Circulation: Arrhythmia and Electrophysiology

OCTOBER 25, 2023

Circulation: Arrhythmia and Electrophysiology, Volume 16, Issue 11 , Page e012191, November 1, 2023. METHODS:Retrospective cohort study of patients <21 years of age with HCM/preexcitation from 2000 to 2022. METHODS:Retrospective cohort study of patients <21 years of age with HCM/preexcitation from 2000 to 2022.

Cardiomyopathy 40

Cardiomyopathy Atrial Fibrillation Electrophysiology Ablation 40

Dr. Smith's ECG Blog

SEPTEMBER 18, 2024

The 2015 ACC/AHA/HRS Guidelines on SVT ( Page et al — Circulation 133(14):e506-e574, 2016 ) list the usual upper rate limit for ectopic ATach and AVNRT at ~250/minute — though other sources suggest occasional rates for these rhythms ( and for AVRT in patients with an accessory pathway ) that may attain up to 280/minute ( StatPearls, 2023 ).

Atrial Flutter 64

Atrial Flutter Exercise AFIB Tachycardia 64

Dr. Smith's ECG Blog

MARCH 15, 2023

The Role of Sinus Arrhythmia: I found it interesting to compare the long lead II rhythm strips in the 3 serial tracings from today’s case ( Figure-1 ). Note fairly marked irregularity of the R-R interval — indicative of definite sinus arrhythmia. 25, 2022 ). What about the regularity ( or lack thereof ) in these 3 tracings?

Atrial Fibrillation 52

Atrial Fibrillation AFIB Arrhythmia Exercise 52

Ken Grauer, MD

APRIL 13, 2024

That said — most patients eventually do become symptomatic ( Webb and Gatzoulis: Circulation 114: 1645-1653, 2006 ). P utting I t A ll T ogether: At this point in my assessment of today's rhythm — I fully acknowledge that I did not know for certain the etiology of this arrhythmia. Many patients go years without significant symptoms.

Blog 115

Blog Tachycardia Pulmonary Arrhythmia 115

Dr. Smith's ECG Blog

NOVEMBER 11, 2023

Dr. Smith circulated the initial ECG in today's case ( that I reproduce in Figure-1 ) to our group — initially without him yet knowing anything about this patient. I added, "Makes me wonder if this could be myocarditis in a younger adult — maybe even with sinus arrhythmia." Figure-1: The initial ECG in today's case.

Stroke 70

Stroke Strokes Chest Pain Cardiomyopathy 70

DAIC

MARCH 31, 2025

arrhythmia yield versus 69.1% in daily-symptom patients, demonstrating that greater symptom frequenc y does not necessarily reflect increased arrhythmia burden. arrhythmia yield versus 69.1% in daily-symptom patients, demonstrating that greater symptom frequenc y does not necessarily reflect increased arrhythmia burden.

Arrhythmia 52

Arrhythmia Atrial Fibrillation Tachycardia Heart Failure 52

Dr. Smith's ECG Blog

JULY 21, 2024

However, he suddenly developed a series of malignant ventricular arrhythmias. Below are printouts of some of the arrhythmias recorded. This time, the arrhythmia did not spontaneously terminate — but rather degenerated to VFib, requiring defibrillation. The arrhythmia starts with a PVC having a short coupling interval.

Arrhythmia 131

Arrhythmia Cardiogenic Shock Bradycardia Defibrillator 131

Dr. Smith's ECG Blog

JUNE 23, 2024

They shocked him twice before return of spontaneous circulation. This is a critically important determination because of the 2017 AHA/ACC/HRS Guidelines for Management of Patients with Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death. His daughter immediately started CPR and another family member called EMS.

Chest Pain 118

Chest Pain Cardiac Arrest Sudden Cardiac Death Blog 118

Dr. S. Venkatesan MD

MARCH 19, 2024

Massie Block -Ref 1) But, if there is something unusual in the clinical history, be ready to investigate until the arrhythmia, or at least the anxiety disappears. Circulation. 2022 Jan 5;11(1):279. Final message AV blocks, even Mobitz type 2, can occur at normal times of heightened vagal tone.( Reference 1. doi: 10.1161/01.cir.58.2.305.

Arrhythmia 52

Arrhythmia Sudden Cardiac Death Electrophysiology Cardiomyopathy 52

Dr. Smith's ECG Blog

JUNE 2, 2023

Free full text: [link] There are 6 categories of criteria : 1) Imaging 2) Pathologic 3) ECG Repolarization 4) ECG Depolarization 5) Arrhythmias 6) Family History. For review of a case of RVOT VT — Please see My Comment at the bottom of the page in the February 14, 2022 post in Dr. Smith's ECG Blog. J Electrocardiol, 42 (2009), pp.

Tachycardia 96

Tachycardia Cardiomyopathy Electrocardiogram Article 96

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

Circulation

NOVEMBER 10, 2023

Circulation, Ahead of Print. Physiologic resynchronization by LBBAP may be associated with lower risk of arrhythmias compared with BVP. We performed propensity score matched (PS) analysis of LBBAP and BVP in a 1:1 ratio. We assessed the incidence of VT/VF and new-onset AF among patients with no prior history of AF.

Atrial Fibrillation 40

Atrial Fibrillation Pacemaker Physiology Tachycardia 40

Dr. Smith's ECG Blog

JULY 22, 2023

Prior to Mizusawa's study, it was thought that the incidence of syncope, arrhythmia, or SCD in this cohort was low [7]. In light of the risk of arrhythmia events observed in the Mizusawa trial, a formal EP study might be reasonable to obtain in those with fever induced asymptomatic Brugada ECG changes to help risk stratify these patients.

Chest Pain 92

Chest Pain Heart Rhythm Sudden Cardiac Death Dysrhythmia 92

Dr. S. Venkatesan MD

FEBRUARY 20, 2024

In myocardial pathology, the genesis and sustainability of ventricular arrhythmia are intricately related to the degree of LV dysfunction of any cause. Circulation. 2022 Feb 8;145(6):427-436. Heart is an irreversibly coupled electro-mechanical organ , right from the fetal days until the final heart beat.

Defibrillator 52

Defibrillator Heart Failure Sudden Cardiac Death Cardiomyopathy 52

Dr. Smith's ECG Blog

DECEMBER 5, 2023

Circulation. Erratum in: Circulation. My Thoughts on the ECG in Figure-1: The rhythm in ECG #1 is sinus arrhythmia. I've listed potential causes of acute pericarditis in My Comment at the bottom of the page in the June 11, 2022 post in Dr. Smith's ECG Blog. 2021 Aug 10;144(6):e123-e135. doi: 10.1161/CIR.0000000000001001.

Pediatrics 120

Pediatrics Pericarditis COVID-19 Congenital Heart Disease 120

Dr. Smith's ECG Blog

FEBRUARY 6, 2025

The possibility of an ischemic cause of the ventricular arrhythmia has to be considered! A workup was undertaken in search of a cause of the patient's ventricular arrhythmia. Once the arrhythmia was under control cardiac MRi was performed. The idiopathic VTs are an interesting group of arrhythmias! No PVCs are seen.

Tachycardia 72

Tachycardia Arrhythmia Ablation Atrial Flutter 72

Dr. Smith's ECG Blog

FEBRUARY 4, 2025

Circulation , 143 (10), 10621065. & Josephson, M. Paroxysmal atrioventricular block. Heart Rhythm , 6 (8), 12291234. link] Pillai, A., Ellenbogen, K. & Padala, S. A tale of 2 blocks. Figure-1: I've labeled today's continuous rhythm strip.

Pacemaker 84

Pacemaker Bradycardia Document Heart Rhythm 84