A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals originating from ectopic atrial sites. The ectopic signals may or may not conduct to the HEART VENTRICLES. Atrial premature complexes are characterized by premature P waves on ECG which are different in configuration from the P waves generated by the normal pacemaker complex in the SINOATRIAL NODE.
A type of cardiac arrhythmia with premature contractions of the HEART VENTRICLES. It is characterized by the premature QRS complex on ECG that is of abnormal shape and great duration (generally >129 msec). It is the most common form of all cardiac arrhythmias. Premature ventricular complexes have no clinical significance except in concurrence with heart diseases.
An antiarrhythmia agent used primarily for ventricular rhythm disturbances.
Method in which prolonged electrocardiographic recordings are made on a portable tape recorder (Holter-type system) or solid-state device ("real-time" system), while the patient undergoes normal daily activities. It is useful in the diagnosis and management of intermittent cardiac arrhythmias and transient myocardial ischemia.
Any disturbances of the normal rhythmic beating of the heart or MYOCARDIAL CONTRACTION. Cardiac arrhythmias can be classified by the abnormalities in HEART RATE, disorders of electrical impulse generation, or impulse conduction.
Abnormally low potassium concentration in the blood. It may result from potassium loss by renal secretion or by the gastrointestinal route, as by vomiting or diarrhea. It may be manifested clinically by neuromuscular disorders ranging from weakness to paralysis, by electrocardiographic abnormalities (depression of the T wave and elevation of the U wave), by renal disease, and by gastrointestinal disorders. (Dorland, 27th ed)
A generic expression for any tachycardia that originates above the BUNDLE OF HIS.
A group of cardiac arrhythmias in which the cardiac contractions are not initiated at the SINOATRIAL NODE. They include both atrial and ventricular premature beats, and are also known as extra or ectopic heartbeats. Their frequency is increased in heart diseases.
Information systems, usually computer-assisted, designed to store, manipulate, and retrieve information for planning, organizing, directing, and controlling administrative activities associated with the provision and utilization of radiology services and facilities.
A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)
Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.
Agents that prevent clotting.
An anticoagulant that acts by inhibiting the synthesis of vitamin K-dependent coagulation factors. Warfarin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, pulmonary embolism, and atrial fibrillation with embolization. It is also used as an adjunct in the prophylaxis of systemic embolism after myocardial infarction. Warfarin is also used as a rodenticide.
System established by the World Health Organization and the International Committee on Thrombosis and Hemostasis for monitoring and reporting blood coagulation tests. Under this system, results are standardized using the International Sensitivity Index for the particular test reagent/instrument combination used.
Localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. This frequently occurs in conjunction with brain hypoxia (HYPOXIA, BRAIN). Prolonged ischemia is associated with BRAIN INFARCTION.
A condition that is characterized by episodes of fainting (SYNCOPE) and varying degree of ventricular arrhythmia as indicated by the prolonged QT interval. The inherited forms are caused by mutation of genes encoding cardiac ion channel proteins. The two major forms are ROMANO-WARD SYNDROME and JERVELL-LANGE NIELSEN SYNDROME.
Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.
Removal of tissue with electrical current delivered via electrodes positioned at the distal end of a catheter. Energy sources are commonly direct current (DC-shock) or alternating current at radiofrequencies (usually 750 kHz). The technique is used most often to ablate the AV junction and/or accessory pathways in order to interrupt AV conduction and produce AV block in the treatment of various tachyarrhythmias.
Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE).
The chambers of the heart, to which the BLOOD returns from the circulation.
Computer-based systems for use in personnel management in a facility, e.g., distribution of caregivers with relation to patient needs.
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
The hollow, muscular organ that maintains the circulation of the blood.
A plant genus of the family LAMIACEAE that contains phenylpropanoids.
The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
Abnormally rapid heartbeats with sudden onset and cessation.
Use of a balloon catheter for dilation of an occluded artery. It is used in treatment of arterial occlusive diseases, including renal artery stenosis and arterial occlusions in the leg. For the specific technique of BALLOON DILATION in coronary arteries, ANGIOPLASTY, BALLOON, CORONARY is available.
Dilation of an occluded coronary artery (or arteries) by means of a balloon catheter to restore myocardial blood supply.
Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.
Reconstruction or repair of a blood vessel, which includes the widening of a pathological narrowing of an artery or vein by the removal of atheromatous plaque material and/or the endothelial lining as well, or by dilatation (BALLOON ANGIOPLASTY) to compress an ATHEROMA. Except for ENDARTERECTOMY, usually these procedures are performed via catheterization as minimally invasive ENDOVASCULAR PROCEDURES.
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
The veins and arteries of the HEART.
An abnormally rapid ventricular rhythm usually in excess of 150 beats per minute. It is generated within the ventricle below the BUNDLE OF HIS, either as autonomic impulse formation or reentrant impulse conduction. Depending on the etiology, onset of ventricular tachycardia can be paroxysmal (sudden) or nonparoxysmal, its wide QRS complexes can be uniform or polymorphic, and the ventricular beating may be independent of the atrial beating (AV dissociation).
NECROSIS of the MYOCARDIUM caused by an obstruction of the blood supply to the heart (CORONARY CIRCULATION).
Patterns (real or mathematical) which look similar at different scales, for example the network of airways in the lung which shows similar branching patterns at progressively higher magnifications. Natural fractals are self-similar across a finite range of scales while mathematical fractals are the same across an infinite range. Many natural, including biological, structures are fractal (or fractal-like). Fractals are related to "chaos" (see NONLINEAR DYNAMICS) in that chaotic processes can produce fractal structures in nature, and appropriate representations of chaotic processes usually reveal self-similarity over time.
Abnormally rapid heartbeat, usually with a HEART RATE above 100 beats per minute for adults. Tachycardia accompanied by disturbance in the cardiac depolarization (cardiac arrhythmia) is called tachyarrhythmia.
Disorders characterized by hypersomnolence during normal waking hours that may impair cognitive functioning. Subtypes include primary hypersomnia disorders (e.g., IDIOPATHIC HYPERSOMNOLENCE; NARCOLEPSY; and KLEINE-LEVIN SYNDROME) and secondary hypersomnia disorders where excessive somnolence can be attributed to a known cause (e.g., drug affect, MENTAL DISORDERS, and SLEEP APNEA SYNDROME). (From J Neurol Sci 1998 Jan 8;153(2):192-202; Thorpy, Principles and Practice of Sleep Medicine, 2nd ed, p320)
A condition characterized by recurrent episodes of daytime somnolence and lapses in consciousness (microsomnias) that may be associated with automatic behaviors and AMNESIA. CATAPLEXY; SLEEP PARALYSIS, and hypnagogic HALLUCINATIONS frequently accompany narcolepsy. The pathophysiology of this disorder includes sleep-onset rapid eye movement (REM) sleep, which normally follows stage III or IV sleep. (From Neurology 1998 Feb;50(2 Suppl 1):S2-S7)
A readily reversible suspension of sensorimotor interaction with the environment, usually associated with recumbency and immobility.
Simultaneous and continuous monitoring of several parameters during sleep to study normal and abnormal sleep. The study includes monitoring of brain waves, to assess sleep stages, and other physiological variables such as breathing, eye movements, and blood oxygen levels which exhibit a disrupted pattern with sleep disturbances.
The effect of environmental or physiological factors on the driver and driving ability. Included are driving fatigue, and the effect of drugs, disease, and physical disabilities on driving.
The time from the onset of a stimulus until a response is observed.
A state in which there is an enhanced potential for sensitivity and an efficient responsiveness to external stimuli.
A suspension of metallic gold particles.
A family of membrane-associated proteins responsible for the attachment of the cytoskeleton. Erythrocyte-related isoforms of ankyrin attach the SPECTRIN cytoskeleton to a transmembrane protein (ANION EXCHANGE PROTEIN 1, ERYTHROCYTE) in the erythrocyte plasma membrane. Brain-related isoforms of ankyrin also exist.
In the YIN-YANG system of philosophy and medicine, a lack of vital energy (called yangxu in Chinese). It manifests itself in various systemic and organic diseases. (The Pinyin Chinese-English Dictionary, 1979)
Pain in the breast generally classified as cyclical (associated with menstrual periods), or noncyclical, i.e. originating from the breast or nearby muscles or joints, ranging from minor discomfort to severely incapacitating.
A publication issued at stated, more or less regular, intervals.
A plant genus of the family ARACEAE that contains pinellian (an acidic polysaccharide). The plant is an ingredient of some traditional Asian medicinal mixtures including sho-saiko-to, saiko-keishi-to, and banxia houpu decoction.
A quantitative measure of the frequency on average with which articles in a journal have been cited in a given period of time.

Exercise-induced uncommon atrioventricular nodal reentrant tachycardia with sick sinus syndrome: a case report. (1/58)

Exercise seldom provokes tachycardia in patients with paroxysmal supraventricular tachycardia (PSVT). This report presents a case of exercise-induced uncommon atrioventricular nodal reentrant tachycardia (AVNRT) with sick sinus syndrome. Treadmill exercise testing provoked AVNRT of long RP' with good reproducibility. Uncommon AVNRT was confirmed by the lack of atrial pre-excitation during PSVT and para-Hisian pacing. The patient has been successfully treated with verapamil and DDD pacing for 5 years.  (+info)

Initiation of atrial fibrillation by ectopic beats originating from the pulmonary veins: electrophysiological characteristics, pharmacological responses, and effects of radiofrequency ablation. (2/58)

BACKGROUND: Atrial fibrillation (AF) can be initiated by ectopic beats originating from the atrial or great venous tissues. This study investigated the anatomic characteristics and electrophysiological properties of pulmonary veins (PVs), as well as the possible mechanisms and response to drugs of ectopic foci, and assessed the effects of radiofrequency (RF) ablation on AF initiated by ectopic beats originating from PVs. METHODS AND RESULTS: Seventy-nine patients with frequent episodes of paroxysmal AF and 10 control patients were included. Distal PVs showed the shortest effective refractory periods (ERPs), and right superior PVs showed a higher incidence of intra-PV conduction block than left superior PVs. Superior and left PVs had longer myocardial sleeves than inferior and right PVs, respectively. These electrophysiological characteristics were similar between AF and control patients. Propranolol, verapamil, and procainamide suppressed ectopic beats that originated from the PVs. Of 116 ectopic foci that initiated AF, 103 (88.8%) originated from PVs. A mean of 7+/-3 RF applications completely eliminated 110 ectopic foci (94.8%). During the 6+/-2-month follow-up period, 68 patients (86. 1%) were free of AF without any antiarrhythmic drugs. Follow-up transesophageal echocardiogram showed 42.4% of ablated PVs had focal stenosis. One patient had mild exertional dyspnea after ablation, but it resolved 3 months later; 1 patient had onset of mild exertional dyspnea 5 months after ablation. CONCLUSIONS: Electrophysiological characteristics of PVs are different from those in the atria. Ectopic beats from PVs can initiate AF, and beta-adrenergic receptor blocker, calcium channel blockers, and sodium channel blockers can suppress these ectopic beats. Careful mapping and elimination of these ectopic foci can cure paroxysmal AF.  (+info)

Altered complexity and correlation properties of R-R interval dynamics before the spontaneous onset of paroxysmal atrial fibrillation. (3/58)

BACKGROUND: Trigger mechanisms for the onset of paroxysmal atrial fibrillation (AF) in patients without structural heart disease are not well established. New analysis methods of heart rate (HR) variability based on nonlinear system theory may reveal features and abnormalities in R-R interval behavior that are not detectable by traditional analysis methods. The purpose of this study was to reveal possible alterations in the dynamics of R-R intervals before the spontaneous onset of paroxysmal AF. METHODS AND RESULTS: Traditional time and frequency domain HR variability indices, along with the short-term scaling exponent alpha(1) and approximate entropy (ApEn), were analyzed in 20-minute intervals before 92 episodes of spontaneous, paroxysmal AF in 22 patients without structural heart disease. Traditional HR variability measures showed no significant changes before the onset of AF. A progressive decrease occurred both in ApEn (1.09+/-0.26 120 to 100 minutes before AF; 0.88+/-0.24 20 to 0 minutes before AF; P<0.001) and in alpha(1) (1.01+/-0.28 120 to 100 minutes before AF, 0.89+/-0.28 20 to 0 minutes before AF; P<0.05) before the AF episodes. Both ApEn (0. 89+/-0.27 versus 1.02+/-0.30; P<0.05) and alpha(1) (0.91+/-0.28 versus 1.27+/-0.21; P<0.001) were also lower before the onset of AF compared with values obtained from matched healthy control subjects. CONCLUSIONS: A decrease in the complexity of R-R intervals and altered fractal properties in short-term R-R interval dynamics precede the spontaneous onset of AF in patients with no structural heart disease. Further studies are needed to determine the physiological correlates of these new, nonlinear HR variability measures.  (+info)

Cardiac arrhythmias and stroke: increased risk in men with high frequency of atrial ectopic beats. (4/58)

BACKGROUND AND PURPOSE: With the exception of atrial fibrillation (AF), little scientific attention has been given the associations between cardiac arrhythmias and incidence of stroke. We sought to study whether atrial and ventricular arrhythmias assessed during a 24-hour ambulatory ECG registration are associated with incidence of stroke. METHODS: The population-based cohort "Men Born in 1914" was examined with 24-hour ambulatory ECG registrations at 68 years of age. Four hundred two men without previous myocardial infarction or stroke were included, and 236 of them had hypertension (>/=160/95 mm Hg or treatment). Fourteen-year rates of stroke (fatal and nonfatal) and all-cause mortality were updated from national and regional registers. Frequent or complex ventricular arrhythmias was defined as Lown class 2 to 5. A high frequency of atrial ectopic beats (AEB) was defined as the fifth quintile (ie, >/=218 AEB per 24 hours). RESULTS: Fifty-eight men suffered a first stroke during the follow-up. Stroke rates (per 1000 person-years) among men with AF (n=14), with frequent AEB (n=77), and without AF or frequent AEB (n=311) were 34.5, 19.5, and 11.6, respectively. The corresponding values among men with hypertension were 40.7, 32.3, and 14.7, respectively. Frequent AEB (compared with absence of AF and frequent AEB) was significantly associated with stroke among all men (relative risk=1.9; 95% CI, 1.02 to 3.4; P:=0.04) and among hypertensive men (relative risk=2.5; 95% CI, 1.3 to 4.8; P:=0.009) after adjustments for potential confounders. The increased stroke rates among men with Lown class 2 to 5 did not reach statistical significance. CONCLUSIONS: A high frequency of AEB is associated with an increased incidence of stroke.  (+info)

Evaluation of post-repolarization refractoriness for conduction block in cardiac muscle: studies in an artificial isthmus in the canine right atrium. (5/58)

Post-repolarization refractoriness (PRR) is an important factor in determining conduction block and is the difference between the effective refractory period (ERP) and the duration of the monophasic action potential (MAPD). In the present study, conduction block in an artificial isthmus in the canine atrium was evaluated and the coupling interval of a premature beat, which caused the block, was defined as the block coupling interval (BCI). The usefulness of this value was also evaluated. Radiofrequency linear ablation was performed on the right atrial surface parallel to the atrioventricular groove in 5 mongrel dogs, and an artificial isthmus (8-10mm wide and 25-30mm long) was created. Fourteen simultaneous unipolar recordings were performed in the isthmus with a resolution of 1.2 mm. Single extra-stimuli with basic drive train were delivered to induce conduction block in the isthmus and when it occurred, the coupling interval at the recording site just proximal to the site of the block was defined as the BCI. At the site of the block, the ERP and MAPD at each drive cycle length were measured. The PRR was calculated using 2 different formulae: (1) [ERP-MAPD], and (2) [BCI-MAPD]. It was found that each value was shortened in accordance with the shortening of the basic drive cycle length. In all basic drive trains, BCI>ERP>MAPD, and [ERP-MAPD] was always shorter than [BCI-MAPD]. In the shorter cycle length of basic drives, the difference between [ERP-MAPD] and [BCI-MAPD] was more prominent. In the artificial isthmus model in the canine atrium, BCI was always longer than the ERP measured at the same site as the block. Because the ERP may not directly reflect the block phenomenon, the electrophysiologic evaluation should use the BCI instead, as in the PRR evaluation.  (+info)

The class III antiarrhythmic drugs dofetilide and sotalol prevent AF induction by atrial premature complexes at doses that fail to terminate AF. (6/58)

BACKGROUND: Clinical trials suggest that sotalol and dofetilide are much more effective in preventing atrial fibrillation (AF) than in terminating it. This study evaluated potential mechanisms of discordant sotalol and dofetilide effects on AF termination vs. prevention. METHODS: We applied 240-electrode epicardial mapping and programmed stimulation in a vagotonic dog model of AF before and after dofetilide or sotalol. RESULTS: Under control conditions, sustained AF could be induced by single S(2) extrastimuli that caused unidirectional block and macroreentry. Sotalol (2 mg/kg) and dofetilide (0.04 mg/kg) failed to terminate AF in any dog, but prevented AF induction by S(2) stimuli in 19/22 (86%) and 4/5 (80%) of animals, respectively. With sotalol and dofetilide, unidirectional block still occurred, but wavefront reentry failed. The prevention of S(2)-induced reentry was related to large increases in the effective refractory period (ERP) at a BCL of 1000 ms, leading to ERPs that exceeded the conduction delay following S(2). Reverse use-dependent effects resulted in smaller ERP increases at BCLs closer to the AF cycle length. Although the number of zones of reactivation per cycle during sustained AF were decreased by sotalol and dofetilide, the changes were small and insufficient to terminate AF. CONCLUSIONS: Sotalol and dofetilide prevent AF initiation by premature depolarizations at doses that fail to terminate vagotonic AF, by increasing ERP at the basic cycle length beyond the associated conduction delay that leads to reentry.  (+info)

Giant negative T waves during interferon therapy in a patient with chronic hepatitis C. (7/58)

Interferon-alpha (IFN-alpha) has been widely used for treatment of chronic hepatitis C in Japan. In general, cardiovascular adverse reactions are rare in association with IFN-alpha therapy. Here, a 64-year-old man with chronic active hepatitis C complained of fatigue, palpitation and depression, and developed atrial fibrillation with prominent negative T waves during IFN-alpha therapy. Echocardiogram showed septal and apical hypertrophy. Three days after discontinuation of IFN-alpha, subjective symptoms and atrial fibrillation subsided. It is unclear whether or not IFN-alpha induced the giant negative T waves with apical hypertrophy. We might observe the developing course of hepatitis C virus (HCV)-related myocardial hypertrophy by chance. Cardiovascular toxicity should be carefully monitored during IFN-alpha therapy even in patients with minor cardiac disease, such as premature ventricular contracture (PVC) and mild hypertension.  (+info)

Chronic atrial fibrillation in patients with rheumatic heart disease: mapping and radiofrequency ablation of flutter circuits seen at initiation after cardioversion. (8/58)

BACKGROUND: There is little information concerning mapping and radiofrequency ablation (RFA) of arrhythmias seen during reinduction of atrial fibrillation (AF) after pharmacological and/or electrical cardioversion in patients with chronic AF and rheumatic heart disease. METHODS AND RESULTS: Seventeen patients with rheumatic heart disease and symptomatic chronic AF underwent multisite atrial mapping during reinduction of AF after cardioversion. An organized atrial arrhythmia of varying duration was seen to precede the AF in all patients. The earliest atrial activity during this organized rhythm was near the coronary sinus ostium (CS OS) in 14 patients and along the left side of the interatrial septum (IAS) in 3 patients. RFA was performed in 16 patients (14 near the CS OS and 2 along the IAS). Postablation AF was inducible in 1 patient in whom RFA was preformed near the CS OS and in both patients when it was performed along the IAS. At a follow-up of 6 to 56 weeks (mean, 32 weeks), 10 of the 13 patients who had successful ablation were in sinus rhythm. All patients in whom AF was reinducible immediately after RFA continue to be in AF. CONCLUSIONS: Induced AF in patients with rheumatic heart disease begins as a rapid organized arrhythmia with earliest atrial activity near the CS OS in most patients. RFA targeting the region of the CS OS is successful in suppressing the arrhythmia immediately in most of the patients and in most on follow-up.  (+info)

TY - JOUR. T1 - Clinical significance of additional ablation of atrial premature beats after catheter ablation for atrial fibrillation. AU - Kim, In Soo. AU - Yang, Pil Sung. AU - Kim, Tae Hoon. AU - Park, Junbeum. AU - Park, Jin Kyu. AU - Uhm, Jae Sun. AU - Joung, Boyoung. AU - Lee, Moon Hyoung. AU - Pak, Hui Nam. PY - 2016/1. Y1 - 2016/1. N2 - Purpose: The clinical significance of post-procedural atrial premature beats immediately after catheter ablation for atrial fibrillation (AF) has not been clearly determined. We hypothesized that the provocation of immediate recurrence of atrial premature beats (IRAPB) and additional ablation improves the clinical outcome of AF ablation. Materials and Methods: We enrolled 200 patients with AF (76.5% males; 57.4±11.1 years old; 64.3% paroxysmal AF) who underwent catheter ablation. Post-procedure IRAPB was defined as frequent atrial premature beats (≥6/min) under isoproterenol infusion (5 μg/min), monitored for 10 min after internal cardioversion, and ...
Premature atrial contractions (PACs), also known as atrial premature complexes (APC) or atrial premature beats (APB), are a common cardiac dysrhythmia characterized by premature heartbeats originating in the atria. While the sinoatrial node typically regulates the heartbeat during normal sinus rhythm, PACs occur when another region of the atria depolarizes before the sinoatrial node and thus triggers a premature heartbeat.[1] The exact cause of PACs is unclear; while several predisposing conditions exist, PACs commonly occur in healthy young and elderly people. Elderly people that get PACs usually dont need any further attention besides follow ups due to unclear evidence.[2][3] PACs are often completely asymptomatic and may be noted only with Holter monitoring, but occasionally they can be perceived as a skipped beat or a jolt in the chest. In most cases, no treatment other than reassurance is needed for PACs, although medications such as beta blockers can reduce the frequency of symptomatic ...
Premature atrial complexes (PACs) meet increased attention as a potential intermediary between sinus rhythm and atrial fibrillation (AF). Patients with even high numbers of PACs do not fulfill current guidelines for oral anticoagulation treatment though an associated stroke risk is suspected. Objective: We aimed to determine whether a high number of PACs or runs of AF less than 30 seconds in 2-day...
PACs, or premature atrial complexes, are the most common of the heart arrhythmias. In most cases treatment is not needed or recommended.
Online Doctor Chat - Premature atrial complexes (PACs) and premature ventricular complexes (PVCs), Ask a Doctor about diagnosis, treatment and medication for Long qt syndrome, Online doctor patient chat conversation by Dr. Chakravarthy Mazumdar
An atrial premature beat (atrial ectopic beat), is an abnormal extra beat caused due to the stimulation of the atria by a rogue electrical impulse starting from an abnormal site (other than the normal sinoatrial node) prior to a normal heartbeat.
Subjects from the cohort of the Copenhagen Holter Study (n = 671), with no history of manifest cardiovascular (CV) disease or stroke, were studied. All had laboratory tests and 48-h ambulatory electrocardiogram (ECG) recording. The median follow-up was 6.3 years. p-Potassium was inversely associated with frequency of premature ventricular complexes (PVCs) especially in combination with diuretic treatment (r = -0.22, P = 0.015). Hypokalaemia was not associated with supraventricular arrhythmias. Subjects at lowest quintile of p-potassium (mean 3.42, range 2.7-3.6 mmol/L) were defined as hypokalaemic. Cardiovascular mortality was higher in the hypokalaemic group (hazard ratio and 95% confidence intervals: 2.62 (1.11-6.18) after relevant adjustments). Hypokalaemia in combination with excessive PVC worsened the prognosis synergistically; event rates: 83 per 1000 patient-year in subjects with both abnormalities, 10 and 15 per 1000 patient-year in those with one abnormality, and 3 per 1000 ...
Blocked premature atrial contractions (BPACs) are considered a type cardiac bradyarrhythmia and if occurring in utero is classified under a fetal bradyarrhythmia. Pathology It is seen when a premature atrial contraction occurs very early on and...
Premature atrial contraction is an early beat of the hearts upper chamber (atrium). It may feel like the heart skipped a beat. (See also palpitations.) ...
After any PVC there is a pause that can lead to the development of bigeminy. A PVC wavefront often encounters a refractory AV node that does not conduct the wavefront retrograde. Thus the atrium is not depolarized and the sinus node is not reset. Since the sinus p wave to PVC interval is less than the normal P-P interval, the interval between the PVC and the next p wave is prolonged to equal the normal time elapsed during two P-P intervals. This is called a compensatory pause. The pause after the PVC leads to a longer recovery time, which is associated with a higher likelihood of myocardium being in different stages of repolarization. This then allows for re-entrant circuits and sets up the ventricle for another PVC after the next sinus beat.[2] The constant interval between the sinus beat and PVC suggests a reentrant etiology rather than spontaneous automaticity of the ventricle.[3] Atrial premature complexes (APCs) do not have a compensatory pause since they reset the sinus node but atrial ...
Background-Premature atrial contractions (PACs) are independent predictors of atrial fibrillation, stroke and death. However, little is known about PAC frequency in the general population and its association with other cardiovascular risk factors. Methods and Results-We performed a cross-sectional analysis among participants of the population-based Swiss cohort Study on Air Pollution and Lung Diseases in Adults (SAPALDIA). 24-hour Holter electrocardiograms to assess PAC prevalence and frequency were performed in a random sample of 1742 participants aged ≥50 years. The median (interquartile range) number of PACs per hour was 0.8 (0.4-1.8), 1.1 (0.5-2.4), 1.4 (0.7-4.6), 2.3 (0.8-6.9) and 2.6 (1.2-6.5) among participants aged 50-55, 55-60, 60-65, 65-70 and 70+ years, respectively (p,0.0001). Only 18 (1.0%) participants did not have at least 1 PAC during Holter monitoring. In multivariable negative binomial regression models, PAC frequency was significantly associated with age (Risk ratio (RR) per ...
However, that just tests the amount in the blood stream, and I was fasting before going in for the physical, no losartan potassium, no potassium salt and no bananas to load potassium into my blood stream - but THAT DOESNT MEAN THAT HIGH LEVELS OF POTASSIUM HADNT BUILT UP IN THE OTHER CELLS OF THE BODY, as I had read an internet article which pointed out. So bottom line, I bought an EMAY portable ecg monitor ($99 on amazon, great little machine!) and read up a little on how to read an ecg graph, and learned that a high and pointed (rather than rounded) T-wave, usually indicates hyperkalemia, or too much potassium!! So I stopped eating bananas altogether to bring my potassium level down, and within a day or two the majority of my ecg readings were normal, whereas before 30-50% showed arrhythmia.. Also previously my readings before tended to show quite a few bradycardia readings (heart rate below 60), and after reducing my potassium intake, now Im seeing fewer bradycardia readings. I believe ...
Initiation of AF. Atrial Ectopic Beat. Atrial Ectopic Beat. AF. Sinus. . . . . . . . . . . . . Pulmonary vein ectopic. AF initiation from pulmonary vein ectopic. AF maintenanceby atrial remodelling. Atrial Fibrillation. . . Fast AF Slideshow 156078 by issac
Posted By Gina on June 28, 1999 at 10:30:51 Was just diagnoised with premature atrial contrations. I am a 30 year old female with a long 1st degree A/V block and a prosetic mitral valve. These prematu...
Cough is a clinical situation which is experienced by almost every people in the world. It is usually a benign condition representing a self limiting reflex of our body. ..
(HealthDay)-For patients with atrial fibrillation (AF) with two or more failed pulmonary vein isolation (PVI) procedures, ablating non-PV triggers is associated with improved outcomes, according to a study published online ...
While the etiological underpinnings of inflammatory bowel disease (IBD) are highly complex, it has been noted that both clinical and pathophysiological similarities exist between IBD and both asthma and non-pulmonary allergic phenomena. In this review, several key points on common biomarkers, pathop …
A 65-year-old man with symptomatic atrial fibrillation refractory to medical therapy was referred for repeat pulmonary vein (PV) isolation. Clinical symptoms included paroxysmal palpitations once to twice per week with associated light-headedness and chest pain. Initial PV isolation had been performed 6 months earlier without cessation of atrial fibrillation despite combined medical therapy with oral flecainide and bisoprolol. His past medical history was significant for hypertension, and in his family history, 1 brother had experienced a stroke at the age of 57 years. Physical examination, ECG, chest radiography, and coronary angiography were normal. Holter 24-hour ECG recordings revealed occasional atrial premature beats and paroxysmal atrial tachycardia.. A magnetic resonance imaging study of the patients PVs and left atrium (LA) was performed before the repeat radiofrequency ablation. Images were acquired with a 1.5-T whole-body magnetic resonance system (Siemens Avanti, Siemens Medical ...
Heart arrhythmia, also known as cardiac dysrhythmia or irregular heartbeat, is a group of conditions in which the heartbeat is irregular, too fast, or too slow.[2] A heart rate that is too fast - above 100 beats per minute in adults - is called tachycardia and a heart rate that is too slow - below 60 beats per minute - is called bradycardia.[2] Many types of arrhythmia have no symptoms.[1] When symptoms are present these may include palpitations or feeling a pause between heartbeats.[1] More seriously there may be lightheadedness, passing out, shortness of breath, or chest pain.[1] While most types of arrhythmia are not serious, some predispose a person to complications such as stroke or heart failure.[2][3] Others may result in cardiac arrest.[3]. There are four main types of arrhythmia: extra beats, supraventricular tachycardias, ventricular arrhythmias, and bradyarrhythmias.[3] Extra beats include premature atrial contractions, premature ventricular contractions, and premature junctional ...
Introduction. TLC5000 Dynamic ECG System adapts international standard 12-lead system, can record continuously ECG waves for 24h, and analyses waves with PC software. It is applicable in hospital and community medical establishment.. Main Features. Quick and accurate analysis system.. The 12-leads synchro analysis , to find accurate,QRS search can be accurate and no distortion.. There are more than 10 templates as atrial premature beat module, ventricular premature beat module, long interval module, atrial flutter module, atrial fibrillation module etc. and multiplicate User-defined templates could almost identify every kind of pathologic waveforms.. Flexible analysis channel selection function,can choose any channel as the mainly analysis the channel.. Flexible atrial fibrillation analysis ,so that physicians can use full,segmented automatic manual analysis of atrial fibrillation,make the analysis more quickly and accurately.. Powerful pacemaker analysis,on the AAI,VVI,DDD etc. all pacemaker ...
Today, I saw my doctor. And today, I am ready to contact every media outlet and investigative reporter I can find, as someone in the higher levels of management IS TRYING TO KILL ME.. I have been a patient of the Community Health Network since 2013 and have had related services through Community Health several years prior to that. I have been deemed medically fragile by the state of Indiana and suffer from several illness and medical problems.. And I am a LOWLY HIP Plan Plus member via Indiana Medicaid.. I have Fibromyalgia, small fiber neuropathy, peripheral neuropathy, irritable bowel syndrome, paroxysmal atrial tachycardia, premature atrial contractions, anxiety (free-floating and IBS related), severe hand eczema, osteopenia, pelvic organ prolapse and Ehler-Danlos Syndrome type H.. My illnesses are extremely painful and I do everything I can to work with my healthcare provider to achieve some sort of quality of life. I exercise, eat well, drink water, use Epsom soaks and muscle rubs and use a ...
Baby boy has a consistently irregular heartbeat (fairly common). His heart rhythm is called premature atrial contraction. Basically, his atria (the top chambers in the heart which fill with blood) are contracting early and try to dump the blood into the ventricles (the lower chambers that do the pumping to the rest of the body). There is some irritability in the conduction system of the atria and the doctor can hear a pause as the conduction resets the beat. While it is occurring regularly, it is irregular overall ...
Arterial blood gas determination defines the events in infants breast fed by mothers edinburgh search viagra viagra find free who are unable to take med-ication orally, these medications and indications for cardiac resynchronization to treat delirium could worsen the long-term outcome. Risk assessment determines a specific nutrient that supports this diagnosis in dysmorphic infants who have never been subjected to freezing temperatures. In the bedridden patient, hypoventilation results in impaction of the res-piratory system to be individual-ized to minimize dynamic hyper- inflation by maximizing inspiratory flow pattern may be given. Ann surg. Q mismatching and right-to-left shunting through the mucus and heavily con-centrated sweat are produced. A palpable spleen or marrow suppression diarrhea examples some common or in other locations. Cchb is associated with, epiphyseal fractures are most commonly associated with premature atrial contractions and less often the result of low osmolality to ...
Ventricular premature complexes (VPCs) are ectopic impulses originating from an area distal to the His Purkinje system. VPCs are the most common ventricular arrhythmia.
Looking for atrioventricular extrasystole? Find out information about atrioventricular extrasystole. Premature beat of the heart. the most common form of arrhythmia. The condition is characterized by irregular heart contractions caused by impulses from an... Explanation of atrioventricular extrasystole
Rhythm Disturbances. Impulses originating from outside the sinus node are abnormal and create an arrhythmia (dysrhythmia). Abnormal or ectopic impulses are described based on their site of origin (atrial, junctional, supraventricular, ventricular). They are also characterized by timing, that is, whether they occur earlier than the next expected sinus impulse (premature) or whether they occur late (escape), as a rescue mechanism. Abnormal premature impulses (complexes) may occur singly or in multiples. Groups of three or more comprise an episode of tachycardia; bouts of tachycardia may be brief (paroxysmal tachycardia) or quite prolonged (sustained tachycardia). A bigeminal pattern occurs when each normal QRS is followed by a premature complex; the origin of the premature complexes determines whether the rhythm is atrial or ventricular bigeminy.. Supraventricular (atrial, junctional) premature complexes originate above the AV node, in either the atrium or the AV junctional area (near the AV ...
Rhythm Disturbances. Impulses originating from outside the sinus node are abnormal and create an arrhythmia (dysrhythmia). Abnormal or ectopic impulses are described based on their site of origin (atrial, junctional, supraventricular, ventricular). They are also characterized by timing, that is, whether they occur earlier than the next expected sinus impulse (premature) or whether they occur late (escape), as a rescue mechanism. Abnormal premature impulses (complexes) may occur singly or in multiples. Groups of three or more comprise an episode of tachycardia; bouts of tachycardia may be brief (paroxysmal tachycardia) or quite prolonged (sustained tachycardia). A bigeminal pattern occurs when each normal QRS is followed by a premature complex; the origin of the premature complexes determines whether the rhythm is atrial or ventricular bigeminy.. Supraventricular (atrial, junctional) premature complexes originate above the AV node, in either the atrium or the AV junctional area (near the AV ...
Our site provides detailed information about the causes of extrasystole such as stresses, myocarditis, etc. Also here you can find the list of extrasystole symptoms
Explore our site and find all the information you needed about how to detect extrasystole as well as the tests and procedures used to diagnose extrasystole
Electrocardiocardiograms can be difficult to tackle and I know that this is a topic that I repeatedly visit, both for simple things like delineating PVCs (premature ventricular contractions) from PACs (premature atrial contractions) and denoting what defines a second degree type 1 versus a second degree type 2 heart block. But theres so much more than just that - theres right and left bundle branch blocks, right and left ventricular hypertrophy, ischemia, infarction, axis deviation, atrial hypertrophy, etc. While this is a very limited approach to EKGs and while there is still much to learn about them, this is a great introduction to EKGs for any student, whether you are pre-med, pre-PA, pre-NP, pre-nursing, or pre any other health profession. At the end of the review are a few helpful questions provided by TrueLearn you can use after youve studied the review, which offer you some insight into the type of questions and degree of exam preparation offered. I hope that you find them as useful as ...
The clinical manifestations of ALS appear to start at a focal body region and then spread to other regions over time.18-22 The focality of clinical onset is an important issue to discuss because there must be an onset mechanism different from progression pathology, whether or not cell to cell propagation underlies the progression of ALS. At the clinical onset, almost equal proportions of patients have bulbar region, upper limb or lower limb symptoms,19 20 with bulbar cases slightly less frequent (21-25% of all patients).18 21 22 Respiratory symptoms rarely occur first. Thus it seems that the disease can begin stochastically at any region. However, in patients with unilateral upper limb onset, a different frequency of onset between the right and left sides has been reported. Ravits et al19 reported that 34 of 100 ALS patients had onset in the upper limbs: 24 (70.6%) in the right and 10 (29.4%) in the left limb. In 53 ALS patients with unilateral upper limb onset reported by Körner et al,20 onset ...
A retrospective chart review of 86 adult patients with ALI found that patients with ALI who also received high dose nebulized salbutamol (2.5-6.4 mg/day) had significantly more days alive and free of ALI (n = 22, 12.2 [4.4] days) compared with the group receiving ≤ 2.4 mg/day (n = 64, 7.6 [1.9] days). There were no differences in non-pulmonary organ failure or hospital mortality rates (48% vs 50%) [26]. After adjustment for differences in case mix between the groups, high dose salbutamol remained independently associated with the number of days alive and free of ALI in a multivariate model.. The β-agonist Lung Injury Trial (BALTI-1) [27] was a phase II prospective randomized, double blind, placebo-controlled and the first study in humans to evaluate the effect of β-agonists on lung water. This single center study randomized 40 adult patients with ARDS to an intra-venous infusion of salbutamol 15 μg/kg/hr for 7 days and serially recorded the effect on extravascular lung water (EVLW). The ...
[Effects of the combination of nitrogen baths and physical training on physical performance and extrasystole in patients with coronary heart disease with intraventricular blocks]. - S V Klemenkov, A N Razumov, A M Iavisia, O B Davydova
Automaticity refers to a cardiac muscle cell firing off an impulse on its own. All of the cells in the heart have the ability to initiate an action potential; however, only some of these cells are designed to routinely trigger heart beats. These cells are found in the conduction system of the heart and include the SA node, AV node, Bundle of His and Purkinje fibers. The sinoatrial node is a single specialized location in the atrium that has a higher automaticity (a faster pacemaker) than the rest of the heart and, therefore, is usually responsible for setting the heart rate and initiating each heart beat. Any part of the heart that initiates an impulse without waiting for the sinoatrial node is called an ectopic focus and is, by definition, a pathological phenomenon. This may cause a single premature beat now and then, or, if the ectopic focus fires more often than the sinoatrial node, it can produce a sustained abnormal rhythm. Rhythms produced by an ectopic focus in the atria, or by the ...
east york, prijsvragen babyfoon levitra on m6g 0a1; canada: 790-593-2682. In such cases, banding of the long bones with relatively good size, and the eyes are open rather than a certain ventricular premature complexes. The left atrial emptying (figure7. Ultrasound obstet gynecol 1996;7:32532. The clinical staging system used in this frame. 53. Norell ms, lyons jp, gardener je, etal. Marked asymmetry is usually not sexually active girl with sickle cell disease. A slightly earlier pacing stimulus (6ms earlier) leads to vasodilatation and extensive ana- tomical and functional closure usu- ally the left ventricle flows through the fora- men ovale. 5. When dtb is expected in the chapter. This method has major limi- tations, however. Have the child is too high or low oxygen saturations (in circles) are shown from the descending aorta 19 23 27 35 30 15 30 fetalheartrate(bpm) 35 50 50 60 60 20. (ao, aorta; pa, pulmonary artery; sp, spine; st, sternum; t, thymus. 44,15,77,58 fgfs are also invested in ...
Instability in ventricular repolarization in the presence of premature activations (PA) plays an important role in arrhythmogenesis. However, such instability cannot be detected clinically. This study developed a methodology for detecting QT interval
MacDonald, Thomas Conchar (1940) Some Aspects of Carbon Monoxide Asphyxia. MD thesis, University of Glasgow. [Open Access] MacKay, Morag D (1940) The Land Utilization of Renfrewshire. PhD thesis, University of Glasgow. [Open Access] McArthur, William (1940) An Inquiry into the Extent and Nature of Ben Jonsons Familiar Knowledge of Classical Latin Authors, and the Reflection and Influence of That Knowledge on His Work and Character. PhD thesis, University of Glasgow. [Open Access] McCracken, David Andrew (1940) Some Public Health Problems of War Evacuation in the County of Northampton. MD thesis, University of Glasgow. [Open Access] McLaren, Hugh Cameron (1940) The Menopause. MD thesis, University of Glasgow. [Open Access] McMillan, Robert Bingham (1940) The Secondary Infection of Sinuses Occurring in Cases of Non-Pulmonary Tuberculosis. MD thesis, University of Glasgow. [Open Access] Meiklejohn, John (1940) The Application of Musical Tests to the Study of Individual Reactions to Music: Studies ...
Introduction. Neonatal tachycardia is defined as a resting heart rate (HR) of 182 beats per minute (bpm) when the baby is not crying.1,2 Supraventricular tachycardia (SVT) is the most common tachyarrhythmia in the neonatal period and usually presents with a HR of more than 200bpm and with a narrow QRS complex. In 80% of patients, it originates through a mechanism of retrograde conduction via an accessory pathway between the ventricle and the atrium, with an abrupt onset and termination. In 15% of patients it results from atrial ectopic beats, while 5% of cases correspond to re-entrant nodal tachycardias.3,4 Approximately half of these patients present with heart failure, with suspicion of sepsis in some cases. The tachycardia may be detected in the foetal period, most frequently between weeks 28 and 33 of gestation, possibly manifesting with hydrops.5. The key element in the management of haemodynamically unstable patients with tachycardia is electric cardioversion. However, in stable patients, ...
Objective: We compared the usefulness of tuberculin skin test (TST) and three interferon-gamma release assays (IGRAs) (QuantiFERON-TB Gold (QFT-2G), QuantiFERON-TB Gold In-tube (QFT-3G), T-SPOT.TB) as the supportive method of diagnosing pulmonary tuberculosis (TB).. Methods: The subjects were 70 patients who required the differentiation of pulmonary TB clinically. The final clinical diagnosis of pulmonary TB in 22 patients and non-pulmonary TB disease in 48 patients was established by clinical specimens.. Results: In 22 patients with pulmonary TB, the positive response rate was 60% on TST, 80% on QFT-2G, 85% on QFT-3G and 95% on T-SPOT.TB. In 48 patients with non-pulmonary TB disease, the positive response rate was 47% on TST, 9% on QFT-2G, 9% on QFT-3G, 13% on T-SPOT.TB. Indeterminate results on three IGRAs were recognized in one patient each on QFT-2G and QFT-3G among patients with pulmonary TB in three patients on QFT-2G and two patients on QFT-3G among patients with non-pulmonary TB disease. ...
Heart block, or atrioventricular (AV) block, is either complete or incomplete. The term third-degree AV block, or complete heart block, is applied when there is no relationship between the atrial and ventricular beats and the atrial rate is faster than the ventricular. Incomplete AV block is divided into first-degree, second-degree, and advanced AV block. By definition, first-degree AV block occurs when the PR interval is 0.20 seconds and each atrial beat is followed by a ventricular complex. Second-degree AV block results in intermittent failure of atrial impulses to be conducted to the ventricles and is divided into two basic types: Type I or Wenckebach (also called Mobitz I) shows progressive lengthening of the PR interval from beat to beat until an atrial complex is blocked. Because of these periodic pauses, âœgrouped beatingâ occurs and, when present, aids in the diagnosis of Mobitz I block. It may be seen transiently in acute inferior wall myocardial infarction. Type II AV block ...
OBJECTIVE: Based on the theoretical basis of Gabor wavelet transformation, the application effects of feature extraction algorithm in Magnetic Resonance Imaging (MRI) and the role of feature extraction algorithm in the diagnosis of lumbar vertebra degenerative diseases were explored. METHOD: The structure of lumbar vertebra and degenerative changes were respectively introduced to clarify the onset mechanism and pathological changes of lumbar vertebra degenerative changes. Most importantly, the theoretical basis of Gabor wavelet transformation and the extraction effect of feature information in lumbar vertebra MRI images were introduced. The differentiation effects of feature information extraction algorithm on annulus fibrosus and nucleus pulposus were analyzed. In this study, the data of lumbar spine MRI was randomly selected from the Wenzhou Lumbar Spine Research Database as research objects. A total of 130 discs were successfully fitted, and 109 images were graded by a doctor after ...
Duchenne muscular dystrophy (DMD) is a severe and fatal muscle wasting disease characterized by a high mutation rate in the gene that encodes the membrane-associated protein dystrophin that results in absence of expressed protein. Although the primary genetic defect for DMD is known, the mechanisms that initiate the onset of DMD are not currently understood. This study tested the hypothesis that pathophysiological processes involved in DMD could be identified by the global expression of mRNA in maturing dystrophin- and utrophin-deficient mouse (mdx:utrn-/-) muscles. Two potential dystrophic onset mechanisms targeted for analysis were (1) disrupted expression of calcium handling proteins; and, (2) increased expression of immune response markers. An mRNA expression profile was developed following isolation of total RNA from control and mdx:utrn-/- triceps surae (TS) muscles at ages 9-10 and 20-21 days using Affymetrix® Mu74Av2 GeneChips®. Compared to control, the mRNA expression profile in ...
ABSTRACT: Alzheimer's disease (AD) is the most common cause of senile dementia worldwide. AD is a neurodegenerative disorder characterized by the loss of memory and language skill, collapse of the cognitive function, and distortion of social behavior. As of today, the onset mechanisms of AD and cure are unknown; however, three hallmarks are commonly encountered: extra and intracellular accumulation of amyloid beta (Abeta) peptide plaques, formation of intracellular neurofibrillary tangles, and inevitable neuronal death. Hypothetically, a possible scenario provoking or involved in the onset of AD is a cascade effect that starts with an imbalance in the production and clearance of Abeta peptide that consequently leads to its accumulation, formation of tau protein tangles and neuronal death. This work studied and characterized the mechanisms governing Abeta peptide aggregation and the effects of using anti-Abeta monoclonal antibodies to modify this process. These mechanisms play an important ...
Prognostic Role of Ventricular Ectopic Beats in Systemic Sclerosis: A Prospective Cohort Study Shows ECG Indexes Predicting the Worse Outcome. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
99mTcMAA nuclear medicine scintigraphy scans may conclusively document the presence of right-to-left shunt. These scans employ a radioactive tracer attached to albumin particles, which range in size from 10-40 microns in diameter. Normally, particles of this size, when injected intravenously, embolize the precapillary pulmonary arterioles and do not pass into the systemic circulation. However, in patients with HPS, the 99mTc-MAA particles may pass directly through the dilated vessels to embolize systemic organs, such as the brain, spleen, or kidney. Such systemic tracer embolization is characteristic of right-to-left shunting, but can be seen with cardiac or extracardiac shunts. Therefore, exclusion of non-pulmonary causes of right-to-left shunting is required to firmly establish the diagnosis of HPS. ...
Dr Sanjay Gupta is a leading consultant cardiologist who specialises in all heart related problems including heart palpitations, ectopic beats & flutters.
i have had 2 holter monitors a chest xray bloods a ecg and heart scan last yr all normalbut showed ectopic beats just lately i have been sooooooooooooooooo breathless not just with anxiety but ALL the time, i feel like its tight around my stomach and i cant get any air in, ive felt like this 3 weeks now i have had bloods done all normal my BP is normal i had another c xray and ecg and am awaiting the results i dont understand what could be causeing this its effecting my everyday life the dr cant find anything wrong im so scared of dying and leaving my boy without a mummy ...
Analysis of Holter Recordings In all three observation periods (baseline and at every 8 and 12 h) the Holter PVC rates used to determine efficacy of the
These recommendations document of the ESC Study Group on Sports Cardiology specifically address supraventricular arrhythmias but also give guidelines for those performing recreational sports. For different supraventricular arrhythmias and arrhythmogenic conditions, a description of the relationship between the condition and physical activity is given, stressing how arrhythmias can be influenced by exertion or can be a reflection of the (patho)physiological cardiac adaptation to sports participation itself. The following topics are covered: sinus bradycardia; atrioventricular nodal conduction disturbances; pacemakers; atrial premature beats; paroxysmal supraventricular tachycardia without pre-excitation; pre-excitation, asymptomatic or with associated arrhythmias (i.e. Wolff-Parkinson-White syndrome); atrial fibrillation; and atrial flutter. A related document discusses ventricular arrhythmias, channelopathies and implantable cardioverter defibrillators ...
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Supraventricular arrhythmias, other than atrial fibrillation or flutter, are relatively uncommon in the periinfarction period. Their occurrence often indicates myocardial dysfunction and they may, by themselves, cause congestive heart failure or exac
Background: To explore the conditions most dangerous for the emergence of sustained Ventricular Tachycardia or Ventricular Fibrillation (VT/VF) a new computational model ..
Moak, J.P., Mercader, M.A., He, D., Trachiotis, G., Langert, J., Blicharz, A., Montaque, E., Li, X., Cheng, Y.I., McCarter, R., Bornzin, G.A., Martin, G.R., Jonas, R.A. (2013). Nonpharmacologic control of postoperative supraventricular arrhythmias using AV nodal fat pad stimulation in a young animal open heart surgical model. Circulation - Arrythmia and Electrophysiology, 6(3), 641-647.. ...
XDA member martino2k6 has provided Android users with a very easy tool to modify the font of their Android devices. Font Changer does exactly what its name suggests, it easily allows anyone to change the stock font of the device to anything that they want. The app is nowhere near as much of a hassle as what changing the fonts actually is. Simply drop the fonts in the applications folder, wait for the app to recognize it, and boom! You got another font to choose from when customizing your device. The process is pretty much automated but it has a few requirements such as root and busybox.. If you would like to try it out, make sure that you leave some feedback for the dev.. You can find more information in the application thread.. Want something published in the Portal? Contact any News Writer.. ...
... an endoscopic technique for controlling hemorrhage Atrial premature complexes, a type of premature heart beat or irregular ... a powerful oxidizer used in solid rocket motors Anaphase-promoting complex, a complex of several proteins activated during ... mutations in which can cause colon cancer Anaphase-promoting complex, a ubiquitin ligase cell cycle protein Antigen-presenting ...
The other rare E.C.G. changes include deformity of QRS complexes, prolongation of PR interval, atrial premature beats, and ... atrial tachycardia. In adults, fatal cases have been reported with a total dose of 0.6 G. or less. The incidence of toxic heart ...
Atrial premature complexes (APCs) do not have a compensatory pause since they reset the sinus node but atrial or ... In atrial bigeminy, the other "twin" is a premature atrial contraction (PAC). ... When the atrial rhythm is irregular (as in atrial fibrillation or sinus arrythmia) the presence of bigeminy depends on the ... The two beats are figuratively similar to two twins (hence bi- + gemini). The ectopic beat is typically a premature ventricular ...
... not preceded by any atrial complex or P wave or preceded by an abnormal P wave with a shorter PR interval. Rarely, the abnormal ... Premature atrial contraction Premature ventricular contraction Tipton MJ, Kelleher PC, Golden FS Institute of Naval Medicine, ... On the surface ECG, premature junctional contractions will appear as a normally shaped ventricular complex or QRS complex, ... Premature junctional contractions (PJCs), also called atrioventricular junctional premature complexes or junctional ...
It is more often misinterpreted as a premature ventricular complex. It is named for Richard Ashman (of New Orleans) (1890 -1969 ... Harrigan, RA; Garg, M (Dec 2013). "An interesting cause of wide complex tachycardia: Ashman's phenomenon in atrial fibrillation ... Ashman beats are described as wide complex QRS complexes that follow a short R-R interval preceded by a long R-R interval. This ... Oreto, G; Luzza, F; Satullo, G; Donato, A; Carbone, V; Calabrò, MP (Sep 2009). "[Wide QRS complex tachycardia: an old and new ...
... s (PACs), also known as atrial premature complexes (APC) or atrial premature beats (APB), are a ... This can be either a premature atrial contraction or a premature impulse from the atrioventricular node. SVES should be viewed ... Often, hypertension goes hand in hand with various atrial fibrillations including premature atrial contractions (PACs).[5] ... narrow QRS complex. However, if the atrial beat is premature enough, it may reach the atrioventricular node during its ...
Initiation of AVRT may be through a premature impulse of atrial, junctional, or ventricular origin. Acute management is as for ... would appear as a narrow-complex SVT. Between episodes of tachycardia the affected person is likely to be asymptomatic; however ... Then, the electrical impulse pathologically passes back into the atria via the accessory pathway, causing atrial contraction, ...
Procainamide can be used to treat atrial fibrillation in the setting of Wolff-Parkinson-White syndrome, and to treat wide ... Class Ib agents are indicated for the treatment of ventricular tachycardia and symptomatic premature ventricular beats, and ... complex hemodynamically stable tachycardias. Oral procainamide is no longer being manufactured in the US, but intravenous ... While procainamide and quinidine may be used in the conversion of atrial fibrillation to normal sinus rhythm, they should only ...
Atrial repolarization occurs and is masked during the QRS complex by ventricular depolarization on the ECG. The last event of ... This prevents premature relaxation, maintaining initial contraction until the entire myocardium has had time to depolarize and ... The delay in the AV node forms much of the PR segment on the ECG, and part of atrial repolarization can be represented by the ... The spread of electrical activity through the ventricular myocardium produces the QRS complex on the ECG. ...
... atrial fibrillation, atrial flutter, and paroxysmal supraventricular tachycardia). An AV-junctional rhythm, or atrioventricular ... Impulses originating within or below the bundle of His in the AV node will produce a wide QRS complex with heart rates between ... For infants, bradycardia is defined as a heart rate less than 100 BPM (normal is around 120-160 BPM) . Premature babies are ... Those above the bundle of His, also known as junctional, will typically range between 40 and 60 BPM with a narrow QRS complex. ...
Premature infants with immature brains and reflex systems are at high risk for central sleep apnea syndrome, even if these ... CSA with Cheyne-Stokes breathing is characterized by at least one of the criteria of Primary CSA or the presence of atrial ... located in the region of the human brain known as the pre-Botzinger complex, are imbalanced during sleep and fail to give the ... Premature babies who have the syndrome will generally outgrow it as they mature, provided that they receive careful enough ...
Atrial flutter Premature atrial rhythm (or tachycardia) Third degree heart block Ventricular ectopics Ventricular tachycardia ... The exact physiologic mechanism of jugular venous distention with a positive test is much more complex and the commonly ... The peak of the 'a' wave demarcates the end of atrial systole. The x descent follows the 'a' wave and corresponds to atrial ... The absence of 'a' waves may be seen in atrial fibrillation. An elevated JVP is the classic sign of venous hypertension (e.g. ...
According to the Centers for Disease Control and Prevention (CDC), most birth defects are believed to be caused by a complex ... Rubella can also lead to atrial and ventricular septal defects in the heart. If exposed to rubella in the second trimester, the ... Exposure during the first eight weeks of development can also lead to premature birth and fetal death. These numbers are ... Around a 5% increase in the incidence of ventricular septal defects, atrial septal defects, and patent ductus arteriosus in ...
According to the CDC, most birth defects are believed to be caused by a complex mix of factors including genetics, environment ... Rubella can also lead to atrial and ventricular septal defects in the heart. If exposed to rubella in the second trimester, the ... pre-mature births, and stillbirth. These complications not only may put the child at risk, but also the mother.[74] ... Around a 5% increase in the incidence of ventricular septal defects, atrial septal defects, and patent ductus arteriosus in ...
Atrial fibrillation and atrial flutter without rapid ventricular response. *Premature atrial contraction (PACs) and premature ... For example, an "irregularly irregular" QRS complex without P waves is the hallmark of atrial fibrillation; however, other ... QRS complex The QRS complex represents the rapid depolarization of the right and left ventricles. The ventricles have a large ... Absent P waves with "irregularly irregular" QRS complexes is the hallmark of atrial fibrillation ...
Atrial Fibrillation Chapter 247: Approach to Ventricular Arrhythmias Chapter 248: Premature Ventricular Beats, Non-Sustained ... The Major Histocompatibility Complex Chapter 344: Primary Immune Deficiency Diseases Section 2: Disorders of Immune-Mediated ... Focal Atrial Tachycardia Chapter 244: Paroxysmal Supraventricular Tachycardias Chapter 245: Common Atrial Flutter, ... Atrial Myxoma and Other Cardiac Tumors Section 5: Coronary and Peripheral Vascular Disease Chapter 267: Ischemic Heart Disease ...
PRDM14 is a pluripotency regulator and MED24 is a mediator complex essential in the maintenance of pluripotency. In wild-type ... Variants identified included a premature stop variant in exon 3, frame-shift variants in exon 3 and a frameshift variant in ... Congenital defects such as a thinned atrial septum, ventricular septal defects, patent ductus arteriosus, dysplastic kidney and ... Mutations in the SON gene and or SON haploinsufficiency compromises SON-mediated RNA splicing and contributes to the complex ...
An ectopic pacemaker located in the atria is known as an atrial pacemaker and can cause the atrial contraction to be faster.[10 ... When an ectopic pacemaker initiates a beat, premature contraction occurs. A premature contraction will not follow the normal ... However the QRS complex and T waves appear relatively normal.[10] Conversely, during junctional ectopic activity the P wave is ... frequently absent or can be hidden in the QRS complex.[11] References[edit]. *^ a b c d Phibbs, B. (1963). "Paroxysmal Atrial ...
Sinus bradycardia Premature atrial contractions (PACs) Wandering atrial pacemaker Atrial tachycardia Multifocal atrial ... Long QT syndrome is another complex problem in the heart and has been labeled as an independent factor in mortality. There are ... Extra beats include premature atrial contractions, premature ventricular contractions and premature junctional contractions. ... These are mainly the result of premature atrial contractions, usually give no symptoms, and have little consequence. However, ...
However, those with CPVT may develop a less serious heart rhythm disturbance called atrial fibrillation, which can be detected ... When the concentration of calcium is low, calsequestrin monomers form a complex with the proteins triadin and junctin, which ... Afterdepolarisations, if large enough, can trigger additional action potentials, premature ventricular contractions, or ... calsequestrin forms polymers that dissociate from the ryanodine receptor channel complex, removing the inhibitory response and ...
They may also develop a left atrial thrombus that embolizes, most commonly, to the terminal aorta creating acute pain and rear ... In individuals with aortic stenosis, after a premature ventricular contraction (PVC), the following ventricular contraction ... this method of screening is complex and is not cost-effective. Therefore, genetic testing in the United States is limited to ... family history of premature sudden death, and LVW thickness greater than 15 mm to 30 mm, on echocardiogram. "Spike and dome" ...
Atrial fibrillation Electric shock Flatline Osborn wave Re-entry ventricular arrhythmia Ventricular flutter Baldzizhar, A; ... Diagnosis is by an electrocardiogram (ECG) showing irregular unformed QRS complexes without any clear P waves. An important ... who brought to attention the concept of the danger of premature ventricular beats occurring on a T wave.[citation needed] ... a term that he seems to have used to describe both atrial and ventricular fibrillation. John A. MacWilliam, a physiologist who ...
The QRS complex will also be narrow in LGL syndrome, as opposed to WPW, because ventricular conduction is via the His-Purkinje ... Premature contraction. *Atrial. *Junctional. *Ventricular. Pre-excitation syndrome. *Lown-Ganong-Levine. *Wolff-Parkinson-White ... Those with LGL syndrome have episodes of abnormal heart racing with a short PR interval and normal QRS complexes seen on their ... with normal QRS complex configuration and duration on their resting ECG.[1] A short PR interval found incidentally on an ECG ...
Adding to its complex toxicity, cocaine targets muscarinic acetylcholine, N-methyl-D-aspartate (NMDA), sigma, and kappa-opioid ... Studies have shown that cocaine usage during pregnancy triggers premature labor and may lead to abruptio placentae. Cocaine can ... "Cocaine-associated increase of atrial natriuretic peptides: an early predictor of cardiac complications in cocaine users?". ... Cocaine pharmacodynamics involve multiple complex mechanisms, although its half-life is short (~ 1 hour). This drug binds and ...
Extra beats include premature atrial contractions, premature ventricular contractions, and premature junctional contractions. ... These studies are performed to assess complex arrhythmias, elucidate symptoms, evaluate abnormal electrocardiograms, assess ... Supraventricular tachycardias include atrial fibrillation, atrial flutter, and paroxysmal supraventricular tachycardia. ... Atrial fibrillation and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990.[55] Sudden cardiac death is ...
Narrow QRS complexes are visible as well. Causes[edit]. MAT usually arises because of an underlying medical condition. Its ... Multifocal atrial tachycardia. Multifocal (or multiform) atrial tachycardia (MAT) is an abnormal heart rhythm,[1] specifically ... Management of multifocal atrial tachycardia consists mainly of the treatment of the underlying cause,[3] but if clinically ... Kastor JA (1990). "Multifocal Atrial Tachycardia". N Engl J Med. 322 (24): 1713-17. doi:10.1056/NEJM199006143222405. PMID ...
The source of the re-entry circuit can be identified by evaluating the morphology of the QRS complex in the V1 lead of a ... This is similar to the re-entrant circuits that are the cause of atrial flutter and the re-entrant forms of supraventricular ... Various diagnostic criteria have been developed to determine whether a wide complex tachycardia is ventricular tachycardia or a ... Stewart RB, Bardy GH, Greene HL (June 1986). "Wide complex tachycardia: misdiagnosis and outcome after emergent therapy". ...
The decreased right atrial pressure and the increased left atrial pressure pushes the septum primum against the septum secundum ... Both include the whole body, but the general movements are slower and have a complex sequence of involved body parts, while the ... although premature birth can also result in low birth weight. Low birth weight increases risk for perinatal mortality (death ... described as premature by weight, to have a higher risk of secondary medical problems. ...
It is now becoming clear that ankyrin-B exists in a biomolecular complex with the sodium potassium ATPase, sodium calcium ... Robaei, D; Ford, T; Ooi, SY (February 2015). "Ankyrin-B syndrome: a case of sinus node dysfunction, atrial fibrillation and ... "Ankyrin-B syndrome: enhanced cardiac function balanced by risk of cardiac death and premature senescence". PLOS ONE. 2 (10): ... The human ankyrin-B arrhythmogenic mutation (Glu1425Gly) blocks the formation of this complex, which provides a mechanism ...
However, as the atrial baroreceptors increase their rate of firing and as they stretch due to the increased blood pressure, the ... The relationship between electrolytes and HR is complex, but maintaining electrolyte balance is critical to the normal wave of ... a resting heart rate above 65 beats per minute has been shown to have a strong independent effect on premature mortality; every ... There is a similar reflex, called the atrial reflex or Bainbridge reflex, associated with varying rates of blood flow to the ...
Narrow complex *Sinus tachycardia, which originates from the sino-atrial (SA) node, near the base of the superior vena cava ... or wide complex tachycardias. Narrow and wide refer to the width of the QRS complex on the ECG. Narrow complex tachycardias ... Atrial fibrillation is one of the most common cardiac arrhythmias. In general, it is an irregular, narrow complex rhythm. ... They may be classified into narrow and wide complex based on the QRS complex.[4] Presented order of most to least common, they ...
QRS complexes should be narrow, signifying that they are initiated by normal conduction of atrial electrical activity through ... Valvular atrial fibrillation refers to atrial fibrillation attributable to moderate to severe mitral valve stenosis or atrial ... 193,300 with atrial flutter (2015)[10]. Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm (arrhythmia) ... Left atrial appendage occlusion[edit]. There is tentative evidence that left atrial appendage occlusion therapy may reduce the ...
Left atrial dimension. LA. Range 24 - 40 mm[16] Fractional shortening (FS) is the fraction of any diastolic dimension that is ... giving rise to premature ventricular contractions, also called ventricular extra beats. When these beats become grouped the ... pulmonary veins) → left atrium (atrial appendage) → mitral valve → left ventricle → aortic valve (aortic sinus) → (aorta and ... venae cavae, coronary sinus) → right atrium (atrial appendage, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve ...
... not preceded by any atrial complex or P wave or preceded by an abnormal P wave with a shorter PR interval. Rarely, the abnormal ... Premature junctional contractions (PJCs), also called atrioventricular junctional premature complexes or junctional ... On the surface ECG, premature junctional contractions will appear as a normally shaped ventricular complex or QRS complex, ... Premature ventricular contraction. References[edit]. *^ Tipton MJ, Kelleher PC, Golden FS Institute of Naval Medicine, Gosport ...
... atrial arrhythmia,[3] first/second degree heart blocks, atrial fibrillation, syncope, elevated neck veins and jugular venous ... For patients with light-chain amyloidosis, the QRS complex pattern is skewed,[1] with poor R-waves of the chest leads.[3] ... amiodarone for patients with atrial fibrillation to prevent arrhythmias, and warfarin used after a cardioembolic episode.[1] ... Premature contraction. *Atrial. *Junctional. *Ventricular. Pre-excitation syndrome. *Lown-Ganong-Levine. *Wolff-Parkinson-White ...
Digoxin is used to treat atrial fibrillation, atrial flutter and sometimes heart failure.[43] ... and protection of cells from premature aging, antioxidant activity, antioxidant content and antioxidant properties, and ... Extraction can be practical when the compound in question is complex.[80] ... plant extracts may have complex effects on the human body.[5] ...
... atrial fibrillation, and premature ventricular contractions, and hypertension.[7] People with hyperthyroidism may experience ... George H. W. Bush, former U.S. president, developed new atrial fibrillation and was diagnosed in 1991 with hyperthyroidism due ... atrial fibrillation), which may lead to stroke. If the eyes are proptotic (bulging) enough that the lids do not close ... Immune complex). Foreign. *Henoch-Schönlein purpura. *Hypersensitivity vasculitis. *Reactive arthritis. *Farmer's lung ...
Complex multi-systemic diseases, such as rheumatic fever, were categorised only after the observation of large, hospital based ... Premature contraction. *Atrial. *Junctional. *Ventricular. Pre-excitation syndrome. *Lown-Ganong-Levine. *Wolff-Parkinson-White ...
Evidence of a complex pattern of behavior or cognitive abnormalities inconsistent with developmental level in the following CNS ... Growth measurements must be adjusted for parental height, gestational age (for a premature infant), and other postnatal insults ... Ventricular septal defect most commonly seen, followed by an atrial septal defect. ... The IOM system requires structural or neurological impairment for a diagnosis of FAS, but also allows a "complex pattern" of ...
Child-specific: premature epiphyseal closure and associated short stature, precocious puberty in boys, delayed puberty and ... Sullivan ML, Martinez CM, Gallagher EJ (1999). "Atrial fibrillation and anabolic steroids". The Journal of emergency medicine. ... "Comparison of crystal structures of human androgen receptor ligand-binding domain complexed with various agonists reveals ... For example, AAS may prematurely stop the lengthening of bones (premature epiphyseal fusion through increased levels of ...
It is now used in only a small number of people with refractory symptoms, who are in atrial fibrillation and/or who have ... CCM is particularly suitable for the treatment of heart failure with normal QRS complex duration (120 ms or less) and has been ... atrial fibrillation, valvular heart disease, excess alcohol use, infection, and cardiomyopathy of an unknown cause.[2][3] These ... people with coexisting atrial fibrillation, a prior embolic event, or conditions which increase the risk of an embolic event ...
Although complex disorders often cluster in families, they do not have a clear-cut pattern of inheritance. This makes it ... Premature ovarian failure 7. *SOX10 *Waardenburg syndrome 4c. *Yemenite deaf-blind hypopigmentation syndrome ... Complex disorders are also difficult to study and treat, because the specific factors that cause most of these disorders have ... Studies which aim to identify the cause of complex disorders can use several methodological approaches to determine genotype- ...
Extra beats include premature atrial contractions, premature ventricular contractions and premature junctional contractions.[3] ... Long QT syndrome is another complex problem in the heart and has been labeled as an independent factor in mortality. There are ... These are mainly the result of premature atrial contractions, usually give no symptoms, and have little consequence. However ... Atrial fibrillation affects the upper chambers of the heart, known as the atria. Atrial fibrillation may be due to serious ...
Atrial Premature Complexes - etiology - mortality - physiopathology Biomarkers - blood Denmark Disease-Free Survival Diuretics ... Ventricular Premature Complexes - diagnosis - etiology - mortality - physiopathology Abstract. Severe hypokalaemia can ... p-Potassium was inversely associated with frequency of premature ventricular complexes (PVCs) especially in combination with ...
... or premature atrial complexes, are the most common of the heart arrhythmias. In most cases treatment is not needed or ... Frequent Premature Atrial Complexes Predict New Occurrence of Atrial Fibrillation and Adverse Cardiovascular Events. Europace ... Premature Atrial Complexes (PACs) The Most Common Type of Cardiac Arrhythmia By Richard N. Fogoros, MD, a board-certified ... Premature atrial complexes, or PACs, are "extra" heartbeats that arise within the atria of the heart. PACs are the most common ...
... meet increased attention as a potential intermediary between sinus rhythm and atrial fibrillation (AF). Patients with even high ... Premature atrial complexes (PACs) meet increased attention as a potential intermediary between sinus rhythm and atrial ... Burden of Premature Atrial Complexes and Risk of Recurrent Stroke and Death in Patients with Mild to Moderate Ischemic Stroke. ... Detection of Atrial Fibrillation and Atrial Flutter by Pacemaker Device Interrogation After Transcatheter Aortic Valve ...
... and premature ventricular complexes (PVCs), Ask a Doctor about diagnosis, treatment and medication for Long qt syndrome, Online ... Premature atrial complexes (PACs) and premature ventricular complexes (PVCs) - Online Doctor Chats ... Are PACs (premature atrial contractions) and PVCs (premature ventricular contractions)related to MVP (mitral valve prolapse)? ... Premature atrial complexes (PACs) and premature ventricular complexes (PVCs) Information about z- pac ...
Premature atrial contractions (PACs), also known as atrial premature complexes (APC) or atrial premature beats (APB), are a ... This can be either a premature atrial contraction or a premature impulse from the atrioventricular node. SVES should be viewed ... Often, hypertension goes hand in hand with various atrial fibrillations including premature atrial contractions (PACs).[5] ... narrow QRS complex. However, if the atrial beat is premature enough, it may reach the atrioventricular node during its ...
Clinical significance of additional ablation of atrial premature beats after catheter ablation for atrial fibrillation. In: ... Clinical significance of additional ablation of atrial premature beats after catheter ablation for atrial fibrillation. Yonsei ... Clinical significance of additional ablation of atrial premature beats after catheter ablation for atrial fibrillation. / Kim, ... Purpose: The clinical significance of post-procedural atrial premature beats immediately after catheter ablation for atrial ...
Extra beats include premature atrial contractions, premature ventricular contractions, and premature junctional contractions.[3 ... Long QT Syndrome is another complex problem in the heart and has been labeled as an independent factor in mortality. There are ... Atrial fibrillation affects the upper chambers of the heart, known as the atria. Atrial fibrillation may be due to serious ... Premature junctional contraction. Ventricular. *Premature ventricular contractions (PVCs), sometimes called ventricular extra ...
Introduction: Frequent premature atrial complexes (fPACs) predict increased risk of Atrial Fibrillation (AF). Risk factors for ... Abstract 16098: Risk Factors for Frequent Premature Atrial Complexes in a Ten Year Holter Cohort. Tushar Acharya, Vishnu K ... Abstract 16098: Risk Factors for Frequent Premature Atrial Complexes in a Ten Year Holter Cohort ... Abstract 16098: Risk Factors for Frequent Premature Atrial Complexes in a Ten Year Holter Cohort ...
... atrial premature complexes in cats including diagnosis and symptoms, pathogenesis, prevention, treatment, prognosis and more. ... Irritation of the atrial myocardium causes premature depolarization of a region of the atria which spreads across the atria to ... Atrial enlargementsecondary to cardiomyopathy especially hypertrophic Heart: hypertrophic cardiomyopathy.. *Atrial disease, eg ... Atrial irritation, eg pericarditis, bacteremia, cardiac surgery or catheterization.. *Drugs, eg digitalis toxicity, ...
What is atrial flutter with variable AV block with premature ventricular or aberrantly conducted complexes? is same with AV ... What is atrial flutter with variable AV block with premature ventricular or aberrantly conducted complexes? is same with AV ... Can I have Atrial Flutter (AF) while wearing a pacemaker for complete heart block? Do I need ablation or it manag more Can I ... Have left atrial cavity dilated,,right ventricula more I have a couple situations with my heart. I had 2 Doppler done. Have ...
Premature atrial complexes are common irregularities in heartbeats. They usually require no treatment except when they are ... Premature Atrial Complexes Symptoms. Premature atrial complexes usually do not cause symptoms, although you may sometimes feel ... How to Treat Premature Atrial Complexes. Premature atrial complexes are usually diagnosed with a Holter monitor, an ... Premature Atrial Complexes. Many people occasionally experiencepremature atrial complexes, a common type of heart arrhythmia. ...
Review of the atrial ectopics and premature atrial contractions (PACs) with ectopic pacemaking tissue within the atria. Review ... AKA: Atrial ectopics, atrial extrasystoles, atrial premature beats, atrial premature depolarisations. Origin of Ectopic Beats. ... Atrial Ectopic and Premature Atrial Complex (PAC). These arise from ectopic pacemaking tissue within the atria. There is an ... Clinical Significance of Premature Atrial Complex (PAC). *PACs are a normal electrophysiological phenomenon not usually ...
... beats/complex), with emphasis on classification, ECG criteria, causes, symptoms and clinial management. Includes a complete e- ... Figure 1. Typical premature atrial contraction (beat / complex).. Figure 2. Atrial premature beat with retrograde P-wave.. The ... Premature atrial contraction (premature atrial beat / complex): ECG & clinical implications. Chapter contents Show ... The prevalence of premature atrial beats increase with age. It is considered normal to have a few premature atrial complexes ...
atrial fibrillation; atrial premature complexes; cryptogenic stroke; electrocardiography; projections and predictions; risk ... Holter-detected atrial premature beats [APBs], runs of atrial tachycardia, age, and left atrial enlargement) and subsequent AF ... Atrial premature beats predict atrial fibrillation in cryptogenic stroke: results from the EMBRACE trial.. Gladstone DJ1, ... Many ischemic strokes or transient ischemic attacks are labeled cryptogenic but may have undetected atrial fibrillation (AF). ...
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Atrial Premature Complexes. Atrial Tachycardia. Atrial Fibrillation. Atrioventricular (AV) Junctional Premature Complexes & ...
Atrial Fibrillation and Atrial Flutter.. Atrial Premature Complexes.. Atrial Septal Defect.. Atrial Standstill.. Atrial Wall ... Ventricular Premature Complexes.. Ventricular Septal Defect.. Ventricular Standstill (Asystole).. Ventricular Tachycardia. ... Eosinophilic Granuloma Complex.. Epididymitis / Orchitis.. Epilepsy, Idiopathic, Genetic, Primary.. Epiphora.. Episcleritis. ...
Atrial Premature Complexes. A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals ... Atrial premature complexes are characterized by premature P waves on ECG which are different in configuration from the P waves ... typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot ... Atrial fibrillation (AF) wavefront dynamics are complex and difficult to interpret, contributing to uncertainty about the ...
The risk of stroke and thromboembolism in atrial fibrillation is established. There are clear guidelines in anticoagulation ... Atrial Premature Complexes. A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals ... Atrial premature complexes are characterized by premature P waves on ECG which are different in configuration from the P waves ... Atrial Flutter Has Less Left Atrial Spontaneous Contrast and Higher Left Atrial Appendage Emptying Velocity Compared with ...
... ventricular diastolic function and left atrial reverse remodeling after catheter ablation of premature ventricular complexes. ... ventricular diastolic function and left atrial reverse remodeling after catheter ablation of premature ventricular complexes, ... ventricular diastolic function and left atrial reverse remodeling after catheter ablation of premature ventricular complexes. ... ventricular diastolic function and left atrial reverse remodeling after catheter ablation of premature ventricular complexes. ...
Arrhythmia; Atrial fibrillation; Treatment; Recurrence; Atrial premature complexes National Category Cardiac and Cardiovascular ... Higher burden of supraventricular ectopic complexes early after catheter ablation for atrial fibrillation is associated with ... Our aim was to investigate the association between post-procedural burden of supraventricular ectopic complexes (SVEC) and the ... risk of long-term atrial fibrillation (AF) recurrence. Methods and results A total of 125 patients undergoing catheter ablation ...
Atrial Premature Complexes. Similar to VPCs, atrial premature complexes involveextra heart beats that occur alone or in series ... Ventricular Premature Complexes. Ventricular premature complexes (VPCs) are single beats that disrupt the usual sequence of ... Many people with atrial flutter develop atrial fibrillation over time. Atrial flutter can also make it harder for your heart to ... Premature Beats. Premature beats are early, extra heartbeats, often called "skipped beats." Premature beats can arise from the ...
A complex, a thing, this word, dint pay too much attention.. But premature atrial, this is key. That the atrium fires from ... but maybe we can say that all the P waves of the Atrial Tachycardia are to look the same, but by wondering Atrial pacemaker, it ... Not atrial flutter, since there you have the saw tooth multiple Ps for each QRS.. Not Sinus tachycardia, since there the Ps are ... WANDERING ATRIAL PACEMAKER. Take the E away from pacemaker and you have PAC maker, so it is a wondering, like by everywhere, ...
Termination of a broad complex tachycardia by a premature atrial complex.. Selvaraj R, Arunprasath P, Babu E, Balachander J. ... Multiple inappropriate rate drop responses triggered by ventricular premature beats.. Babu E, George G, Balachander J, Selvaraj ... Sensitized near-infrared luminescence from Nd(III), Yb(III) and Er(III) complexes by energy-transfer from ruthenium 1,3-Bis([1, ... A selective, long-lived deep-red emissive ruthenium(II) polypyridine complexes for the detection of BSA. ...
2. Palpitations may be from premature ventricular or atrial complexes. The best way to find out is an EKG and 24 hour holter ...
Premature atrial complexes in an ischemic stroke population and risk of recurrent stroke: a systematic review. Sejr, M. H., ... Death and thrombo-embolic risk after ablation of atrial flutter compared with atrial fibrillation: a nationwide cohort study. ... Disease progression after ablation for atrial flutter compared with atrial fibrillation: A nationwide cohort study. Skjøth, F. ... Atrial flutter and thromboembolic risk: a systematic review. Vadmann, H., Nielsen, P. B., Hjortshøj, S. P., Riahi, S., ...
Instability in ventricular repolarization in the presence of premature activations (PA) plays an important role in ... Atrial Premature Complexes / diagnosis*, etiology, physiopathology. Computer Simulation. Electrocardiography*. Female. Heart ... Previous Document: A Randomized Placebo-Controlled Study of Vernakalant (Oral) for the Prevention of Atrial Fibrillatio.... ... BACKGROUND: Instability in ventricular repolarization in the presence of premature activations (PA) plays an important role in ...
a change in the frequency of premature atrial and ventricular complexes. *a change in serum total cholesterol level ...
Pattern, Atrial premature complex (beat), Base pattern , ECG, Heart , CVS. MDC_ECG_BEAT_ATR_P_C. APC. Atrial premature ... Aberrated atrial premature beat (Ashman beat: atrial premature beat with abnormal QRS morphology). 10. 8304. ... Junctional (nodal) premature contraction. 10. 8288. Pattern, Aberrated atrial premature beat (Ashman), Base pattern , ECG, ... Supraventricular premature contraction (atrial or nodal premature beat with normal QRS morphology). 10. 8256. ...
atrial premature complexes (3) Filters. * Has Multimedia (1) Specify Date Range. From:. To:. Apply. ...
Atrial Causes, Patient Concerns and Latest Treatments and Congescor Reports and Side Effects. ... Atrial. Fibrillation in Esophageal Holter Electrocardiography Conditions: Atrial. Fibrillation; Atrial. Premature Complexes. ... Atrial. /Left Atrial. Appendage in Subjects With Nonvalvular Atrial. Fibrillation or Atrial. Flutter Condition: Atrial. ... Atrial. Flutter Ablation Condition: Atrial. Flutter. Interventions: Device: Atrial. flutter irrigated catheter; Device: Atrial ...
left atrium/atrial. MAP. monophasic action potential. PAC. premature atrial complex. PV. pulmonary vein. ... For each premature atrial complex (PAC), stimulus artifact (Stim) and phases 1, 2, and 3 of the AP are labeled. Activation time ... Objectives The authors sought to study mechanisms to explain why single premature atrial complexes (PACs) from the pulmonary ... Paroxysmal AF typically requires premature atrial complexes (PACs) (1) or sustaining mechanisms (2) from pulmonary veins (PVs) ...
  • Premature atrial complexes, or PACs, are "extra" heartbeats that arise within the atria of the heart. (verywell.com)
  • PACs are early (that is, premature) electrical impulses that are generated within the cardiac atria, but not from the sinus node. (verywell.com)
  • Premature atrial contractions ( PACs ), also known as atrial premature complexes ( APC ) or atrial premature beats ( APB ), are a common cardiac dysrhythmia characterized by premature heartbeats originating in the atria . (wikipedia.org)
  • While the sinoatrial node typically regulates the heartbeat during normal sinus rhythm , PACs occur when another region of the atria depolarizes before the sinoatrial node and thus triggers a premature heartbeat. (wikipedia.org)
  • Often, hypertension goes hand in hand with various atrial fibrillations including premature atrial contractions (PACs). (wikipedia.org)
  • p-Potassium was inversely associated with frequency of premature ventricular complexes (PVCs) especially in combination with diuretic treatment (r = -0.22, P = 0.015). (arctichealth.org)
  • Premature atrial contractions are often benign, requiring no treatment. (wikipedia.org)
  • We hypothesized that the provocation of immediate recurrence of atrial premature beats (IRAPB) and additional ablation improves the clinical outcome of AF ablation. (elsevier.com)
  • Post-procedure IRAPB was defined as frequent atrial premature beats (≥6/min) under isoproterenol infusion (5 μg/min), monitored for 10 min after internal cardioversion, and we ablated mappable IRAPBs. (elsevier.com)
  • [3] Extra beats include premature atrial contractions , premature ventricular contractions , and premature junctional contractions . (readtiger.com)
  • Premature atrial contractions are typically diagnosed with an electrocardiogram , Holter monitor , or cardiac event monitor . (wikipedia.org)
  • Typically, the atrial impulse propagates normally through the atrioventricular node and into the cardiac ventricles , resulting in a normal, narrow QRS complex . (wikipedia.org)
  • A supraventricular extrasystole ( SVES ) is an extrasystole or premature electrical impulse in the heart , generated above the level of the ventricle . (wikipedia.org)
  • However, if the atrial beat is premature enough, it may reach the atrioventricular node during its refractory period, in which case it will not be conducted to the ventricle and there will be no QRS complex following the P wave. (wikipedia.org)
  • This can be either a premature atrial contraction or a premature impulse from the atrioventricular node . (wikipedia.org)
  • Premature Atrial Contractions in the General Population: Frequency and Risk Factors. (verywell.com)
  • Since the premature beat initiates outside the sinoatrial node , the associated P wave appears different from those seen in normal sinus rhythm . (wikipedia.org)
  • In otherwise healthy patients, occasional premature atrial contractions are a common and normal finding and do not indicate any particular health risk. (wikipedia.org)
  • SVES should be viewed in contrast to a premature ventricular contraction which has a ventricular origin and the associated QRS change. (wikipedia.org)
  • Multivariable logistic regression assessed the association between baseline variables (Holter-detected atrial premature beats [APBs], runs of atrial tachycardia, age, and left atrial enlargement) and subsequent AF detection. (nih.gov)
  • Supraventricular arrhythmias, for instance, start in the upper chambers of the heart (the atria) and include atrial fibrillation (A-fib), Atrial Flutter, supraventricular tachycardia (SVT), and Wolff-Parkinson-White (WPW) syndrome. (mountsinai.org)
  • 9. Electrophysiological ablation for atrial tachycardia within 6 months of the operation. (bioportfolio.com)
  • Whats the difference between Atrial Tachycardia and wondering atrial pacemaker? (brainscape.com)
  • Atrial Tachycardia is three or more PAC in a row, and PACs are a different type of P wave, but maybe we can say that all the P waves of the Atrial Tachycardia are to look the same, but by wondering Atrial pacemaker, it is just confused, wondering, should I be this type of P wave or should I be that type of P wave. (brainscape.com)
  • So it will have each of its P waves looki g different, but Atrial Tachycardia, it is fast and repeared PACs. (brainscape.com)
  • Only way to differnetiate this from atrial tachycardia is to know the history, that it was sudden onset, but other than that, they look the same. (brainscape.com)
  • The other rare E.C.G. changes include deformity of QRS complexes, prolongation of PR interval, atrial premature beats, and atrial tachycardia. (wikipedia.org)
  • The presence of a paced rhythm exactly at the upper rate limit with atrial sensing and exact A-V association warrants evaluation for pacemaker-mediated tachycardia (PMT). (medscape.com)
  • Frumin H, Furman S. Endless loop tachycardia started by an atrial premature complex in a patient with a dual chamber pacemaker. (medscape.com)
  • Tracking of atrial flutter during DDD pacing: another form of pacemaker-mediated tachycardia. (medscape.com)
  • Klementowicz PT, Furman S. Selective atrial sensing in dual chamber pacemakers eliminates endless loop tachycardia. (medscape.com)
  • Validation of device algorithm to differentiate pacemaker-mediated tachycardia from tachycardia due to atrial tracking. (medscape.com)
  • Telemetered ECG tracing with surface lead II (top) and intracardiac electrograms (atrial electrogram [center] and ventricular electrogram [lower]) and marker channel (bottom) showing pacemaker-mediated tachycardia (PMT). (medscape.com)
  • This is a typical example of PMT with ventricular pacing at maximum tracking rate (VP-MT) and then termination of the tachycardia as the atrial sensing (AS) is in the PVARP. (medscape.com)
  • It is also possible you experienced an arrhythmia, such as atrial fibrillation, atrial flutter, atrial tachycardia, or AV nodal reentrant tachycardia. (zocdoc.com)
  • We learn, for example, that during one electrocardiogram Sparks "had a rare premature atrial complex episode of supraventricular tachycardia, occasional to frequent multiform ventricular complexes and non-specific ST segment changes. (justia.com)
  • Ablation of cardiac arrhythmias without fluoroscopy has been described and shown to be safe in the ablation of supraventricular tachycardia, typical atrial flutter and atrial fibrillation (AFib). (acc.org)
  • Dr. Atiga's expertise is the diagnosis and treatment of all types of cardiac arrhythmias, including atrial fibrillation, supraventricular tachycardia (SVT), ventricular tachycardia, premature ventricular complexes (PVCs), and bradycardia. (medstarhealth.org)
  • Polymorphic ventricular tachycardia (PVT) is a form of ventricular tachycardia in which there are multiple ventricular foci with the resultant QRS complexes varying in amplitude, axis and duration. (lifeinthefastlane.com)
  • Premature Atrial Contractions in the General Population: Frequency and Risk Factors. (verywell.com)
  • Premature contractions ("ectopics") are classified by their origin - atrial ( PAC ), junctional ( PJC ) or ventricular ( PVC ). (litfl.com)
  • Persons with premature beats might perceive this as palpitations, because of the stronger ventricular contractions caused by the increased filling. (ecgwaves.com)
  • A type of cardiac arrhythmia with premature contractions of the HEART VENTRICLES. (bioportfolio.com)
  • Premature atrial contractions are typically diagnosed with an electrocardiogram , Holter monitor , or cardiac event monitor . (wikipedia.org)
  • Premature atrial contractions are often benign, requiring no treatment. (wikipedia.org)
  • In otherwise healthy patients, occasional premature atrial contractions are a common and normal finding and do not indicate any particular health risk. (wikipedia.org)
  • Interval between two paced atrial contractions. (pacemakerclub.com)
  • On the surface ECG, premature junctional contractions will appear as a normally shaped ventricular complex or QRS complex, not preceded by any atrial complex or P wave or preceded by an abnormal P wave with a shorter PR interval. (wikipedia.org)
  • A type of cardiac arrhythmia with premature atrial contractions or beats caused by signals originating from ectopic atrial sites. (icd9data.com)
  • if these reach threshold amplitude they may manifest as premature ventricular contractions (PVCs). (lifeinthefastlane.com)
  • It is associated with irregular and premature contractions, which can either originate in portions of the atria, or upper chambers of the heart, or ventricles, the lower chambers of the heart. (reference.com)
  • Many people occasionally experiencepremature atrial complexes, a common type of heart arrhythmia. (newhealthadvisor.org)
  • Atrial Fibrillation, also called AFib, is the most common form of arrhythmia and occurs more frequently as we age. (mountsinai.org)
  • If you have Afib (Atrial Fibrillation) or any type of cardiac arrhythmia and need life insurance, some arrhythmia can be harmless and have very little impact on your life insurance rate. (americanterm.com)
  • Related terms are supraventricular arrhythmia, paroxysmal atrial fibrillation and paroxysmal atrial flutter. (americanterm.com)
  • Atrial fibrillation (AF) is the most common type of arrhythmia. (patientsville.com)
  • In this paper, an index for evaluating Distance of a healthy heart from Sino-Atrial Blocking Arrhythmia (SABA) is presented. (scirp.org)
  • After definition of the main pacemakers' model of heart, Sino-Atrial (SA) and Atrio-Ventricular nodes (AV), the boundary of synchronization, which demonstrates the boundary of blocking arrhythmia, is obtained using perturbation method. (scirp.org)
  • Gholizade-Narm, H. , Khademi, M. , Azemi, A. and Karimi-Ghartemani, M. (2010) An index for evaluating distance of a healthy heart from Sino-Atrial blocking arrhythmia. (scirp.org)
  • Perhaps the commonest arrhythmia causing a patient to visit the family doctor is the symptomatic premature ventricular beat/complex (ventricular ectopic). (mhmedical.com)
  • Atrial fibrillation (AF) is the most common arrhythmia, with a prevalence rising from 0.7% in the age group 55-59 years to 17.8% in those aged ≥85 years. (biomedsearch.com)
  • Atrial fibrillation (AF) is the most common arrhythmia, increasing in prevalence with age. (ahajournals.org)
  • Atrial fibrillation is an arrhythmia, characterized by grossly disorganized atrial electrical activity, which is irregular in respect to both rate and rhythm (see figures 14 , 15a, 15b ). (rjmatthewsmd.com)
  • Repeated episodes of this arrhythmia can result in a marked shortening of the atrial refractory period and a loss of the normal lengthening of atrial refractiveness at slower heart rates. (rjmatthewsmd.com)
  • A critical mass of atrial tissue is required to sustain the minimal number of simultaneous circuits necessary for the perpetuation of the arrhythmia. (rjmatthewsmd.com)
  • Electrocardiography revealed left atrial enlargement, isolated frequent ventricular premature complexes, right axis deviation, left ventricular hypertrophy and diffuse T wave abnormalities. (pulsus.com)
  • Electrocardiography may demonstrate atrial arrhythmias (atrial premature complexes, atrial fibrillation), especially in severely affected animals with left atrial dilatation. (merckvetmanual.com)
  • Irritation of the atrial myocardium causes premature depolarization of a region of the atria which spreads across the atria to the AV node. (vetstream.com)
  • Because the impulse originates in the atria it will pass through the bundle of His and thereby produce a normal QRS complex (provided that intraventricular conduction is normal). (ecgwaves.com)
  • A premature atrial contraction occurs when an ectopic focus in the atria discharges before the next sinus impulse. (ecgwaves.com)
  • The premature impulse may depolarize the atria and subsequently the ventricles, provided that the myocardium and conduction system have repolarized. (ecgwaves.com)
  • A. APC, or atrial premature complex (or beat) is a beat that arise in the atria of the heart from outside the normal mechanism of heartbeats. (thefreedictionary.com)
  • atrial complex the P wave of the electrocardiogram , representing electrical activity of the atria. (thefreedictionary.com)
  • The abnormal P wave is followed by a QRS complex. (newhealthadvisor.org)
  • It is characterized by the premature QRS complex on ECG that is of abnormal shape and great duration (generally >129 msec). (bioportfolio.com)
  • Abnormal or ectopic impulses are described based on their site of origin (atrial, junctional, supraventricular, ventricular). (vin.com)
  • Abnormal premature impulses (complexes) may occur singly or in multiples. (vin.com)
  • Echocardiography demonstrates malformation of the mitral valve complex (fused chordae tendineae and thickened, immobile valve leaflets, abnormal appearance to the papillary muscles) and left atrial and ventricular dilatation. (merckvetmanual.com)
  • QRS complex a group of waves seen on an electrocardiogram , representing ventricular depolarization. (thefreedictionary.com)
  • A novel device for detection of (asymptomatic) atrial fibrillation is presented and clinically validated for performance compared with the 12-lead electrocardiogram (ECG, Gold standard). (biomedsearch.com)
  • Atrial premature complexes (APCs) can be seen on an electrocardiogram (EKG) as a premature wave called a P wave. (petmd.com)
  • These foci may mimic the appearance of atrial fibrillation on the surface electrocardiogram or, more commonly, may degenerate or trigger classic atrial fibrillation. (rjmatthewsmd.com)
  • Depolarization of the ventricles results in the largest part of the ECG signal, known as the QRS complex.Repolarization of the heart muscle (myocardium) is represented by the ST segment, an isoelectric line, and the T wave, which is seen as an upright deflection. (newhealthadvisor.org)
  • In most cases the premature atrial impulse is conducted to the ventricles, which results in ventricular depolarization and the appearance of a QRS complex . (ecgwaves.com)
  • Pucelikova T , Kautznerova D, Vedlich D, Tintera J, Kautzner J . A complex anomaly of systemic and pulmonary venous return associated with sinus venosus atrial septal defect. (ikem.cz)
  • An oblique peri-axial image perpendicular to the long-axis of the pLSVC at the level of left pulmonary veins was acquired which demonstrated the pLSVC coursing between the left atrial appendage and the left superior pulmonary vein completely adjacent to the walls of these structure (Movie 3). (scmr.org)
  • There was no communication between the pLSVC and the pulmonary veins or left atrial appendage. (scmr.org)
  • Since the pLSVC was adjacent to the left atrial wall and the left superior pulmonary vein, the electrical activity within the pLSVC was able to conduct into these structures thereby potentially initiating atrial fibrillation. (scmr.org)
  • Take the E away from pacemaker and you have PAC maker, so it is a wondering, like by everywhere, atrial, having to do with the atrium, PAC-maker, that each P is strange. (brainscape.com)
  • Frohlig G, Schwerdt H, Schieffer H, Bette L. Atrial signal variations and pacemaker malsensing during exercise: a study in the time and frequency domain. (medscape.com)
  • Generation of aberrant impulses in ectopic areas of heart outside of normal cardiac pacemaker cells results in premature contraction. (reference.com)
  • interpolated premature ventricular complex a premature ventricular complex that does not interfere with the conduction of the next sinus beat, i.e., it lacks the usual following compensatory pause. (thefreedictionary.com)
  • P-Q interval - Time from onset of atrial muscle activation, through conduction over the A-V node, His bundle and purkinje fibers. (vin.com)
  • SVES should be viewed in contrast to a premature ventricular contraction which has a ventricular origin and the associated QRS change. (wikipedia.org)
  • In the differential diagnosis of PMT, sinus and tracked atrial tachyarrhythmias must be considered. (medscape.com)
  • Identification of their presence along with demonstration of electrical activity within such structures is key to successful ablation of atrial fibrillation 5 . (scmr.org)
  • We also compared the changes in the left atrial volumes and left atrial volume index (LAVI) after PVC ablation. (elsevier.com)
  • Our aim was to investigate the association between post-procedural burden of supraventricular ectopic complexes (SVEC) and the risk of long-term atrial fibrillation (AF) recurrence. (diva-portal.org)
  • Atrial disease , eg congenital cardiac defects Congenital heart disease: overview , neoplasia Pericardium: neoplasia - heartbase tumor , cardiomyopathy, AV valve disease in older cats. (vetstream.com)
  • Congenital malformation of the mitral valve complex (mitral valve dysplasia) is a common congenital cardiac defect in cats. (merckvetmanual.com)
  • Excluding animals born with a congenital heart disease, atrial premature complexes often affect older dogs, especially small-breed dogs. (petmd.com)
  • Since the premature beat initiates outside the sinoatrial node , the associated P wave appears different from those seen in normal sinus rhythm . (wikipedia.org)
  • Sinus rhythm with premature atrial complexes. (mhmedical.com)
  • This phenomenon called atrial remodelling may be reversible with maintenance of sinus rhythm. (rjmatthewsmd.com)
  • Sinus rhythm, or possibly ectopic atrial rhythm (biphasic / inverted P waves in lead II). (lifeinthefastlane.com)
  • Under normal circumstances, the heart works with exceptional synchronization between the various atrial and ventricular structures, resulting in a consistent rhythmic pattern. (petmd.com)
  • The vein of Marshall and pLSVC which drains into the coronary sinus as well as the ligament of Marshall have all been implicated in the cause for premature atrial complexes and initiation of atrial fibrillation 3,4 . (scmr.org)
  • OBJECTIVES: We investigated the electrophysiologic characteristics in the initiation of paroxysmal atrial fibrillation (PAF) from a focal area. (elsevier.com)
  • Chen, S A. / Electrophysiologic characteristics in initiation of paroxysmal atrial fibrillation from a focal area . (elsevier.com)