Ventricular tachycardia electrocardiographic atrial flutter. Medical search. Frequent questions

Low energy biphasic waveform cardioversion of atrial arrhythmias in pediatric patients and young adults. (medscape.com)
Sotalol is also indicated for the treatment of documented life threatening ventricular arrhythmias and is marketed under the brand name Betapace ® (sotalol hydrochloride tablets). (nih.gov)
As an assistant professor in the Department of Medicine, Dr. Hoffmayer conducts research on the electrophysiologic mechanisms and pathophysiology of atrial and ventricular arrhythmias, novel mapping and ablation techniques of ventricular tachycardia, safety and efficacy of antiarrhythmic therapy, body surface mapping and electrocardiographic imaging (ECGI), and cardiac resynchronization therapy. (ucsd.edu)
Wynnewood, PA - Early experiences with an ambulatory electrocardiographic monitoring system have shown the device to be effective at detecting cardiac arrhythmias in patients with and without symptoms. (medscape.com)
As with most symptomatic arrhythmias, conversion should ideally be achieved before transfer, except in the case of a hemodynamically stable patient referred to an institution with clearly superior expertise and facilities for management of pediatric atrial flutter. (medscape.com)
The presence of late-potentials helps identify individuals at risk for developing life-threatening arrhythmias, such as ventricular tachycardia or ventricular fibrillation. (bcm.edu)
Predicting Malignant Ventricular Arrhythmias Using Real-Time Remote Monitoring. (harvard.edu)
Investigator-reported ventricular arrhythmias and mortality in heart failure with mildly reduced or preserved ejection fraction. (harvard.edu)
Ventricular arrhythmias after fibroma resection: Are patients still at risk? (harvard.edu)
Pulmonary vein arrhythmias have been associated with the development of atrial fibrillation. (acc.org)
(5,6) While our patient has had improvement of his LVEF, and is free from arrhythmias, his future risk of the development of atrial fibrillation is unknown. (acc.org)
Benign fetal arrhythmias, including premature contractions and sinus tachycardia, do not need any treatment before and after birth. (biomedcentral.com)
A 10-year observational study on the pregnant women demonstrated 29 cases of fetal arrhythmias: 12 (41.4%) of which were fetal tachycardias (10 cases with SVT, 2 cases with atrial flutter (AF)), 5 (17.2%) were fetal bradyarrhythmias (all 5 cases with AV block), and 12 (41.4%) were fetal irregular cardiac rhythms (premature atrial beats) [ 4 ]. (biomedcentral.com)
11 beats per minute (bpm) and sinusal tachycardias, did not need any treatment before or after birth, whereas those with postnatal arrhythmias associated with hemodynamic fluctuations require interventions, as they may lead to preterm delivery in some occasions [ 9 ]. (biomedcentral.com)
CARL pioneered computational mapping of 'chaotic' heart rhythm disturbances (arrhythmias), targeting mechanistic drivers for atrial and ventricular fibrillation (AF, VF) using machine learning and computational models. (stanford.edu)
Specific support has been via grants HL70529 and HL162260 for ventricular arrhythmias, and HL103800, HL83359, HL122384, HL149134, and several SBIR grants for atrial arrhythmias. (stanford.edu)
The class I and III agents are all effective in reducing ventricular premature beats but often cause side effects and may exacerbate serious arrhythmias in 5-20% of patients. (health.am)
There is sparse literature on cardiac arrhythmias and the utility of ambulatory rhythm monitoring in patients with postural tachycardia syndrome and orthostatic intolerance. (cambridge.org)
This retrospective descriptive study examined the frequency of cardiac arrhythmias, as detected by ambulatory rhythm monitoring, in children with postural tachycardia syndrome/orthostatic intolerance or syncope who were seen at the Children's National Hospital Electrophysiology Clinic between January 2001 and December 2020. (cambridge.org)
This study suggests that a substantial proportion of postural tachycardia syndrome/orthostatic intolerance patients may have concomitant underlying cardiac arrhythmias, at a frequency similar to what is seen in patients undergoing primary evaluation for cardiac symptoms such as chest pain, palpitations, and syncope. (cambridge.org)
In the appropriate clinical context, physicians caring for postural tachycardia syndrome/orthostatic intolerance patients should consider additional evaluation for arrhythmias beyond sinus tachycardia. (cambridge.org)

The rate is usually regular, but it may be irregular in rapid atrial tachycardias with variable AV conduction and in MAT. (medscape.com)
In patients with a 2:1 conduction ratio, the electrocardiographic findings often suggest a mild sinus tachycardia with first-degree atrioventricular block. (medscape.com)
In intact animals it slows heart rate, decreases AV nodal conduction and increases the refractory periods of atrial and ventricular muscle and conduction tissue. (nih.gov)
Control of patients with flutter and/or chronic atrial fibrillation , except when associated with the existence of accessory conduction pathways (s. de Wolff-Parkinson-White, s. de Lown-Ganong-Levine). (activeingredients.online)
Treatment of supraventricular tachycardias , including: paroxysmal supraventricular tachycardia, including that associated with accessory conduction pathways (s. de Wolff-Parkinson-White, s. de Lown-Ganong-Levine). (activeingredients.online)
Atrial flutter or fibrillation, except when associated with the existence of accessory conduction pathways (s. de Wolff-Parkinson-White, s. de Lown-Ganong-Levine). (activeingredients.online)
Atrioventricular 2:1-conduction via an accessory pathway during left atrial flutter unmasking WPW. (deepdyve.com)
However, accurate diagnostic workup of broad complex tachycardia is crucial to ensure correct indication for ICD treatment and to avoid unnecessary invasive treatment and device-associated morbidity.Case summaryWe present a case of atypical atrial flutter with 2:1 atrioventricular (AV) conduction via a left-posterior accessory pathway (AP), leading to the diagnosis of Wolff-Parkinson-White (WPW) syndrome. (deepdyve.com)
Upon admission, the 72-year-old patient showed a regular broad complex tachycardia with superior axis and positive concordance in precordial leads, suggestive of either ventricular tachycardia (VT), antidromic AV re-entrant tachycardia (AVRT), or supraventricular tachycardia with antegrade conduction via a left-posterior AP. (deepdyve.com)
Interrogation of the two-chamber ICD, which was very likely implanted unjustified in a peripheral clinic before, revealed atrial flutter with 2:1 AV conduction. (deepdyve.com)
This can present with palpitations or syncope from an atrioventricular reciprocating tachycardia or rarely sudden death secondary to ventricular fibrillation from rapid conduction of atrial fibrillation across the accessory pathway. (escardio.org)
The distinction from aberrant conduction of supraventricular tachycardia may be difficult. (health.am)
It is categorized as a Vaughn-Williams Class IC agent based upon its properties of causes a strong degree of sodium channel blockage with slowing cardiac conduction and a minimal effect on ventricular repolarization. (encyclopedia.pub)

Re-entrant atrial tachycardia is usually seen after cardiac surgery or catheter ablation with linear lesions that result in islets of scars. (medscape.com)
Other possible etiologies are listed below: Hypoxia Pulmonary disease Ischemic heart disease Stimulants: cocaine, caffeine, chocolate, ephedra Alcohol Metabolic disturbances Digoxin toxicity Heightened sympathetic tone A study noted 10 to 15% of patients presenting for supraventricular tachycardia (SVT) ablation had atrial tachycardia. (wikipedia.org)
Catheter ablation of focal atrial tachycardia may be appropriate in patients failing medical therapy. (wikipedia.org)
Biviano A, Garan H, Hickey K, Whang W, Dizon J, Rosenbaum M. Atrial flutter catheter ablation in adult patients with repaired tetralogy of Fallot: mechanisms and outcomes of percutaneous catheter ablation in a consecutive series. (medscape.com)
Dr. Hoffmayer focuses on complex ablation including atrial fibrillation, premature ventricular contractions (PVC) and ventricular tachycardia, including epicardial ventricular tachycardia ablation. (ucsd.edu)
An echo performed from your esophagus is very important in looking for blood clots if you have atrial fibrillation or atrial flutter and a cardioversion and/or radiofrequency ablation procedure is planned. (bcm.edu)
Within several seconds of ablation, there was complete cessation of tachycardia. (acc.org)
He remains free from tachycardia three months post ablation. (acc.org)
Focal atrial tachycardia as the sole mechanism for supraventricular tachycardia is relatively rare accounting for 10-15% of cases referred for catheter ablation. (acc.org)
(3) In this series, focal ablation of either the earliest activation site at the os of the vein, or circumferential ablation of the culprit vein resulted in favorable long term freedom from recurrent atrial tachycardia, and atrial fibrillation. (acc.org)
(4) In three large series of patients undergoing ablation for focal pulmonary vein tachycardia, the reported development of atrial fibrillation post ablation is low. (acc.org)
Ullah W, Ruge M, Hajduczok AG, Kochar K, Frisch DR, Pavri BB, Alvarez R, Rajapreyar IN, Brailovsky Y. Adverse outcomes of atrial fibrillation ablation in heart failure patients with and without cardiac amyloidosis: a Nationwide Readmissions Database analysis (2015-2019). (jefferson.edu)
Ablation therapy is used to destroy abnormal foci responsible for atrial fibrillation. (aafp.org)
Ablation therapy may be superior to antiarrhythmics in selected patients, including those with paroxysmal atrial fibrillation who are symptomatic but without structural heart disease, patients who are intolerant of antiarrhythmics, and patients with inadequate pharmacologic rhythm control. (aafp.org)
Atrial ventricular nodal ablation is recommended for patients refractory to medical therapy, usually older patients needing a pacemaker. (aafp.org)
Atrial Tachycardias After Atrial Fibrillation Ablation: How to Manage? (aerjournal.com)
With catheter ablation becoming effective for non-pharmacological management of AF, many cases of atrial tachycardia (AT) after AF ablation have been reported in the past decade. (aerjournal.com)
In the Catheter Ablation Versus Anti-arrhythmic Drug Therapy for Atrial Fibrillation (CABANA) trial, the catheter ablation group had superior quality of life compared with the anti-arrhythmic drug group and less AF recurrence after blanking through intention-to-treat analysis. (aerjournal.com)
9-12 However, atrial tachycardia (AT) occurring after AF ablation is often symptomatic, complex and poorly controlled by anti-arrhythmic agents. (aerjournal.com)

In clinical practice, three major types of atrial tachycardia are seen: focal atrial tachycardia, multifocal atrial tachycardia (MAT), and re-entrant atrial tachycardia. (medscape.com)
Focal atrial tachycardia arises from a localized atrial site and is characterized by regular, organized atrial activity with discrete P waves and, typically, an isoelectric segment between P waves. (medscape.com)
Focal atrial tachycardia is usually episodic or paroxysmal. (medscape.com)
Weber R, Letsas KP, Arentz T, Kalusche D. Adenosine sensitive focal atrial tachycardia originating from the non-coronary aortic cusp. (medscape.com)
Forms of atrial tachycardia (ATach) include multifocal atrial tachycardia (MAT), focal atrial tachycardia and atrial flutter. (wikipedia.org)
However, focal atrial tachycardia often occurs in healthy individuals without structural heart disease. (wikipedia.org)
Despite an irregularly irregular rhythm, the patient in our case suffers from a focal atrial tachycardia. (acc.org)
(2) Although relatively rare, sustained episodes of focal atrial tachycardia may lead to a rate related cardiomyopathy. (acc.org)

Paroxysmal atrial tachycardia (PAT) is an episode of arrhythmia that begins and ends abruptly. (wikipedia.org)
Prophylaxis of paroxysmal supraventricular tachycardia after treatment. (activeingredients.online)
The NST group included AF, atrial flutter, paroxysmal supraventricular tachycardias (PSVTs) including atrial tachycardias and indeterminate nonsinus rhythms. (biomedcentral.com)

In patients with multifocal atrial tachycardia (MAT), the history may disclose an underlying illness that is causing the tachycardia. (medscape.com)
Na v 1.5 gain-of-function mutation is proved to be associated with an increased risk of multifocal atrial and ventricular ectopies and dilated cardiomyopathy [ 8 ]. (biomedcentral.com)

F 1 scores for 11 rhythms exceeded 80, 7 exceeded 90, and 5 including atrial fibrillation/flutter, ventricular tachycardia, ventricular bigeminy, ventricular trigeminy, and third-degree heart block exceeded 95. (nih.gov)

An unusual case of non-reentrant atrioventricular nodal tachycardia. (jefferson.edu)
The onset of the SVT is typical of an AV-nodal re-entry tachycardia ( AVNRT ), although with the rate of 150bpm, atrial flutter with a 2:1 block is also a possibility. (litfl.com)
Adenosine is approved for the acute management and termination of supraventricular tachyarrhythmias, in- cluding A-V nodal reentrant tachycardia and A-V recip-rocating tachycardia. (brainkart.com)

To minimize the risk of induced arrhythmia, patients initiated or re-initiated on Sotalol Hydrochloride Tablets (AF) should be placed for a minimum of three days (on their maintenance dose) in a facility that can provide cardiac resuscitation, continuous electrocardiographic monitoring and calculations of creatinine clearance. (nih.gov)
Atrial fibrillation is a supraventricular arrhythmia that adversely affects cardiac function and increases the risk of stroke. (aafp.org)
Because normal electrocardiographic findings do not rule out atrial fibrillation, home monitoring is recommended if there is clinical suspicion of arrhythmia despite normal test results. (aafp.org)
Atrial fibrillation is a supraventricular arrhythmia characterized by uncoordinated electrical activation of the atria and an irregular, often rapid, ventricular response causing hemodynamic compromise. (aafp.org)
Atrial fibrillation is associated with a fivefold increased risk of stroke, 3 - 5 and it is the most common arrhythmia. (aafp.org)
In postural tachycardia syndrome/orthostatic intolerance patients, arrhythmia was detected on 15% of 332 ambulatory rhythm monitors. (cambridge.org)
In syncope patients, arrhythmia was detected on 16% of 157 ambulatory rhythm monitors, not significantly different from the postural tachycardia syndrome/orthostatic intolerance group. (cambridge.org)

Re-entrant atrial tachycardias are usually incessant and may lead to cardiomyopathy. (medscape.com)
120ms) is commonly found in trained athletes but care is needed not to miss underlying pathology such as an atrial septal defect, brugada syndrome or arrhythmogenic right ventricular cardiomyopathy (see below) ( 1 ). (escardio.org)
If the underlying condition is mitral prolapse, hypertrophic cardiomyopathy, left ventricular hypertrophy, or coronary disease - or if the QT interval is prolonged - ß-blocker therapy is appropriate. (health.am)
Ventricular tachycardia is a frequent complication of acute myocardial infarction and dilated cardiomyopathy but may occur in chronic coronary disease, hypertrophic cardiomyopathy, mitral valve prolapse, myocarditis, and in most other forms of myocardial disease. (health.am)
Currently, flecainide is mostly used for sinus rhythm maintenance in atrial fibrillation patients without structural cardiomyopathy although recent studies enrolling different patient population demonstrated a good effectiveness and safety profile. (encyclopedia.pub)

Movahed MR, Hashemzadeh M, Jamal MM. Diabetes mellitus is a strong, independent risk for atrial fibrillation and flutter in addition to other cardiovascular disease. (medscape.com)

2020 ESC Guidelines for the diagnosis and management of atrial fibrillation developed in collaboration with the European Association for Cardio-Thoracic Surgery (EACTS): The Task Force for the diagnosis and management of atrial fibrillation of the European Society of Cardiology (ESC) Developed with the special contribution of the European Heart Rhythm Association (EHRA) of the ESC. (empendium.com)
The 2020 Canadian Cardiovascular Society/Canadian Heart Rhythm Society Comprehensive Guidelines for the Management of Atrial Fibrillation. (empendium.com)
He cares for patients with all types of heart rhythm disorders and is interested in both medical and procedural management of atrial fibrillation, atrial flutter, supraventricular tachycardia, and ventricular tachycardia. (ucsd.edu)

In addition to individuals with heart diseases, including congenital heart disease, atrial tachycardia may also occur in persons with structurally normal hearts. (medscape.com)
Thrombosis and thromboembolic events are recognized complications in patients with atrial flutter, particularly in the setting of repaired congenital heart disease, such as the Fontan procedure. (medscape.com)

This 12-lead electrocardiogram demonstrates an atrial tachycardia at a rate of approximately 150 beats per minute. (medscape.com)
In a patient with supraventricular tachycardia (SVT), the presence of warm-up phenomenon on an electrocardiogram (eg, on Holter monitoring) suggests that the SVT is atrial tachycardia. (medscape.com)
When atrial flutter is conducted to the ventricle in a 1:1 fashion, the electrocardiogram may resemble ventricular tachycardia. (medscape.com)
Optimal surface electrocardiogram lead for identification of the mechanism of supraventricular tachycardia in children. (medscape.com)
Figures 1 and 2 demonstrate a 12-lead electrocardiogram with bursts of atrial tachycardia and sinus rhythm. (acc.org)

Reentrant atrial tachycardia is not uncommon in patients with a history of a surgically repaired atrial septal defect. (medscape.com)

An invasive electrophysiological study proved the diagnosis of a bidirectionally conducting, left-posterior AP, which was successfully ablated.DiscussionDifferential diagnosis of broad complex tachycardia with superior axis and positive concordance of chest leads consists of i) VT with a left ventricular exit at the posterior mitral annulus, ii) antidromic AVRT involving a left-posterior AP, and iii) supraventricular tachycardia predominantly conducted via a left-posterior AP. (deepdyve.com)
Wide complex tachycardia: AF with aberrations and AF with WPW . (wikidoc.org)
A narrow complex tachycardia is interrupted by a run of polymorphic VT , which rapidly deteriorates into ventricular fibrillation . (litfl.com)
Narrow Complex Tachycardia: What is the Mechanism? (123library.org)

Describing heart rate variability in patients with chronic atrial fibrillation during hospitalization for COVID-19. (jefferson.edu)

An estimated 70,000 strokes each year are caused by atrial fibrillation (summary by Oberti et al. (nih.gov)

Such asynchronous ventricular quivering or fibrillation prevents any effective cardiac output and results in unconsciousness (SYNCOPE). (harvard.edu)

Typically, atrial tachycardia manifests as a sudden onset of palpitations. (medscape.com)

Fetal atrial flutter: electrophysiology and associations with rhythms involving an accessory pathway. (medscape.com)

MAT is an irregular supraventricular tachycardia characterized by three distinct P-wave morphologies and/or patterns of atrial activation at different rates. (medscape.com)

Short discrete ramps or bursts of atrial stimuli are the most likely to produce a type I conversion of atrial flutter (immediate conversion to sinus rhythm), particularly if they can be delivered in or near the flutter circuit. (medscape.com)
Figure 1 is a 12-lead ECG demonstrating bursts of atrial tachycardia. (acc.org)

Flecainide is an IC antiarrhythmic drug approved in 1984 from Food and Drug Administration for the suppression of sustained ventricular tachycardia and later for acute cardioversion of atrial fibrillation (AF) and for sinus rhythm maintenance. (encyclopedia.pub)

Flecainide was first synthesized in 1972 and approved in 1984 from the Food and Drug Administration (FDA) for the suppression of sustained ventricular tachycardia [ 1 ] and later for acute cardioversion of AF and for sinus rhythm maintenance. (encyclopedia.pub)
this should unmask any flutter waves and may convert AVNRT to sinus rhythm. (litfl.com)

medical citation needed] Atrial tachycardia tends to occur in individuals with structural heart disease, with or without heart failure, and ischemic coronary artery disease. (wikipedia.org)
Myocardial involvement may produce tachyarrhythmias, predominantly ventricular tachycardia (VT), but atrial tachycardias, atrial flutter, and atrial fibrillation may also occur. (merckmanuals.com)
Ambulatory electrocardiographic monitoring or monitoring during graded exercise may reveal more frequent and complex ventricular premature beats than occur in a single routine ECG. (health.am)
Sudden death occurs more frequently (presumably as a result of ventricular fibrillation ) when ventricular premature beats occur in the presence of organic heart disease but not in individuals with no known cardiac disease. (health.am)
Occasionally, acceleration of ventricular rate may occur when lidocaine hydrochloride is administered to patients with atrial flutter or fibrillation. (pfizermedicalinformation.com)
Dr. Olgin's basic research lab is interested in atrial and ventricular remodeling and how these processes occur to develop a substrate for atrial fibrillation and ventricular tachycardia. (ucsf.edu)

Sinus beats are followed by paroxysms of junctional tachycardia at around 140 bpm. (litfl.com)

The p wave in lead V1 is entirely positive, suggesting a left atrial focus. (acc.org)
Left atrial appendage obliteration is an option for reducing stroke risk. (aafp.org)

Circulating linoleic acid at the time of myocardial infarction and risk of primary ventricular fibrillation. (harvard.edu)
Flecainide works blocking the open-state fast inward Na+ channel Nav 1.5 [ 8 ] in a rate- and voltage-dependent manner, reducing the maximum rate of phase 0 rise of the action potential (Vmax) in fast channel-dependent myocardial fibers (mostly in His-Purkinje tissue and ventricular muscle, followed by atrial muscle) [ 9 ] . (encyclopedia.pub)
He also has active studies in understanding the remodeling that occurs in the ventricle in the setting of heart failure and myocardial infarction to create the substrate for sudden death and ventricular tachycardia and fibrillation. (ucsf.edu)

Atrial flutter and thromboembolic risk: a systematic review. (medscape.com)

Adenosine does not affect the action potential of ven-tricular myocytes because the adenosine-stimulated potassium channel is absent in ventricular myocardium. (brainkart.com)
These groups of internodal tissue are best referred to as internodal atrial myocardium, not tracts, as they do not appear to be histologically discrete specialized tracts. (medscape.com)

however, the presence of AMA as a risk factor for ventricular tachyarrhythmias (VTs) has remained unknown. (nii.ac.jp)
Rarely, an adenosine bo-lus injection is accompanied by atrial fibrillation or ven-tricular tachyarrhythmias. (brainkart.com)

Sinus node disease encompasses a wide range of clinical presentations from sinus bradycardia to sinus arrest or bradycardia-tachycardia syndrome ( 4 ). (escardio.org)

Review of diagnosis, treatment, and outcome of fetal atrial flutter compared with supraventricular tachycardia. (medscape.com)
The emergency department diagnosis of sinus versus nonsinus tachycardia is an important clinical challenge. (biomedcentral.com)
The diagnosis of sinus tachycardia becomes much less likely as age and heart rate increase. (biomedcentral.com)
Tachycardia is a very common clinical finding in the emergency department (ED), and the differential diagnosis is often challenging. (biomedcentral.com)
Supraventricular tachycardia: An overview of diagnosis and management. (nih.gov)
Pulse rate is sensitive, but not specific, for diagnosis, and suspected atrial fibrillation should be confirmed with 12-lead electrocardiography. (aafp.org)
Adenosine may be helpful in the diagnosis of atrial flutter. (brainkart.com)

Clinical relevance of atrial fibrillation/flutter, stroke, pacemaker implant, and heart failure in Emery-Dreifuss muscular dystrophy: a long-term longitudinal study. (medscape.com)
2019 AHA/ACC/HRS Focused Update of the 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. (empendium.com)
Clinical, electrocardiographic and electrophysiologic variables were analyzed to identify predictors of progression to significant AVB (i.e. second or third grade). (revespcardiol.org)
Practice standards for electrocardiographic monitoring in hospital settings: an American Heart Association scientific statement from the Councils on Cardiovascular Nursing, Clinical Cardiology, and Cardiovascular Disease in the Young: endorsed by the International Society of Computerized Electrocardiology and the American Association of Critical-Care Nurses. (jamanetwork.com)
Dr. Olgin's clinical research has focused on atrial fibrillation and sudden cardiac death mechanisms, epidemiology, genetics and interventions. (ucsf.edu)

Drug therapy in these cases can be classified under the 3 broad headings of ventricular rate control, acute conversion, and chronic suppression. (medscape.com)

If atrial tachyarrhythmia persists and the patient is symptomatic, the patient may benefit from class IA, IC, or class III antiarrhythmics. (wikipedia.org)
A European study of young males applying for pilot licenses demonstrated that 0.34% had asymptomatic atrial tachycardia and 0.46% had symptomatic atrial tachycardia. (wikipedia.org)

Increasing utilization of long-term outpatient ambulatory electrocardiographic (ECG) monitoring continues to drive the need for improved ECG interpretation algorithms. (nih.gov)

Safety of Adenosine for the Treatment of Supraventricular Tachycardia in Hospitalized Patients with COVID-19 Pneumonia. (jefferson.edu)

Pulmonary vein associated tachycardia is a rare entity. (acc.org)
In a retrospective series, only 3% of all atrial tachycardia from a large tertiary referral center was classified as pulmonary vein tachycardia. (acc.org)
This is associated with right atrial overload, as in pulmonary hypertension and right heart failure. (clinicalgate.com)

Predictive value of global longitudinal strain by left ventricular ejection fraction. (harvard.edu)

Atrial fibrillation (AF) is a supraventricular tachyarrhythmia characterized by uncoordinated atrial activation with consequent deterioration of atrial mechanical function. (nih.gov)

Ventricular premature beats are characterized by wide QRS complexes that differ in morphology from the patient's normal beats. (health.am)
The 7th beat is a premature atrial complex ( PAC ) with different morphology P, QRS and T waves, which initiates a run of a supraventricular tachycardia at 150bpm. (litfl.com)

Atrial tachycardia due to enhanced automaticity may be nonsustained but repetitive or it may be continuous or sustained, as in reentrant forms of atrial tachycardia. (medscape.com)
Micro-reentry and enhanced automaticity in one or more atrial circuits are the most common triggers for atrial fibrillation. (aafp.org)

Left ventricular hypertrophy is described according to voltage criteria and strain/repolar-isation criteria. (clinicalgate.com)

Atrial tachycardia is a supraventricular tachycardia (SVT) that does not require the atrioventricular (AV) junction, accessory pathways, or ventricular tissue for its initiation and maintenance. (medscape.com)
The Class III electrophysiological effects in man include prolongation of the atrial and ventricular monophasic action potentials, and effective refractory period prolongation of atrial muscle, ventricular muscle, and atrio-ventricular accessory pathways (where present) in both the anterograde and retrograde directions. (nih.gov)
Hypersensitivity, cardiogenic shock, sinus disease (except if there is an implanted pacemaker), second or third degree AV block (except if there is an implanted pacemaker), flutter or atrial fibrillation that have a conductive accessory AV tract (s. de Wolff-Parkinson-White, s. de Lown-Ganong-Levine). (activeingredients.online)

Anatomic evidence suggests the presence of 3 intra-atrial pathways: (1) anterior internodal pathway, (2) middle internodal tract, and (3) posterior internodal tract. (medscape.com)

Anatomy23

Organisms1

Diseases59

Chemicals and Drugs23

Analytical, Diagnostic and Therapeutic Techniques and Equipment49

Phenomena and Processes12

Disciplines and Occupations2

Information Science3

Health Care14

Arrhythmias21

Conduction13

Ablation19

Focal atrial tachycardia8

Paroxysmal3

Multifocal2

Including atrial fibrillation1

Nodal3

Arrhythmia7

Cardiomyopathy5

Fibrillation and flutter1

Management of Atrial Fibrillation3

Congenital heart d2

Electrocardiogram5

Septal defect1

Complex tachycardia4

Chronic atrial fibrillation1

Caused by atrial fibrillation1

Syncope1

Onset of palpitations1

Rhythms1

Irregular1

Bursts of atrial2

Cardioversion of atrial1

Sinus rhythm2

Occur6

Junctional1

Left atrial2

Myocardial3

Thromboembolic risk1

Myocardium2

Tachyarrhythmias2

Syndrome1

Diagnosis7

Clinical5

Acute1

Symptomatic2

Ambulatory electrocardiographic1

Adenosine1

Pulmonary3

Ejection fraction1

Characterized by uncoordinated1

Morphology2

Automaticity2

Hypertrophy1

Accessory3

Pathways1