Dr. Smith's ECG Blog

DECEMBER 13, 2024

Whenever it is this fast, you need to be very careful to ascertain whether it is irregular ( as in atrial fibrillation with rapid ventricular respsonse ) or regular ( as in VT ). This is not because it is polymorphic VT; it is because it is WPW with atrial fibrillation. Smith : What do you think? It is not VT; it is AF.

AFIB 103

AFIB Atrial Fibrillation Tachycardia Blog 103

Journal of Cardiovascular Electrophysiology

JANUARY 28, 2024

Abstract Introduction Some previous studies have reported that a first-step ethanol infusion into the vein of Marshall (EIVOM) with touch-up radiofrequency (RF) ablation can facilitate mitral isthmus (MI) block and improves the ablation outcomes in persistent atrial fibrillation (PeAF) patients. 0.78, p  = .006).

Atrial Fibrillation 75

Atrial Fibrillation Ablation Bicuspid/Mitral Tachycardia 75

Frontiers in Cardiovascular Medicine

FEBRUARY 17, 2025

Backgroundwide antral pulmonary vein isolation (PVI) is effective for treating paroxysmal atrial fibrillation (PAF), although time-demanding. Procedural data and electrophysiology (EP) laboratory times were systematically collected and analyzed.

Atrial Fibrillation 52

Atrial Fibrillation Ablation Laboratory Electrophysiology 52

Journal of Cardiovascular Electrophysiology

JANUARY 15, 2024

Abstract Introduction Atrial fibrillation and atrial flutter originating from the donor s heart is a commonly reported complication post heart transplant. Case A 47-year-old male presented with atrial tachycardia 6 months post heart transplant.

Atrial Fibrillation 40

Atrial Fibrillation Heart Transplant Atrial Flutter Transplant 40

Journal of Cardiovascular Electrophysiology

JANUARY 13, 2025

Studies have shown that mutations in the RYR2 gene, which encodes the RyR2 protein, are linked to several cardiac arrhythmias, including catecholaminergic polymorphic ventricular tachycardia (CPVT), long QT syndrome (LQTS), calcium release deficiency syndrome (CRDS), and atrial fibrillation (AF).

Congenital Heart Disease 40

Congenital Heart Disease Electrophysiology Congenital Heart Disease 40

Journal of Cardiovascular Electrophysiology

NOVEMBER 5, 2024

Procedures were most commonly for atrial fibrillation (52.4%), atrial flutter (10.9%), and atrioventricular nodal re-entrant tachycardia (10.1%). Results 1089 patients were included: MC 718 (65.9%); Fo8 HT 105 (9.6%); Fo8 MOD 266 (24.4%). 01; minor: MC 16.5%, Fo8 HT 12.0%, Fo8 MOD 7.4%, p =.002).

Electrophysiology 40

Electrophysiology Atrial Flutter Atrial Fibrillation Tachycardia 40

HeartRhythm

MAY 15, 2024

1 Catheter ablation for atrial fibrillation (AF) and ventricular tachycardia (VT) has become the standard of care for many patients presenting with these arrhythmias.2–4 In the past decade, major advances were made in catheter ablation for arrhythmias and implantation of cardiac implantable electronic devices.1

Electrophysiology 40

Electrophysiology Atrial Fibrillation Ablation Arrhythmia 40

Circulation: Arrhythmia and Electrophysiology

DECEMBER 21, 2023

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Inflammation may promote atrial fibrillation (AF) recurrence after catheter ablation. mg twice daily or placebo for 10 days. mg twice daily or placebo for 10 days. The first dose of the study drug was administered within 4 hours before ablation.

Atrial Fibrillation 40

Atrial Fibrillation Ablation Chest Pain Atrial Flutter 40

All About Cardiovascular System and Disorders

MARCH 25, 2024

This measurement has been correlated with those made at electrophysiology study and may predict the potential risk of rapid anterograde conduction if the person develops atrial fibrillation. Bidirectional ventricular tachycardia is the classical arrhythmia noted in catecholaminergic polymorphic ventricular tachycardia.

Exercise 52

Exercise Pediatrics Congenital Tachycardia 52

HeartRhythm

NOVEMBER 30, 2023

The advent of transseptal puncture has enabled the study of atrial fibrillation mechanisms, while epicardial access has enabled exploration of the epicardium in ventricular arrhythmias (ventricular tachycardia/ventricular fibrillation [VF]).1,2

Atrial Fibrillation 40

Atrial Fibrillation Electrophysiology Tachycardia Cardiomyopathy 40

Journal of Cardiovascular Electrophysiology

JANUARY 10, 2024

Abstract Introduction Despite advanced ablation strategies and major technological improvements, treatment of persistent atrial fibrillation (AF) remains challenging and the underlying pathophysiology is not fully understood. ms after) and AF termination to atrial tachycardia (AT) or sinus rhythm (SR) in 12 patients (24%).

Atrial Fibrillation 40

Atrial Fibrillation Ablation Outpatient Arrhythmia 40

Journal of Cardiovascular Electrophysiology

DECEMBER 7, 2023

Abstract Introduction The use of flecainide and propafenone for medical cardioversion of atrial fibrillation (AF) and atrial flutter/intra-atrial reentrant tachycardia (IART) is well-described in adults without congenital heart disease (CHD).

Congenital Heart Disease 40

Congenital Heart Disease Atrial Fibrillation Congenital Heart Disease 40

Journal of Cardiovascular Electrophysiology

DECEMBER 7, 2023

FAAM ablation successfully decreased the recurrence rate of atrial tachyarrhythmia compared with conventional non-PV foci ablation. Abstract Introduction Treatment of recurrent atrial fibrillation (AF) is sometimes challenging due to non-pulmonary vein (PV) foci. The RHYTHMIA system was used to perform all the procedures.

Ablation 40

Ablation Atrial Fibrillation Atrial Flutter Tachycardia 40

Journal of Cardiovascular Electrophysiology

DECEMBER 17, 2024

Abstract Background Dofetilide is a class III antiarrhythmic agent approved for the treatment of atrial fibrillation and atrial flutter. Given the efficacy of other class III agents, it has been used off-label for the treatment of premature ventricular complexes (PVCs) and ventricular tachycardias (VTs).

Tachycardia 40

Tachycardia Heart Disease Atrial Flutter Heart Transplant 40

Journal of Cardiovascular Electrophysiology

JANUARY 5, 2024

Abstract Introduction It would be helpful in determining ablation strategy if the occurrence of perimitral atrial tachycardia (PMAT) could be predicted in advance. We calculated their E-PMCT.

Bicuspid/Mitral 40

Bicuspid/Mitral Tachycardia Atrial Fibrillation Ablation 40

Journal of Cardiovascular Electrophysiology

NOVEMBER 7, 2024

Wolff-Parkinson-White syndrome (WPW) was most prevalent at 31%, followed by atrioventricular nodal reentrant tachycardia (AVNRT) at 24%, atrioventricular reentrant tachycardia (AVRT) at 16%, ventricular tachycardia (VT) at 10%, atrial fibrillation (AF) at 3%, and atrial tachycardia (AT) at 1%.

Pediatrics 40

Pediatrics Ablation Tachycardia Arrhythmia 40

Journal of Cardiovascular Electrophysiology

DECEMBER 3, 2023

Methods and Results This case report discusses a 65-year-old man who had previously undergone pulmonary vein isolation (PVI) and cavo-tricuspid isthmus ablation for atrial fibrillation before ASD closure, respectively. He developed atrial tachycardia (AT) and underwent catheter ablation.

Bicuspid/Mitral 40

Bicuspid/Mitral Ablation Aortic Atrial Fibrillation 40

All About Cardiovascular System and Disorders

OCTOBER 26, 2023

This is mainly to account for the individual variation in anatomical location of right ventricular outflow tract, the main location of electrophysiological abnormalities in Brugada syndrome. If three or more extra stimuli are needed for induction of ventricular fibrillation, the importance comes down further. mV or R/q ≥ 0.75.

Sudden Cardiac Death 52

Sudden Cardiac Death Atrial Fibrillation Electrophysiology Arrhythmia 52

Journal of Cardiovascular Electrophysiology

MARCH 11, 2025

ABSTRACT Introduction The tissue temperature-controlled DiamondTemp ablation (DTA) catheter has been mainly used for atrial fibrillation ablation. Methods Twenty patients were studied: 10 with right ventricular outflow tract PVCs/VTs, eight with PVCs/VTs from the aortic sinus cusps, and two with left ventricular outflow tract PVCs.

Ablation 40

Ablation Arrhythmia Atrial Fibrillation Tachycardia 40

Journal of Cardiovascular Electrophysiology

OCTOBER 19, 2023

Although the QDOT MICRO™ Catheter was mainly designed for pulmonary vein isolation (PVI) its versatility to treat atrial fibrillation (AF) and other types of arrhythmias was recently evaluated by the FAST and FURIOUS study series and other studies and will be presented in this article.

Arrhythmia 40

Arrhythmia Ablation Atrial Flutter Atrial Fibrillation 40

Journal of Cardiovascular Electrophysiology

MARCH 4, 2024

ECG data during the clinical arrhythmia (ventricular tachycardia [VT], upper left figure) is analyzed with an artificial intelligence algorithm which identifies a probable location of the source of the arrhythmia (left ventricular anterolateral papillary muscle, lower left figure). cm, LVEF 50 ± 18%) and was similar to 28 controls.

Arrhythmia 40

Arrhythmia Ablation Tachycardia Atrial Fibrillation 40

Dr. Smith's ECG Blog

APRIL 24, 2022

The ECG there reportedly showed an irregular tachycardia, and the patient was immediately referred to the emergency room. Here is her ECG on arrival: There is a wide complex tachycardia that is irregularly irregular (this is difficult to determine at these very high rates). Lead aVR seems to show the atrial activity clearly.

AFIB 52

AFIB Tachycardia Atrial Fibrillation Blog 52

Journal of Cardiovascular Electrophysiology

DECEMBER 7, 2023

Objective This study compared procedural and outcome data for PFA-PVI to VHPSD-PVI in patients with paroxysmal or persistent atrial fibrillation (PAF/persAF). Compared to PFA VHPSD-PVI might ensure information on left atrial substrate allowing to target concomitant secondary tachycardias.

Ablation 40

Ablation Pulmonary Arrhythmia Atrial Fibrillation 40

Dr. Smith's ECG Blog

APRIL 8, 2016

There is atrial fibrillation. Comments: STEMI with hypokalemia, especially with a long QT, puts the patient at very high risk of Torsades or Ventricular fibrillation (see many references, with abstracts, below). See here for management of Polymorphic Ventricular Tachycardia , which includes Torsades.

STEMI 52

STEMI Myocardial Infarction Cardiac Arrest Arrhythmia 52

Journal of Cardiovascular Electrophysiology

DECEMBER 16, 2024

ABSTRACT Introduction The safety and efficacy of paroxysmal atrial fibrillation (PAF) ablation with the HELIOSTAR multielectrode radiofrequency (RF) balloon catheter have been demonstrated in European studies; data from elsewhere are lacking. Central Illustration. Image is courtesy of Biosense Webster, Inc., All rights reserved.

Atrial Fibrillation 40

Atrial Fibrillation Quality of Life Atrial Flutter Ablation 40

DAIC

MARCH 5, 2024

a global leader in cardiac arrhythmia treatment and part of Johnson & Johnson MedTech , today announced European CE mark approval of the VARIPULSE Platform for the treatment of symptomatic drug refractory recurrent paroxysmal atrial fibrillation ( AF ) using pulsed field ablation (PFA). Atrial Fibrillation. Circulation.

Ablation 59

Ablation Atrial Fibrillation Atrial Flutter Pulmonary 59

Circulation: Arrhythmia and Electrophysiology

DECEMBER 20, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Patients undergoing first-time atrial fibrillation (AF) ablation can benefit from targeting non-pulmonary vein (PV) triggers. Preprocedural identification of high-risk individuals can guide planning of ablation strategy.

Atrial Fibrillation 40

Atrial Fibrillation Ablation Electrophysiology Tachycardia 40

Journal of Cardiovascular Electrophysiology

FEBRUARY 10, 2025

ABSTRACT Background Catheter ablation (CA) for atrial fibrillation (AF) in the elderly poses a growing challenge. Methods Octogenarians with AF or consecutive atrial tachycardia undergoing index or re-ablation (pulmonary vein isolation [PVI] and ablation beyond PVI with different energy sources) in a single center, were analyzed.

Atrial Fibrillation 40

Atrial Fibrillation Ablation Outcomes Pacemaker 40

Journal of Cardiovascular Electrophysiology

DECEMBER 7, 2023

Abstract Introduction Pulsed field ablation (PFA) is a new ablation technology for atrial fibrillation (AF). Data regarding early recurrences of atrial tachyarrhythmia (ERAT) after PFA-pulmonary vein isolation (PVI) are sparse. We found no difference in the rate of LRs among patients experiencing ERAT before or after 45 days.

Atrial Fibrillation 40

Atrial Fibrillation Ablation Document Tachycardia 40

Dr. Smith's ECG Blog

MARCH 6, 2020

Here was his ED ECG: There is sinus tachycardia (rate about 114) with nonspecific ST-T abnormalities. There is a large peaked P-wave in lead II (right atrial enlargement) There is left axis deviation consistent with left anterior fascicular block. See my quick review of atrial tachycardia below) The tachycardia spontaneously resolved.

Heart Failure 52

Heart Failure Tachycardia Atrial Flutter Cardiomyopathy 52

Dr. S. Venkatesan MD

JANUARY 28, 2025

For right or wrong reasons, the world of electrophysiology has pushed us into a belief system that, if it is AF, the culprit must be pulmonary veins. It doesn’t require any extraordinary intelligence to conclude any chronic focal atrial tachycardia can get degenerated to AF in the long run. It is still true in many cases.

Atrial Fibrillation 52

Atrial Fibrillation Pulmonary Tachycardia Electrophysiology 52

Dr. Smith's ECG Blog

DECEMBER 20, 2024

Additionally, the patient had no other apparent reason to have sinus tachycardia (such as volume depletion, bleeding, fever). So the most likely rhythm in ECG 1 is ectopic atrial tachycardia. Therefore the first part of ECG 1 shows ectopic atrial tachycardia with biventricular pacing. Point 1: What is PVARP?

Chest Pain 102

Chest Pain Tachycardia Pacemaker Defibrillator 102

Dr. Smith's ECG Blog

APRIL 8, 2015

If the patient has Abnormal Vital Signs (fever, hypotension, tachycardia, or tachypnea, or hypoxemia), then these are the primary issue to address, as there is ongoing pathology which must be identified. Electrophysiologic studies were performed in selected patients only as clinically appropriate.

Arrhythmia 52

Arrhythmia Outcomes Risk Factors Chest Pain 52

Journal of Cardiovascular Electrophysiology

JANUARY 27, 2025

ABSTRACT Introduction Freedom from recurrences of atrial tachyarrhythmia (ATA) is suboptimal after pulmonary vein isolation (PVI) in patients with persistent atrial fibrillation (PsAF).

Atrial Fibrillation 40

Atrial Fibrillation Ablation Atrial Flutter Arrhythmia 40

Journal of Cardiovascular Electrophysiology

JANUARY 7, 2025

ABSTRACT Typical atrial flutter (AFL), defined as cavotricuspid isthmus (CTI)-dependent macro-re-entrant atrial tachycardia, often causes debilitating symptoms, and is associated with increased incidence of atrial fibrillation, stroke, heart failure, and death.

Atrial Flutter 45

Atrial Flutter Atrial Fibrillation Quality of Life Ablation 45

Journal of Cardiovascular Electrophysiology

JANUARY 7, 2025

Results Among 541 participants, 93% were diagnosed with WPW syndrome, with orthodromic atrioventricular reciprocating tachycardia (AVRT) being the most prevalent arrhythmia, affecting 55% of the cases. Electrical cardioversion was the first-line treatment for pre-excited atrial fibrillation and antidromic AVRT across all of Africa.

Atrial Fibrillation 40

Atrial Fibrillation Tachycardia Ablation Arrhythmia 40