Booktopia has Cardiac Arrhythmias 2003, Proceedings of the 8th International Workshop on Cardiac Arrhythmias by Antonio Raviele. Buy a discounted Hardcover of Cardiac Arrhythmias 2003 online from Australias leading online bookstore.
cardiac arrhythmia - MedHelps cardiac arrhythmia Center for Information, Symptoms, Resources, Treatments and Tools for cardiac arrhythmia. Find cardiac arrhythmia information, treatments for cardiac arrhythmia and cardiac arrhythmia symptoms.
About 20 years ago, the first traditional cardiac EP devices were designed and they were meant for treating less complex arrhythmias. As it became more and more obvious that there is an actual need for a device that can read more complex arrhythmias, savvy businessman Ken Londoner decided to invest in developing a system that can treat atrial fibrillation and ventricular tachyarrhythmia, and thus help millions of people. Today, not only have they developed a device that is able to read more complex arrhythmias, but have also found a way to get rid of the non-biological noise. ...
Defibrillation is a treatment for life-threatening cardiac dysrhythmias, specifically ventricular fibrillation (VF) and non-perfusing ventricular tachycardia (VT). A defibrillator delivers a dose of electric current (often called a countershock) to the heart. This depolarizes a large amount of the heart muscle, ending the dysrhythmia. Subsequently, the bodys natural pacemaker in the sinoatrial node of the heart is able to re-establish normal sinus rhythm. In contrast to defibrillation, synchronized electrical cardioversion is an electrical shock delivered in synchrony to the cardiac cycle. Although the person may still be critically ill, cardioversion normally aims to end poorly perfusing cardiac dysrhythmias, such as supraventricular tachycardia. Defibrillators can be external, transvenous, or implanted (implantable cardioverter-defibrillator), depending on the type of device used or needed. Some external units, known as automated external defibrillators (AEDs), automate the diagnosis of ...
The AVID Study was a multicenter, randomized comparison of antiarrhythmic drug treatment (mostly amiodarone) and ICD implantation to manage patients resuscitated from life-threatening ventricular arrhythmias not due to transient or reversible causes. Eligible arrhythmias included 1) VF; 2) sustained ventricular tachycardia (VT) with syncope; and 3) sustained VT with an ejection fraction of ≤0.40, and symptoms suggestive of severe hemodynamic compromise. The trial design and primary end-point paper have been published (19,20). It is interesting to note that the location of index ventricular arrhythmia presentation was not a factor in eligibility for randomization. Each participating institution had approval from its Institutional Review Board for conduct of the study. All patients who underwent randomization gave written informed consent.. As part of the study design, a registry was maintained of all patients with sustained ventricular arrhythmias at each study site. It included not only ...
Arrhythmias that originate in the ventricular myocardium or His-Purkinje system include premature ventricular beats, ventricular tachycardias that can be sustained or nonsustained, and ventricular fibrillation. Arrhythmia may emerge from a focus of myocardial or Purkinje cells capable of automaticity, or triggered automaticity, or from reentry through areas of scar or a diseased Purkinje system. Ventricular arrhythmias are often associated with structural heart disease and are an important cause of sudden death (Chap. 327). They also occur in some structurally normal hearts, in which case they are usually benign. Evaluation and management are guided by the risk of arrhythmic death, which is assessed based on symptoms, type of arrhythmia, and associated underlying heart disease. ...
Title: Wrist and arm sensing technologies for cardiac arrhythmias detection in long term monitoringSummaryAbnormal heart rhythms are a...
Many cerebral strokes are due to undetected cardiac arrhythmias. Any rapid cardiac arrhythmia may induce neurological symptoms as hemiplegia, aphasia, or psychosis. Twenty-eight patients who developed neurological disturbances following various cardiac arrhythmias were carefully studied. Most of these were due to rapid atrial fibrillation or supraventricular tachycardia. Undetected bradycardia due to vagotonia was a common cause of transient episodes of unconsciousness.. The cerebral blood flow was measured in animals when cardiac arrhythmias were induced. It was noted that frequent premature systoles reduced the cerebral blood flow 7 to 12%. More frequent runs of premature systoles caused a greater reduction. Supraventricular ...
A cardiac event and arrhythmia detection system and method detects arrhythmic cardiac activity or other information from an electrogram signal of a heart. The system senses the electrogram signal through an electrogram lead, preliminarily processes the signal, and converts it to a plurality of discrete digital signals, each of which represents the magnitude of the electrogram signal at a prescribed sample time. The discrete digital signals are applied to both a cardiac event detector and a morphology detector. The morphology detector detects selected changes in the morphology (shape) of the electrogram signal, wherein such changes automatically control the sensitivity (gain and/or threshold) used to detect cardiac events. The occurrence of a prescribed amount of change in the detected morphology over time indicates the occurrence of a prescribed arrhythmic cardiac condition.
A cardiac event and arrhythmia detection system and method detects arrhythmic cardiac activity or other information from an electrogram signal of a heart. The system senses the electrogram signal through an electrogram lead, preliminarily processes the signal, and converts it to a plurality of discrete digital signals, each of which represents the magnitude of the electrogram signal at a prescribed sample time. The discrete digital signals are applied to both a cardiac event detector and a morphology detector. The morphology detector detects selected changes in the morphology (shape) of the electrogram signal, wherein such changes automatically control the sensitivity (gain and/or threshold) used to detect cardiac events. The occurrence of a prescribed amount of change in the detected morphology over time indicates the occurrence of a prescribed arrhythmic cardiac condition.
To evaluate the effects of hypertension on cardiac hypertrophy, on myocardial structure, and on ventricular arrhythmias, 27 3-month-old spontaneously hypertensive rats were treated with enalapril (10 mg/kg) daily for 11 months and compared with 26 untreated control rats. Systolic arterial pressure was significantly decreased in treated rats, and at the end of the experiment, it was 199 +/- 3 mm Hg (treated) versus 237 +/- 3 mm Hg (controls) (p less than 0.001). At this time, spontaneous arrhythmias and induced arrhythmias either by programmed electrical stimulation (train of stimuli +1 or 2 extrastimuli) or by trains of eight stimuli at decreasing coupling intervals were observed in isolated heart preparations. Comparing enalapril-treated and control rats, spontaneous arrhythmias (9 of 27 versus 20 of 26, respectively; p less than 0.01), programmed stimulation-induced arrhythmias (3 of 26 versus 12 of 23, respectively; p less than 0.01), and trains of stimuli-induced arrhythmias (4 of 26 versus ...
Background-Genetic predisposition to life-threatening cardiac arrhythmias such as in congenital long-QT syndrome (LQTS) and catecholaminergic polymorphic ventricular tachycardia (CPVT) represent treatable causes of sudden cardiac death in young adults and children. Recently, mutations in calmodulin (CALM1, CALM2) have been associated with severe forms of LQTS and CPVT, with life-threatening arrhythmias occurring very early in life. Additional mutation-positive cases are needed to discern genotype-phenotype correlations associated with calmodulin mutations. Methods and Results-We employed conventional and next-generation sequencing approaches including exome analysis in genotype-negative LQTS probands. We identified five novel de novo missense mutations in CALM2 in three subjects with LQTS (p.N98S, p.N98I, p.D134H) and two subjects with clinical features of both LQTS and CPVT (p.D132E, p.Q136P). Age of onset of major symptoms (syncope or cardiac arrest) ranged from 1-9 years. Three of five ...
Objectives Our previous study shows that Microvolt T-wave alternans (MTWA) testing has significant value for the prediction of mortality or severe arrhythmic events in a population of individuals with implanted ICDs. Whether MTWA is an accurate predictor of ventricular tachyarrhythmic events in patients without ICDs remains unclear. We conducted a meta-analysis of the predictive value of MTWA testing for mortality and severe arrhythmic events in patients with cardiac dysfunction but without implanted ICDs.. ...
Preliminary evidence supports an association between OSA and cardiac dysrhythmias. Negative intrathoracic pressure, as occurring during OSA, may provoke cardiac dysrhythmias. Thus, we aimed to study the acute effects of simulated apnea and hypopnea on arrhythmic potential and measures of cardiac
DESCRIPTION (provided by applicant): Implantable cardioverter defibrillators (ICDs) are medical devices proven to prevent sudden cardiac death due to ventricular arrhythmias. Their decisions are based solely upon the intra--?cardiac ECG. This is incomplete information since up to 1/3 of patients experience an inappropriate shock within the first 1-3 years of receiving the implant. Receiving a shock is associated with increased mortality as well as emotional trauma. In contrast, physicians determine whether to shock or medically convert a patient out of a rapid rhythm by determining if the arrhythmia is hemodynamically unstable or stable. An unstable arrhythmia is identified by decreased forward stroke volume (SV) and resultant low blood pressure (BP). A stable arrhythmia is identified by a forward SV or resultant BP close to the patients baseline. It would be ideal to have beat?by-beat SV available to the generator to assist in the determination of hemodynamic stability. Our group has developed ...
Clinical CharacteristicsThe Students t-test was used to compare the age, sex, height and weight, and initial blood pressure, heart rate, respiratory rate,
Cardiac arrhythmias are becoming one of the major health care problem in the world, causing numerous serious disease conditions including stroke and sudden cardiac death. Furthermore, cardiac arrhythmias are intimately related to the signaling ability of cardiac cells, and are caused by signaling defects. Consequently, modeling the electrical activity of the heart, and the complex signaling models that subtend dangerous arrhythmias such as tachycardia and fibrillation, necessitates a quantitative model of action potential (AP) propagation. Yet, many electrophysiological models, which accurately reproduce dynamical characteristic of the action potential in cells, have been introduced. However, these models are very complex and are very time consuming computationally. Consequently, a large amount of research is consecrated to design models with less computational complexity. This paper is presenting a new model for analyzing the propagation of ionic concentrations and electrical potential in space and
TY - JOUR. T1 - Pleiotropic Effects of Myocardial MMP-9 Inhibition to Prevent Ventricular Arrhythmia. AU - Weng, Ching Hui. AU - Chung, Fa Po. AU - Chen, Yao Chang. AU - Lin, Shien Fong. AU - Huang, Po Hsun. AU - Kuo, Terry B J. AU - Hsu, Wei Hsuan. AU - Su, Cheng Wen. AU - Sung, Yen Ling. AU - Lin, Yenn Jiang. AU - Chang, Shih Lin. AU - Chou, Li Wei. AU - Yeh, Hung I.. AU - Chen, Yi-Jen. AU - Hong, Yi Ren. AU - Chen, Shih Ann. AU - Hu, Yu Feng. PY - 2016/12/14. Y1 - 2016/12/14. N2 - Observational studies have established a strong association between matrix metalloproteinase-9 (MMP-9) and ventricular arrhythmia. However, whether MMP-9 has a causal link to ventricular arrhythmia, as well as the underlying mechanism, remains unclear. Here, we investigated the mechanistic involvement of myocardial MMP-9 in the pathophysiology of ventricular arrhythmia. Increased levels of myocardial MMP-9 are linked to ventricular arrhythmia attacks after angiotensin II (Ang II) treatment. MMP-9-deficient mice were ...
Abstract: Recently, arrhythmogenic condition has attracted special attention of scientists in the field of different disciplines because sudden cardiac death is often caused by cardiac arrhythmia. Arrhythmias can have different underlying causes. But the underlying mechanism of arrhythmia is not fully understood due to cardiac complexity. As is well known, one particular group of arrhythmias is often associated with the afterdepolarizations. So far, afterdepolarizations have been studied mainly in isolated cardiac cells. The question how the afterdepolarization is produced at a tissue level has not been widely studied yet. In this paper, we use the model of human heart to study how spiral wave or other wave patterns induces the afterdepolarizations in two-dimensional myocardial tissue. We try to obtain the instantaneous spatial distribution of afterdepolarizations by changing the L-type calcium and fast potassium conductance. In order to avoid bringing in afterdepolarizations, the applied ...
Medications can be effective in treating Arrhythmias (Heart Rhythm Disturbances). Understand drugs and medical procedures for Arrhythmias (Heart Rhythm Disturbances), see research evidence, and discover other smart treatments for Arrhythmias (Heart Rhythm Disturbances) at FoundHealth.
Causes of Arrhythmias (Heart Rhythm Disturbances) can depend on each individual situation. Learn about causes of Arrhythmias (Heart Rhythm Disturbances) and find symptoms, diagnosis, and many types of smart treatments for Arrhythmias (Heart Rhythm Disturbances) at FoundHealth.
Fingerprint Dive into the research topics of Effect of brief hypoxia on reperfusion arrhythmias and release of Ca,sup,2+,/sup, by rat heart homogenate blocked by ryanodine. Together they form a unique fingerprint. ...
Sudden cardiac death (SCD) is responsible for 300,000-450,000 deaths per year in the United States. While it is well known that patients with both ischemic and non-ischemic cardiomyopathy (ICM, NICM) are at increased risk for SCD, there is little beyond ejection fraction which has proven useful as a noninvasive predictor to risk stratify these patients.. Myocardial scar has been validated as an arrhythmic substrate in ischemic populations; the majority of successful ablations for lethal ventricular arrhythmias are performed on tissues in peri-infarct regions. Scar provides an anatomic electrical boundary where peri-infarct zones may lead to areas of slow conduction due to the disruption of inter-myocyte electrical conduction.. Myocardial scar is a less organized collagen deposition which disrupts the typical cardiac extracellular matrix. The collagen matrix provides mechanical support to the myocardium dictating ventricular shape, size and stiffness. While typically relatively dormant, the ...
Sudden cardiac death (SCD) is responsible for 300,000-450,000 deaths per year in the United States. While it is well known that patients with both ischemic and non-ischemic cardiomyopathy (ICM, NICM) are at increased risk for SCD, there is little beyond ejection fraction which has proven useful as a noninvasive predictor to risk stratify these patients.. Myocardial scar has been validated as an arrhythmic substrate in ischemic populations; the majority of successful ablations for lethal ventricular arrhythmias are performed on tissues in peri-infarct regions. Scar provides an anatomic electrical boundary where peri-infarct zones may lead to areas of slow conduction due to the disruption of inter-myocyte electrical conduction.. Myocardial scar is a less organized collagen deposition which disrupts the typical cardiac extracellular matrix. The collagen matrix provides mechanical support to the myocardium dictating ventricular shape, size and stiffness. While typically relatively dormant, the ...
Sudden cardiac arrest (SCA) from ventricular arrhythmias affects over 400,000 individuals/year in the U.S. alone and has a dismal survival rate (1). Although reduced left ventricular systolic function (i.e., left ventricular ejection fraction) (2) and symptomatic heart failure (i.e., congestive heart failure) (3) are the major predictors of risk for SCA, they are more sensitive than they are specific. Thus, their primacy in guidelines for implantable cardioverter-defibrillators (ICDs) might lead to potentially unnecessary implantations (1). This motivates the identification of markers for the pathophysiology of ventricular arrhythmias that can improve indices for ICD insertion.. Several candidates exist. Inducing sustained ventricular arrhythmias at electrophysiologic study (EPS) was historically the gold standard but has become tarnished of late. Certainly, SCA is more frequent in ischemic cardiomyopathy patients with positive EPS, yet those with negative EPS still have a substantial arrhythmic ...
Arrhythmia. National Heart, Lung, and Blood Institute website. Available at: https://www.nhlbi.nih.gov/health-topics/arrhythmia. Accessed January 4, 2019.. Atrial fibrillation. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T115288/Atrial-fibrillation. Updated August 22, 2018. Accessed January 4, 2019.. Atrial flutter. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T115251/Atrial-flutter. Updated February 22, 2017. Accessed January 4, 2019.. Atrioventricular (AV) conduction disorders. EBSCO DynaMed Plus website. Available at:http://www.dynamed.com/topics/dmp~AN~T907302/Atrioventricular-AV-conduction-disorders. Updated November 27, 2017. Accessed January 4, 2019.. Understanding your risk for arrhythmia. American Heart Association website. Available at: https://www.heart.org/en/health-topics/arrhythmia/understand-your-risk-for-arrhythmia. Accessed January 4, 2019.. Ventricular arrhythmias. EBSCO DynaMed Plus website. Available ...
Diagnosing arrhythmia can be quite difficult because the medical condition may sometimes produce few symptoms. Many physicians diagnose an arrhythmia by examining the patients medical and family history and by performing physical examinations. To diagnose an arrhythmia, physicians usually ask patients to describe their symptoms. A physician may ask the patient if he or she feels thumping in his or her chest and whether the patient feels dizzy or lightheaded. A physician may also diagnose an arrhythmia by asking a patient if his or her family has a history of arrhythmia or other heart diseases. The doctor may ask the patient if he or she is under medications including over the counter medicines and supplements. A physical exam can also serve as an important diagnostic procedure for arrhythmia. During the physical exam, the doctor will examine the patients heart rate and rhythm, and the pulse to see if they are regular. He or she will also check for swelling in the legs or swelling in the feet, ...
Radiofreqeuncy Ablation therapy for arrhythmias caused by myocardial scar. Ablation Therapy for Arrhythmias and Cardiac Arrhythmias. Read about Ablation Therapy for Arrhythmias
Define Arrhythmias. Arrhythmias synonyms, Arrhythmias pronunciation, Arrhythmias translation, English dictionary definition of Arrhythmias. n. 1. An irregularity in the force or rhythm of the heartbeat: a fatal arrhythmia. 2. A condition characterized by such irregularities: treatments for...
The rate at which the heart beats is measured in beats per minute (or bpm) and is generally calculated over several RR intervals. The normal rate in an adult is between 50 and 120 bpm. However, it is natural for a healthy heart to beat at rates outside of this range when resting, exercising, or in response to other external factors and emotions.. Alterations in heart rhythm, arrhythmias, are heartbeats that are irregular, too fast, too slow, or conducted via an abnormal electrical pathway through the heart.. In common usage, the term dysrhythmia is synonymous with arrhythmia, although in the strictest sense, arrhythmia is the absence of cardiac rhythm and dysrhythmia is an abnormal cardiac rhythm.. The term bradyarrhythmia is used to define abnormally slow rhythms, either regular or irregular, or a slow ventricular response due to heart block.. Tachyarrhythmia describes arrhythmia characterised by a rapid irregular heartbeat.. Rhythms and arrhythmia are further classified by the site of the ...
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Ing Cardiac arrhythmia (mayayaus mu rin dysrhythmia) metung yang kataya kareng maragul at metung a lupang lupung a kabilyan nung nu atin epangkaraniwan ing kuryenting pangimut ning pusu. Ing pitig ning pusu malyaring mabilis ya o mabagal at neng misan ustu ya neng misan ali ya. Deng aliwang arrhythmias maliaring ikakamate dala at dapat idala da la keng medical emergencies at maliaring mikacardiac arrest la ampong biglaan ing pangamate da. Deng aliwa bala ra makabuysit mung symptomas. Deng aliwa naman makataid keng amanang at makamatengstroke o embolus. Deng aliwang arrhythmias maina la mu pinduan at maliari lang sabian a normal la. Ing tutu,deng aliwang tau panamdaman dang neng misan ing karelang pusu luksa ya keng kayang pitig, o neng misan naman mika masikan yang pitig nung nu dapat e dinan pagkabalisa.[1]. Ing katayang sinus arrhythmia daleraya ya keng pangkaraniwan a melayari nung nu bagyabagya ing pusu sinikad yang pasikan ampong pamangaina patse mangisnawang palub ampong palual. Keraklan ...
10.1055/b-0035-121513 18 Cardiac Arrhythmias 18.1 Antiarrhythmic Drugs 18.1.1 Basics Antiarrhythmic drugs play a central role in the treatment of cardiac arrhythmias in childhood. But their use must be weighed critically. There are numerous studies in adults showing that class I antiarrhythmic drugs do not reduce mortality, but even increase it in patients with ventricular tachycardia…
Looking for atrial arrhythmia? Find out information about atrial arrhythmia. disturbance in the rate or rhythm of the heartbeat. Various arrhythmias can be symptoms of serious heart heart, muscular organ that pumps blood to all parts... Explanation of atrial arrhythmia
Our data suggest that global and regional arrhythmia substrates change throughout different phases of resuscitation, and that temperature alters substrates differently throughout the phases of resuscitation. At normal temperatures, LAD occlusion increases VEBs, global DOR, and cardiac alternans. TH decreases VEBs, yet increases global DOR, and similarly promotes cardiac alternans. During this phase, temperature does not alter the end result of increased incidence of VT/VF. After ROSC from VF arrest, but still during LAD occlusion, there remains an increase in VEBs and cardiac alternans in CT, whereas global DOR returns to baseline. TH reduces VEBs, the increase in global DOR is no longer seen, and cardiac alternans is similarly increased. Again, the incidence of VT/VF is similarly increased in CT and TH. During LAD reperfusion, the incidence of VEBs and alternans in the CT group is greater than baseline, but global DOR returns to near baseline levels. TH markedly increases the magnitude of ...
Arrhythmia occurs when the hearts rhythm becomes disturbed or arrhythmic. The most common form of arrhythmia is a heart palpitation, known as sinus arrhythmia. More serious forms of heart arrhythmia include atrial fibrillation, ventricular tachycardia and ventricular fibrillation. Arrhythmia requires medical treatment; some rhythm disturbances are addressed through the use of medications, defibrillation, or a pacemaker. Natural options for heart support include fish oil, hawthorn, vitamin C and magnesium.
MedWorm- Cardiac Arrhythmia comments, Description: MedWorm.com provides a medical RSS filtering service. Thousands of medical RSS feeds are combined and output via different filters. This feed contains the latest news in Cardiac Arrhythmia, ID: 284341, By: Feedage Forager
12-lead electrocardiogram is a vital component of electrophysiology workup for symptomatic palpitations and organic cardiac arrhythmias including supraventricular and ventricular arrhythmias.
This rare disease is characterized by episodic weakness, cardiac arrhythmias, and dysmorphic features (short stature, scoliosis, clinodactyly, hypertelorism, small or prominent low-set ears, micrognathia, and broad forehead). The cardiac arrhythmias are potentially serious and life threatening. They include long QT, ventricular ectopy, bidirectional ventricular arrhythmias, and tachycardia. For many years, the classification of this disorder was uncertain because episodes of weakness are associated with elevated, normal, or reduced levels of potassium during an attack. In addition, the potassium levels differ among kindreds but are consistent within a family. Inheritance is autosomal dominant, with incomplete penetrance and variable expressivity. The disease is caused by mutations of the inwardly rectifying potassium channel (Kir 2.1) gene that heighten muscle cell excitability. The treatment is similar to that for other forms of periodic paralysis and must include cardiac monitoring. The ...
This course covers cardiac electrical activity and the interpretation of electrocardiograms. The student echocardiographer develops skill in recognizing normal sinus rhythm versus atypical cardiac rhythms. Students learn to interpret common cardiac dysrhythmias, including sinus, atrial, junctional, and ventricular, and integrate this skill into the daily practice of echocardiography. The students will know the stress echo lab procedures including monitoring the patient. Students will learn to perform auscultation of the heart and lungs. Prerequisite: Acceptance into program, completion of DUTEC 155.. View details for DUTEC 200 ...
This course covers cardiac electrical activity and the interpretation of electrocardiograms. The student echocardiographer develops skill in recognizing normal sinus rhythm versus atypical cardiac rhythms. Students learn to interpret common cardiac dysrhythmias, including sinus, atrial, junctional, and ventricular, and integrate this skill into the daily practice of echocardiography. The students will know the stress echo lab procedures including monitoring the patient. Students will learn to perform auscultation of the heart and lungs. Prerequisite: Acceptance into program, completion of DUTEC 155.. View details for DUTEC 200 ...
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Palpitations (a perception of abnormal heartbeats) are a common complaint associated with abnormal heart rhythms. Fatigue, fainting, decreased stamina, shortness of breath and chest pain can also be associated with arrhythmias. Many young patients with arrhythmia have been misdiagnosed with anxiety or panic attacks for years.. How are arrhythmias diagnosed? How are they treated?. An arrhythmia is diagnosed by recording an abnormal heart rhythm with an electrocardiogram (EKG) or another form of heart monitor. Long-term or even implantable monitors are sometimes needed to catch infrequent arrhythmias. Treatment options can vary from lifestyle changes all the way up to heart surgery and other procedures. Many medications can also be used. Rhythm drugs- antiarrhythmics, should be used only under the supervision of a cardiologist because of their potential harm if improperly prescribed.. ...
An arrhythmia is a change in the rhythm of your heartbeat. When the heart beats too fast, its called tachycardia. When it beats too slow, its called bradycardia. An arrhythmia can also mean that your heart beats irregularly (skips a beat or has an extra beat). At some time or another, most people have felt their heart race or skip a beat.. Minor arrhythmias may be caused by excessive alcohol use, smoking, caffeine, stress or exercise. They usually are not a cause for alarm. Arrhythmias that occur more often or cause symptoms may be more serious and need to be discussed with your doctor.. ...
Cardiac arrhythmia is any of a large and heterogeneous group of conditions in which there is abnormal electrical activity in the heart. The heart beat may be too fast or too slow, and may be regular or irregular. A heart beat that is too fast is called tachycardia and a heart beat that is too slow is called bradycardia. Although many arrhythmias are not life-threatening, some can cause cardiac arrest. ...
Cardiac muscle excitation is the result of ion fluxes through cellular membrane channels. Any alterations in channel proteins that produce abnormal ionic fluxes will change the cardiac action potential and the pattern of electrical firing within the heart. The idiopathic long QT syndrome (LQTS) is an inherited cardiac pathology localized to mutated genes encoding for myocardial, voltage-activated sodium and potassium ion channels. The expression of abnormal sodium and potassium channels results in aberrant ionic fluxes that produce a prolonged ventricular repolarization. This prolonged time to repolarization is the electrophysiologic basis for prolongation of the QT interval. Individuals with LQTS are at significant risk for developing lethal ventricular dysrhythmias due to an abnormal pattern of cardiac excitation. Identification of a genetic basis for LQTS has had significant implications for genetic counseling, the development of effective antidysrhythmic drug therapies, and nursing ...
Mortality owing to iatrogenic hypoglycemia represents a major concern for insulin-treated diabetic patients and their families. Determining the mechanisms by which hypoglycemia causes sudden death is critically important in order to find treatment strategies that could protect at-risk patients. Based on ECG anomalies reported during moderate hypoglycemia (26), it has been speculated that the dead in bed syndrome may be mediated by hypoglycemia-induced fatal arrhythmias. In the current study, it is shown for the first time that fatal cardiac arrhythmias occur during severe hypoglycemia and can be reduced by ICV glucose infusion and prevented by β-adrenergic blockade, indicating that brain neuroglycopenia and the striking sympathoadrenal response mediate fatal cardiac arrhythmias during severe hypoglycemia (Fig. 7A).. In these experiments, diabetes per se nearly doubled the mortality risk associated with severe hypoglycemia. Uncontrolled diabetes is hypothesized to increase risk of fatal ...
Mortality owing to iatrogenic hypoglycemia represents a major concern for insulin-treated diabetic patients and their families. Determining the mechanisms by which hypoglycemia causes sudden death is critically important in order to find treatment strategies that could protect at-risk patients. Based on ECG anomalies reported during moderate hypoglycemia (26), it has been speculated that the dead in bed syndrome may be mediated by hypoglycemia-induced fatal arrhythmias. In the current study, it is shown for the first time that fatal cardiac arrhythmias occur during severe hypoglycemia and can be reduced by ICV glucose infusion and prevented by β-adrenergic blockade, indicating that brain neuroglycopenia and the striking sympathoadrenal response mediate fatal cardiac arrhythmias during severe hypoglycemia (Fig. 7A).. In these experiments, diabetes per se nearly doubled the mortality risk associated with severe hypoglycemia. Uncontrolled diabetes is hypothesized to increase risk of fatal ...
Causes of Sads - Sudden arrhythmic death syndrome - conditions responsible for SADS cause a cardiac arrest by bringing on a disturbance in the hearts rhythm, even though there is no structural heart disease
SADS UK - Preventing loss of life from Sudden Arrhythmic Death Syndrome (SADS) and highlighting cardiac risk in the young through to middle age.
Respiratory sinus arrhythmia is not considered a major health concern. However, other arrhythmias can sometimes indicate heart disease.. An older person with a severe arrhythmia may require a pacemaker. People with sleep apnea are also more likely to experience arrhythmias, including respiratory sinus arrhythmia.. Cases of respiratory sinus arrhythmia in children and young people will often improve without treatment, as someone ages. This is because a childs heart is still growing and developing and changes to the heart can lead to respiratory sinus arrhythmia.. If a child has a respiratory sinus arrhythmia, a doctor may wish to monitor it but will probably not offer any treatment unless the problem becomes severe, causes symptoms, or continues into adolescence.. However, cases in older people are more unusual and may require further examination. If respiratory sinus arrhythmia is caused by an underlying heart disease, then that will need to be treated separately.. ...
TY - JOUR. T1 - Coxsackie and adenovirus receptor is a modifier of cardiac conduction and arrhythmia vulnerability in the setting of myocardial ischemia. AU - Marsman, Roos F J. AU - Bezzina, Connie R.. AU - Freiberg, Fabian. AU - Verkerk, Arie O.. AU - Adriaens, Michiel E.. AU - Podliesna, Svitlana. AU - Chen, Chen. AU - Purfürst, Bettina. AU - Spallek, Bastian. AU - Koopmann, Tamara T.. AU - Baczko, Istvan. AU - Dos Remedios, Cristobal G.. AU - George, Alfred L.. AU - Bishopric, Nanette. AU - Lodder, Elisabeth M.. AU - De Bakker, Jacques M T. AU - Fischer, Robert. AU - Coronel, Ruben. AU - Wilde, Arthur A M. AU - Gotthardt, Michael. AU - Remme, Carol Ann. PY - 2014/2/18. Y1 - 2014/2/18. N2 - Objectives The aim of this study was to investigate the modulatory effect of the coxsackie and adenovirus receptor (CAR) on ventricular conduction and arrhythmia vulnerability in the setting of myocardial ischemia. Background A heritable component in the risk of ventricular fibrillation during myocardial ...
Its arrhythmia week on The Rounds Table! Should heart failure patients give up a caffeine jolt in the morning? How can we better identify appropriate patients for ICDs? Paxton Bach, fellow in General Internal Medicine at UBC, joins Kieran to discuss two exciting studies:. Studies that inform practice toward the best medical treatments are of utmost importance. But, arguably, studies that inform day to day lifestyle choice are those that provide real meaning to patients. For example, does a patient with a heart condition need to give up coffee? Kieran and Paxton discuss a study which examines whether, in patients with decreased ejection fraction, caffeine increases cardiac arrhythmias.. Next, Kieran takes listeners through the DANISH trial. The benefit of an implantable cardioverter-defibrillator (ICD) in patients with symptomatic systolic heart failure caused by ischemic heart disease has been well documented. However, before the DANISH trial, the evidence for implantation of an ICD for primary ...
Free, official info about 2015 ICD-9-CM diagnosis code 427.8. Includes coding notes, detailed descriptions, index cross-references and ICD-10-CM conversion info.
Anxiety and arrhythmia is not a one way street. Arrhythmia can also cause significant anxiety. Many things can lead to benign (not dangerous) arrhythmia, including exercise, dehydration, diet/caffeine, etc. Also, those that suffer from very minor stress or those that are thinking about their heart too often may be more prone to arrhythmia - even when theyre not suffering from anxiety at the time.. Unfortunately, those with anxiety are highly prone to suffering from extreme anxiety and panic attacks when an arrhythmia occurs as they worry about the health of their heart. After suffering from an arrhythmia, many with anxiety are also more prone to worrying about the arrhythmia again, thus causing further anxiety and greater risk of arrhythmia.. As you can see, it can create a very troubling cycle that can make it harder and hard to cope. Often arrhythmia is one of the primary reasons that an individuals anxiety starts to get out of hand.. ...
Ventricular arrhythmias are abnormal rapid heart rhythms, including ventricular tachycardia and ventricular fibrillation. Learn more about ventricular arrhythmias here at Ohio State.
The use of conductive polymer composites (CPCs) as strain sensors has been widely investigated. A wide range of strain sensitivities and high repeatability are vital for different applications of CPCs. In this study, the relations of the conductive filler network and the strain-sensing behavior and electrical stability under fatigue cycles were studied systematically for the first time based on the conductive polymethylvinylsiloxane (PMVS) composites filled with both carbon nanotubes arrays (CNTAs) and carbon black (CB). It was proved that the composites could be fabricated with large strain-sensing capability and a wide range of strain sensitivities by controlling the volume ratio of CNTA/CB and their amounts. Additionally, the CNTA/CB/PMVS composite with 3 vol % content of fillers showed high sensitivity (GF is 10 at 60% strain), high repeatability (the relative standard deviation (RSD) of the max R/R0 value is 3.58%), and electrical stability under fatigue cycles (value range of R/R0 is 1.62 to 1.82)
Background: Air pollution has been associated with cardiac events, including sudden cardiac death. However, the temporal association for acute events is not clear. In this prospective study we follow patients with implantable cardioverter defibrillators (ICDs) to assess the acute effects of air pollution on ventricular arrhythmias.. Methods: Subjects were recruited from Tufts Medical Center Arrhythmia Clinic between September 2006 and March 2010. Inclusion criteria included prior implantation of a dual chamber ICD and residential zip codes within a 50-kilometer radius of the Harvard Supersite air quality monitoring station. Arrhythmias documented by the ICD were reviewed and interpreted by an electrophysiologist blinded to air quality. The correlations of sustained ventricular arrhythmias (defined as those necessitating treatment by the ICD) with air pollution, including PM2.5, black carbon (BC), sulfate, particle number, NO2, SO2, and O3 were assessed utilizing a case-crossover ...
There are a number of conditions that can contribute to cardiac arrhythmias in mesothelioma patients. Arrhythmias are rapid atypical heartbeats which lose the characteristic patterns observed in the normal electrocardiogram (EKG). In mesothelioma, primary cardiac tumors of the heart (pericardial mesothelioma) or in most cases the spread of mesothelioma to the cardiac silhouette, can be responsible for arrhythmias. The AV (atrial ventricular) node is composed of specialized tissues located between the atrium and ventricle. The purpose of the av node is to set cardiac rhythm. When malignancy impinges upon these tissues, arrhythmias can develop. Common presenting symptoms are similar to those of congestive heart failure: cardiac and pleural effusions, shortness of breath and extreme fatigue. Pulse will be irregular and in most cases rapid, greater than 100 beats per minute.. Surgery and the formation of scar tissue can damage this sensitive tissue following and EPP or PD. These complications are ...
Background: Cardiac arrhythmias are any abnormality or disruption of the normal activation sequence of the myocardium in the heart. Atrial fibrillation (AF) is the most common type of cardiac arrhythmia and is associated with increased mortality and morbidity. Patients with cardiac arrhythmias have a decreased quality of life (QoL) and an increased psychosocial burden. Yoga has demonstrated to be an effective tool in reducing blood pressure in patients with hypertension, reducing symptoms of depression, anxiety, and increasing QoL. Yoga as a treatment for patients with cardiac arrhythmias has yet to be investigated fully. Will yoga decrease the amount of cardiac arrhythmias in arrhythmia-prone individuals? Methods: An exhaustive search of available medical literature was performed using Medline-OVID, CINAHL, PubMed, and Web of Science using the keywords:
Cambridge Heart develops and commercializes non-invasive diagnostic tests for cardiac disease, with a focus on identifying those at risk for sudden cardiac arrest (SCA). The Company?s products incorporate proprietary Microvolt T-Wave Alternans measurement technologies including the patented Analytic Spectral Method? and ultrasensitive disposable electrode sensors. Medicare reimburses the Analytic Spectral Method? under its National Coverage Policy. Cambridge Heart, founded in 1990, is based in Tewksbury, MA. The company?s Microvolt T-Wave Alternans? (MTWA) test, developed by Cambridge Heart (OTCBB: CAMH), is based on research originally conducted at the Massachusetts Institute of Technology. http://www.cambridgeheart.com,http://www.cambridgeheart.com/, .. Statements contained in this press release are forward-looking statements for purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995. In some cases, we use words such as ?believes?, ?expects?, ...
BVT is an infrequent arrhythmia that has nevertheless mesmerized electrophysiologists for many years. It is most commonly observed under conditions of digitalis intoxication and in advanced heart disease.22 On ECG, BVT is manifested as an alternation in the polarity of the QRS axis in some of the leads; the remaining leads may demonstrate changes in morphology.22 The tachycardia is often regular, occurs in brief salvoes, and often resolves spontaneously or may degenerate into PVT or VF. The alternating pattern is usually associated with bundle branch block morphology in the precordial leads, with the alternating QRS complexes differing from each other in amplitude and duration. Since its first description in 1922,23 several hypotheses have been postulated for the mechanism of BVT, including enhanced automaticity with the existence of 2 separate ventricular foci22,24 or even reentry.22 More recently, the demonstration of RyR2 gain-of-function mutations in patients with familial CPVT has led to ...
HearTwave II Microvolt T-Wave Alternans System With Analytic Spectral Method,The HearTwave II system is the Cambridge Heart next generation Microvolt T-Wave Alternans (MTWA) testing platform which simplifies hospital and office-based sudden cardiac death risk stratification. This new system offers expanded versatility as it can be configured to perform MTWA and/or standard,medicine,medical supply,medical supplies,medical product
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 ...
TY - JOUR. T1 - Ventricular arrhythmia risk after subarachnoid hemorrhage. AU - Michael Frangiskakis, J.. AU - Hravnak, Marilyn. AU - Crago, Elizabeth A.. AU - Tanabe, Masaki. AU - Kip, Kevin E.. AU - Gorcsan, John. AU - Horowitz, Michael B.. AU - Kassam, Amin B.. AU - London, Barry. N1 - Funding Information: Acknowledgments We wish to thank Drs. Dennis M. McNamara, Yue Fang Chang, and Indrani Halder for their assistance and thoughtful insights. This work was supported by AHA 0725482U (JMF), NIH 1 R01 HL 077398 (BL), and NIH 5 R01 HL 074316 (EAC, MH, MBH, ABK).. PY - 2009/6. Y1 - 2009/6. N2 - Introduction: Cardiac morbidity and mortality after aneurysmal subarachnoid hemorrhage (SAH) are attributable to myocardial injury, decreased ventricular function, and ventricular arrhythmia (VA). Our objective was to test the relationships between QTc prolongation, VA, and survival after SAH. Methods: In 200 subjects with acute aneurysmal SAH, electrocardiograms, echocardiograms, and telemetry were ...
Electrocardiography and Dysrhythmia Monitoring Unit 4 chapter 32 Nursing Care of Clients with Cardiovascular Disorders SectionDiagnostic and Therapeutic Procedures Chapter 32 Electrocardiography and Dysrhythmia Monitoring Overview в-Џв-Џ Cardiac electrical activity can be monitored by using an ECG. The heart’s electrical activity can be monitored by a standard 12-lead ECG (resting ECG), ambulatory ECG (Holter monitoring), continuous cardiac monitoring, or by telemetry. View Media Supplement: в-Џв-Џ в-Џв-Џ ECG Strip (Image) Cardiac dysrhythmias are heartbeat disturbances (beat formation, beat conduction, or myocardial response to beat). Nurses should be familiar with cardioversion and defibrillation procedures for treating dysrhythmias. Electrocardiography в-Џв-Џ Electrocardiography uses an electrocardiograph to record the electrical activity of the heart over time. The electrocardiograph is connected by wires (leads) to skin electrodes placed on the chest and limbs of a ...
Health,...AUSTIN Texas May 11 /- The Texas Cardiac Arrhythmia Ins... ... In just one year the physician team at the Texas Cardiac Arrhythmia ... ...,Texas,Cardiac,Arrhythmia,Institute,at,St.,Davids,Medical,Center,Celebrates,Successful,First,Year,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
PMARP : Sudden cardiac death (SCD) is estimated to occur at an incidence of between 50 to 100 per 100,000 individuals in North America and Europe each year, claiming between 250,000 and 450,000 lives in the United States annually. In younger individuals (ages 15-35), the incidence of SCD is between 1 to 2 per 100,000 young individuals. The reported incidence of SCD is likely an underestimate since more overt causes of death, such as car accidents and drownings, may result from arrhythmogenic events. In cases of sudden unexplained death where autopsy does not detect a structural basis for sudden death, a hereditary arrhythmia may be suspected. Brugada syndrome (BrS) and long QT syndrome (LQTS) are inherited forms of cardiac arrhythmia that may cause sudden cardiac death. Postmortem diagnosis of a hereditary arrhythmia may assist in confirmation of the cause and manner of death, as well as risk assessment in living family members.   BrS is a genetic cardiac disorder characterized by ST segment
The 2016 Report on Holter Monitoring (Ambulatory Electrocardiography) Systems: World Market Segmentation by City The 2016 Report on Holter Monitoring (Ambulatory Electrocardiography) Systems: World Market - Market research report and industry analysis - 9137878
In this nationwide cohort study of US veterans, compared with amoxicillin, we found that a short-course of azithromycin therapy was associated with statistically significant hazard ratios of 1.47 for mortality risks and 1.77 serious arrhythmias risks within the first 5 days of treatment. The risk of these events was not significantly increased for days 6 to 10. Treatment with levofloxacin, also when compared with amoxicillin, had statistically significant hazard ratios of 2.49 for mortality risk and 2.43 for serious arrhythmia risk; however, the increased risk with levofloxacin continued to be statistically significant during days 6 to 10. These 2 findings, when taken in context of the traditional duration of drug treatment and the most common duration of antibiotic dispensed in our cohort, support the hypothesis of short-term increased risk during the dispensation cycle of the drug, ie, for azithromycin 5 days, for levofloxacin at least 10 days when compared with amoxicillin.. Our study ...
Andersen-Tawil syndrome (ATS) is a rare autosomal dominant channelopathy characterized by periodic paralysis, cardiac dysrhythmias, and distinct facial and skeletal characteristics, that may be variably present in the affected members. Mutations in the KCNJ2 and KCNJ5 gene have been associated with this disorder. We describe a family in which several members presented with different ATS phenotypes. The proband, a 4-year-old boy, presented with recurrent episodes of muscle weakness from an early age; two siblings suffered cardiac arrhythmia but had never experienced episodes of paralysis; their mother reported occasional muscle pain after exercise and unspecified cardiac arrhythmias ...
Summary. The aim is to determine the additional possibilities of metabolic therapy with ethylmethylhydroxypyridine succinate in patients with coronary artery disease and heart rhythm disturbances. Object and research methods. The study included 30 patients with coronary heart disease and atrial and ventricular arrhythmias. Ethylmethylhydroxypyridine succinate (Mexicor, «Lekhim») was used at a dose of 400 mg intravenously drip for 10 days in addition to antiarrhythmic and standard therapy for coronary artery disease. All patients underwent: electrocardiography, echocardiography, Holter monitoring, a treadmill test, a flow-dependent vasodilation test, the subpopulation composition of blood monocytes and lymphocytes, the content of malondialdehyde and carboxyhemoglobin were studied. Results. The administration of ethylmethylhydroxypyridine succinate in patients with coronary artery disease and cardiac arrhythmias was accompanied by a significant decrease in the number of episodes of myocardial ...
Texas Cardiac Arrhythmia Institute at St. Davids Medical Center opening new Electrophysiology Center - AUSTIN, Texas-The Texas Cardiac Arrhythmia Institute (TCAI)...
Long term continuous monitoring of electrocardiogram (ECG) in a free living environment provides valuable information for prevention on the heart attack and other high risk diseases. This paper presents the design of a real-time wearable ECG monitoring system with associated cardiac arrhythmia classification algorithms. One of the striking advantages is that ECG analog front-end and on-node digital processing are designed to remove most of the noise and bias. In addition, the wearable sensor node is able to monitor the patients ECG and motion signal in an unobstructive way. To realize the real-time medical analysis, the ECG is digitalized and transmitted to a smart phone via Bluetooth. On the smart phone, the ECG waveform is visualized and a novel layered hidden Markov model is seamlessly integrated to classify multiple cardiac arrhythmias in real time. Experimental results demonstrate that the clean and reliable ECG waveform can be captured in multiple stressed conditions and the real-time
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Suzanne Lowrys son, Max, died suddenly on the eve of his wedding. A year on, his mother shares her sense of loss - and her hope that others may be spared the same fate
Gene therapy has progressed from a dream to a bedside reality in quite a few human diseases. From its first application in adenosine deaminase deficiency, through the years, its application has evolved to vascular angiogenesis and cardiac arrhythmias. Gene based biological pacemakers using viral vectors or mesenchymal cells tested in animal models hold much promise. Induction of pacemaker activity within the left bundle branch can provide stable heart rates. Genetic modification of the AV node mimicking beta blockade can be therapeutic in the management of atrial fibrillation. G protein overexpression to modify the AV node also is experimental. Modification and expression of potassium channel genes altering the delayed rectifier potassium currents may permit better management of congenital long QT syndromes. Arrhythmias in a failing heart are due to abnormal calcium cycling. Potential targets for genetic modulation include the sarcoplasmic reticulum calcium pump, calsequestrin and sodium calcium ...
Gene therapy has progressed from a dream to a bedside reality in quite a few human diseases. From its first application in adenosine deaminase deficiency, through the years, its application has evolved to vascular angiogenesis and cardiac arrhythmias. Gene based biological pacemakers using viral vectors or mesenchymal cells tested in animal models hold much promise. Induction of pacemaker activity within the left bundle branch can provide stable heart rates. Genetic modification of the AV node mimicking beta blockade can be therapeutic in the management of atrial fibrillation. G protein overexpression to modify the AV node also is experimental. Modification and expression of potassium channel genes altering the delayed rectifier potassium currents may permit better management of congenital long QT syndromes. Arrhythmias in a failing heart are due to abnormal calcium cycling. Potential targets for genetic modulation include the sarcoplasmic reticulum calcium pump, calsequestrin and sodium calcium ...
A cardiac arrhythmia happens when your heart is beating (or contracting) in an irregular pattern. At one time or another, youve probably learned to place your fingers gently against your carotid artery in your neck to feel your pulse or heart beating. Usually, you can feel a steady pattern of beats as you count. But if you have an arrhythmia, the pulse or rhythm of your heart may be unpredictable or too fast or too slow.. There are many kinds of arrhythmias, but Id like to explain a very common and typically benign kind we often see patients for: premature heartbeats. Premature heartbeats are just that - a contraction that comes early and breaks the steady rhythm of the heart. It causes the succeeding heartbeat to be stronger, and its this beat (or beats) that people suddenly feel.. The sensation can be alarming. We get calls and see people for a variety of symptoms: they may feel just a single, occasional beat or a series of running beats. Usually, the beats come quickly and theyre gone, ...
Diagnosing heart arrhythmia In diagnosing an arrhythmia, a full physical will be performed with a complete blood analysis. The veterinarian will determine if an ECG or EKG are necessary. Blood work can establish whether a pet has anemia and can also detect whether the organs are working properly. An EKG can detect the arrhythmia, while an ECG can determine the type of arrhythmia. Chest X-rays might be necessary to determine if heart disease or heart failure has occurred. How is heart arrhythmia treated? After the veterinarian has obtained a positive diagnosis, they will discuss the various treatment options. Surgery and prescription medications are both available to your pet as possible therapies. Prescription medication - Several medications are available to help control arrhythmias, and the veterinarian will discuss which prescription is best for your pets age, gender, and breed. Surgery - There are two surgical options, both of which must be performed by a veterinary cardiology specialist. ...
RJ Patel, JM Walker, P Liu, B Xu, A Rodriguez, BW Spur, CE Hock. The Effect of Altering the Composition of Dietary Lipids on Arrhythmias and the Inflammatory Response Following Myocardial Ischemia/Reperfusion. J Am Osteopath Assoc 2004;104(1):10. doi: 10.7556/jaoa.2004.104.1.10.. Download citation file:. ...
After adjusting for several independent factors (demographics, cardiovascular risk factors, and comorbidities), patients with OSA had approximately twice the odds of having any cardiac arrhythmia (OR 1.91; CI 95% 1.27-3.11; p ,0.05).. DISCUSSION. Our study provides new information on the prevalence of arrhythmia in Arab patients with OSA. Moreover, OSA was an independent predictor of arrhythmias in our patients. In the literature, the reported incidence of arrhythmia in OSA patients ranges from 20% to 50%3. The explanation for this wide range includes the difference in arrhythmia definition, characteristics of the population or the sample studied (e.g., age), study design and sleep-disordered breathing (SDB) severity. The current study showed a prevalence of 26%, which is at the lower end of the range; however, the study group is relatively younger than studied samples in previous studies1,3,13,14. Our study revealed that patients with OSA had a significantly increased prevalence of PACs, PVCs, ...
After adjusting for several independent factors (demographics, cardiovascular risk factors, and comorbidities), patients with OSA had approximately twice the odds of having any cardiac arrhythmia (OR 1.91; CI 95% 1.27-3.11; p ,0.05).. DISCUSSION. Our study provides new information on the prevalence of arrhythmia in Arab patients with OSA. Moreover, OSA was an independent predictor of arrhythmias in our patients. In the literature, the reported incidence of arrhythmia in OSA patients ranges from 20% to 50%3. The explanation for this wide range includes the difference in arrhythmia definition, characteristics of the population or the sample studied (e.g., age), study design and sleep-disordered breathing (SDB) severity. The current study showed a prevalence of 26%, which is at the lower end of the range; however, the study group is relatively younger than studied samples in previous studies1,3,13,14. Our study revealed that patients with OSA had a significantly increased prevalence of PACs, PVCs, ...
TY - JOUR. T1 - Management of tachyarrhythmias in children. AU - McCammond, Amy N.. AU - Balaji, Seshadri. PY - 2012/10/1. Y1 - 2012/10/1. N2 - Management of tachycardia in children depends on the accurate characterization of the origin and mechanism of the rhythm, which can usually be achieved using noninvasive tests such as an electrocardiogram, Holter or cardiac event monitoring. Supraventricular tachycardia (SVT), the most common tachyarrhythmia in children, is most often due to an accessory pathway or dual AV nodal pathways. Adenosine and vagal maneuvers are useful to diagnose and terminate an acute event. Long-term management options include prophylactic drug therapy (aimed at suppressing the tachyarrhythmia) and catheter ablation. Ablation for SVT is highly successful with a low complication rate, and is first-line therapy in older patients. Ventricular arrhythmias are fortunately uncommon in children with normal hearts, and are seen primarily in the setting of abnormal myocardium and ...
Ventricular fibrillation (VF) is a life-threatening cardiac arrhythmia in which the coordinated contraction of the ventricular myocardium is replaced by high-frequency, disorganized excitation, resulting in failure of the heart to pump blood. VF is the most commonly identified arrhythmia in cardiac arrest patients.
An automated external defibrillator (AED) is a portable electronic device that automatically diagnoses the life-threatening cardiac arrhythmias of ventricular fibrillation and ventricular tachycardia in a patient, and is able to treat them through defibrillation, the application of electrical therapy which stops the arrhythmia, allowing the heart to re-establish an effective rhythm.
Cardiac arrhythmias are a debilitating, potentially life threatening condition involving aberrant electrical activity in the heart which results in abnormal heart rhythm. Virtual cardioscopy can play an important role in minimally invasive treatment of cardiac arrhythmias. Second and third generation image-guidance systems are now available for the treatment of arrhythmias using RF ablation catheters. While these 3D tools provide useful information to the clinician, additional enhancements to the virtual cardioscopy display paradigm are critical for optimal therapy guidance. Based on input from clinical collaborators, several key visualization techniques have been developed to enhance the use of virtual cardioscopy during cardiac ablation procedures. We have identified, designed and incorporated several visual cues important to successful virtual cardioscopy. These features include the use of global reference maps, parametric mapping, and focused navigation and targeting using abnormal ...
A system, method, or device classifies an arrhythmia according to the temporal order in which a depolarization wave associated with a particular heart contraction is received at a plurality of electrodes. One or more antiarrhythmia therapies is mapped to each arrhythmia classification. When a particularly classified arrhythmia is detected, the correspondingly mapped therapy list is selected and an appropriate antiarrhythmia therapy delivered. In one example, the particular therapy delivered in response to an arrhythmia depends at least in part on its historical success in treating arrhythmias of that classification.
BACKGROUND: Short QT syndrome (SQTS) carries an increased risk for sudden cardiac death. However, only a short QT interval does not express the risk of ventricular arrhythmias. Thus, additional evaluation of the repolarization abnormality in SQTS pat