Journal of Cardiothoracic Surgery

JANUARY 6, 2025

Tachycardia-induced cardiomyopathy refers to changes in cardiac structure and function that result from rapid arrhythmia and can manifest as a continuous or recurrent event. Cardiomyopathy induced by atrial ta.

Cardiomyopathy 40

Cardiomyopathy Tachycardia Arrhythmia Ablation 40

HeartRhythm

APRIL 30, 2024

Decisions as to the scope of workup for pathologic cardiac substrates in patients with ventricular arrhythmias can be challenging. Recent data suggests that in this scenario, disease specific genetic arrhythmia panels may miss heritable diagnoses over arrhythmic plus cardiomyopathy panels.(1)

Arrhythmia 40

Arrhythmia Cardiomyopathy Tachycardia 40

Dr. Smith's ECG Blog

JULY 25, 2024

VF should make you think of ischemia, cardiomyopathy (especially scar from old MI), or one many other cardiac but non-ischemic etiologies. Confirmation of sinus tachycardia should be easy to verify when the heart rate slows a little bit ( as the patient's condition improves ) — allowing clearer definition between the T and P waves.

Cardiac Arrest 124

Cardiac Arrest Ischemia Tachycardia Defibrillator 124

HeartRhythm

APRIL 30, 2024

Wild-type transthyretin amyloid cardiomyopathy (ATTRwt-CM) is often accompanied by atrial fibrillation (AF), atrial flutter (AFL), and atrial tachycardia (AT), which are difficult to control because beta-blockers and antiarrhythmic drugs can worsen heart failure (HF).

Atrial Flutter 40

Atrial Flutter Atrial Fibrillation Tachycardia Cardiomyopathy 40

HeartRhythm

APRIL 30, 2024

Belhassen’s ventricular tachycardia is an uncommon arrhythmia in infants. Originating near the left posterior fascicle, it is initiated by supraventricular ectopy or sinus tachycardia and is uniquely sensitive to verapamil. Use of verapamil in infants is controversial due to risk of severe hemodynamic compromise.

Tachycardia 40

Tachycardia Arrhythmia Cardiomyopathy Ablation 40

HeartRhythm

APRIL 30, 2024

Supraventricular tachycardias are the most common arrhythmias that occur during pregnancy. Pharmacologic therapy is often preferred in pregnant patients. When pharmacologic therapy fails, fluoroless catheter ablation utilizing electroanatomic mapping systems and intracardiac echocardiography (ICE) may be considered.

Tachycardia 40

Tachycardia Ablation Pharmacology Arrhythmia 40

HeartRhythm

APRIL 2, 2024

Cheng and Zhang to our paper1, we note that despite ARVC being a relatively uncommon cardiomyopathy, we uniquely report on a large clinical experience with very long-term follow-up after VT ablation and confirm a high incidence of atrial flutter (AFL) and the effectiveness and low risk of catheter ablation of AFL. In response to Drs.

Ablation 45

Ablation Cardiomyopathy Atrial Flutter Arrhythmia 45

Dr. Smith's ECG Blog

JUNE 23, 2023

A 50-something male with unspecified history of cardiomyopathy presented in diabetic ketoacidosis (without significant hyperkalemia) with a wide complex tachycardia and hypotension. Analysis: there is a wide complex tachycardia. This was the interpretation I put into the system: WIDE COMPLEX TACHYCARDIA. It is regular.

Tachycardia 52

Tachycardia Cardiomyopathy Arrhythmia Diabetes 52

Ken Grauer, MD

DECEMBER 12, 2024

The only exceptions that I'm aware of to the above-cited morphologic criteria for VT are: i ) IF the rhythm is antidromic AVRT in which case the impulse travels forward over an AP ( A ccessory P athway ) in a patient with WPW, therefore resulting in a regular WCT rhythm that resembles VT ( For more on the various arrhythmias in patients with WPW (..)

Blog 82

Blog Tachycardia Heart Disease Congenital Heart Disease 82

Frontiers in Cardiovascular Medicine

JANUARY 8, 2025

IntroductionFocal atrial tachycardia (FAT) is predominant in the pediatric population. A 12-lead electrocardiogram revealed a narrow QRS complex tachycardia with a rate of 157 beats per minute and a prolonged RP relationship. Echocardiography indicated a severely reduced ejection fraction of 22%.

Tachycardia 40

Tachycardia Ablation Cardiomyopathy Electrocardiogram 40

Dr. Smith's ECG Blog

OCTOBER 23, 2023

An Initial ECG was performed: Initial ECG: Sinus tachycardia with prolonged QT interval (QTc of 534 ms by Bazett). She was admitted to the ICU where subsequent ECGs were performed: ECG at 12 hours QTc prolongation, resolution of T wave alternans ECG at 24 hours Sinus tachycardia with normalized QTc interval. No ischemic ST changes.

Tachycardia 131

Tachycardia Cardiac Arrest ICU Blog 131

Journal of Cardiothoracic Surgery

APRIL 1, 2024

Atrial tachycardia (AT) originating from the left atrial appendage (LAA) is uncommon and the most difficult arrhythmia to eliminate. Therefore, we present the case of a 5-year-old girl with tachycardia-induced.

Tachycardia 40

Tachycardia Electrophysiology Arrhythmia Cardiomyopathy 40

Dr. Smith's ECG Blog

DECEMBER 23, 2019

They had a history of non-ischemic cardiomyopathy (EF 30%), as well as PCI with one stent. Initial ECG in the ED: Presenting ECG : Wide-complex tachycardia at a rate about 200. This is overwhelmingly likely to be ventricular tachycardia, even if only age and medical history are considered.

Tachycardia 52

Tachycardia Atrial Flutter Cardiomyopathy Atrial Fibrillation 52

Dr. Smith's ECG Blog

AUGUST 13, 2020

His previous echo one month prior shows the same thing: “consistent with old infarct in LAD vascular territory, with EF 45%” "I think there is something else causing his tachycardia which is exaggerating his EKG findings and mimicking an acute myocardial infarction." He had a h/o ischemic cardiomyopathy and right MCA stroke.

Tachycardia 52

Tachycardia AFIB Cardiogenic Shock Myocardial Infarction 52

Circulation: Arrhythmia and Electrophysiology

JUNE 5, 2024

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Epicardial approach in ventricular tachycardia (VT) ablation is still regarded as a second-step strategy, due to the risk of complications. The epicardial approach was considered useful if epicardial ablation was performed after epicardial mapping.

Ablation 40

Ablation Tachycardia Heart Disease Cardiomyopathy 40

Dr. S. Venkatesan MD

APRIL 28, 2024

In all probability, this dilation is a form of atrial tachycardia and atrial cardiomyopathy. Spatial relationship of sites for atrial fibrillation drivers and atrial tachycardia in patients with both arrhythmias July 2017 International Journal of Cardiology 248(3) AF begets AF. Implications for electrophysiologists.

Atrial Fibrillation 75

Atrial Fibrillation Bicuspid/Mitral Pulmonary Ablation 75

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

Circulation

NOVEMBER 11, 2024

This can initiate ventricular arrhythmias like polymorphic ventricular tachycardia (PMVT). Background:R-on-T phenomenon occurs when an electrical stimulus is delivered at a critical point during ventricular repolarization.

Tachycardia 40

Tachycardia Pacemaker Defibrillator Atrial Fibrillation 40

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

Dr. Smith's ECG Blog

SEPTEMBER 16, 2024

The patient was diagnosed with stress cardiomyopathy. Widespread T wave inversions and prolongation of the QT interval is not uncommon in Takotsubo cardiomyopathy. The QTc then gradually shortened over the course of several days as is usual for stress cardiomyopathy. Potassium was 4,8 mmol/l. ( ref 3,5-4,6 mmol/l ).

Cardiac Arrest 68

Cardiac Arrest Cardiomyopathy Arrhythmia Atrial Fibrillation 68

Ken Grauer, MD

FEBRUARY 28, 2023

The ECG and long lead II rhythm strip in Figure-1 — was obtained from a COVID positive patient with persistent tachycardia not responding to Diltiazem. Figure-1: The initial ECG — obtained from a patient with persistent tachycardia. ( Takotsubo (ie, Stress ) Cardiomyopathy. How would YOU interpret this tracing?

Blog 78

Blog COVID-19 AFIB Pulmonary 78

Dr. Smith's ECG Blog

SEPTEMBER 7, 2020

Here is his 12-lead: There is a wide complex tachycardia with a rate of 257, with RBBB and LPFB (right axis deviation) morphology. Read about Fascicular VT here: Idiopathic Ventricular Tachycardias for the EM Physician Case Continued He was completely stable, so adenosine was administered. See Learning point 1 below. Arch Intern Med.

Tachycardia 52

Tachycardia Heart Disease Dysrhythmia Ablation 52

Ken Grauer, MD

JULY 15, 2023

The finding of all negative QRS complexes in leads V3-thru- V6 therefore strongly suggests that the arrhythmia-associated impulse is not traveling over an AP ( Steurer et al — Clin. Given the rapid rate of the tachycardia and the amorphous shape of the QRS — the decision was made to sedate the patient and cardiovert.

Blog 78

Blog Coronary Angiogram Cardiomyopathy Ischemia 78

Wellnest

JUNE 19, 2023

The deep learning algorithm helps segment the left ventricle predicting cardiomyopathy and ejection fraction. Similarly, you may use our , app to adjust the paper speed along with amplification to read the slightest changes, especially for conditions like tachycardia and bradycardia.

Technology 52

Technology Cardiac Arrest Innovation Coronary Artery Disease 52

Ken Grauer, MD

APRIL 9, 2023

NOTE: As discussed in detail in ECG Blog #108 — " A IVR" is an "enhanced" ventricular ectopic rhythm that occurs faster than the intrinsic ventricular escape rate ( which is typically between 20-40/minute ) — but slower than hemodynamically significant Ventricular Tachycardia ( ie, VT at rates >130-140/minute ).

Blog 78

Blog Chest Pain Arrhythmia Cardiac Arrest 78

All About Cardiovascular System and Disorders

FEBRUARY 14, 2024

Fragmented QRS is a marker of myocardial scar and consequent arrhythmias in ischemic and nonischemic cardiomyopathy. Ebstein’s anomaly may be associated with right sided accessory pathway in ventricular pre-excitation, that is WPW syndrome, with or without atrioventricular re-entrant tachycardia.

Congenital Heart Disease 52

Congenital Heart Disease Congenital Heart Disease VSD 52

Dr. Smith's ECG Blog

NOVEMBER 28, 2022

The ECG shows sinus tachycardia, a narrow, low voltage QRS with alternating amplitudes, no peaked T waves, no QT prolongation, and some minimal ST elevation in II, III, and aVF (without significant reciprocal STD or T wave inversion in aVL). It is difficult to tell if there is collapse during diastole due to the patient’s tachycardia.

Tachycardia 40

Tachycardia Pericarditis Ultrasound Blood Pressure 40

Dr. Smith's ECG Blog

JUNE 2, 2023

She was awake, alert, well perfused, with normal mental status and overall unremarkable physical exam except for a regular tachycardia, possible rales at both bases, some mild RUQ abdominal tenderness. Thus, I believe it is a regular, monomorphic, wide complex tachycardia. Or it could simply still be classic VT. RVEF 100 ml/m2.

Tachycardia 95

Tachycardia Cardiomyopathy Electrocardiogram Article 95

Dr. Smith's ECG Blog

JANUARY 23, 2024

Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. The granulomatous inflammation affects the heart, causing an infiltrative cardiomyopathy The most common manifestations of cardiac sarcoidosis are atrioventricular (AV) block and ventricular tachyarrhythmias (VT).

Tachycardia 107

Tachycardia Arrhythmia Heart Disease Sudden Cardiac Death 107

Frontiers in Cardiovascular Medicine

MARCH 27, 2024

Introduction Danon disease is an X-linked disorder caused by pathogenic variants in lysosome-associated membrane protein 2 ( LAMP2 ) gene, typically characterized by the triad of hypertrophic cardiomyopathy, myopathy, and intellectual disability. However, many patients may not present the typical presentation, especially in the early stage.

Arrhythmia 59

Arrhythmia Atrial Flutter Tachycardia Atrial Fibrillation 59

Open Heart

APRIL 20, 2022

Objectives To describe a cohort of patients with arrhythmogenic left ventricular cardiomyopathy (ALVC), focusing on the spectrum of the clinical presentations. Twenty-one (41%) had normal echocardiogram, 13 (25%) a hypokinetic non-dilated cardiomyopathy (HNDC) and 17 (33%) a dilated cardiomyopathy (DCM).

Cardiomyopathy 52

Cardiomyopathy Chest Pain Sudden Cardiac Death Heart Failure 52

Dr. Smith's ECG Blog

SEPTEMBER 2, 2024

There are a number of things to look for in an ECG that can hint at arrhythmia as the cause of an apparent seizure. Arrhythmogenic cardiomyopathy Long QT syndrome Hypertrophic cardiomyopathy. There is a run of polymorphic ventricular tachycardia — which given the QT prolongation, qualifies as Torsades de Points ( TdP ).

Tachycardia 113

Tachycardia Blog Sudden Cardiac Death Arrhythmia 113

European Journal of Heart Failure

OCTOBER 11, 2023

Patients with early-stage non-ischaemic cardiomyopathy (early-NICM) were characterized with late gadolinium enhancement (LGE) cardiovascular magnetic resonance. Three subgroups were included: isolated left ventricular (LV) dilatation, non-dilated LV cardiomyopathy and early dilated cardiomyopathy (DCM).

Cardiomyopathy 40

Cardiomyopathy Outcomes Tachycardia Diabetes 40

HeartRhythm

JUNE 3, 2024

Recent advancements in catheter ablation for structural ventricular tachycardia (VT), such as high-density mapping and cardiac imaging-based detection of target areas, have significantly improved the efficacy of ablation procedures. These developments are likely to broaden the treatment scope to include patients with recurrent VT episodes.

Sudden Cardiac Death 40

Sudden Cardiac Death Tachycardia Ablation Defibrillator 40

European Journal of Heart Failure

FEBRUARY 26, 2024

Dilated cardiomyopathy with arrhythmic phenotype. Abstract Aims Dilated cardiomyopathy (DCM) with arrhythmic phenotype combines phenotypical aspects of DCM and predisposition to ventricular arrhythmias, typical of arrhythmogenic cardiomyopathy.

Cardiomyopathy 40

Cardiomyopathy Sudden Cardiac Death Arrhythmia Tachycardia 40

DAIC

APRIL 30, 2024

However, the risk of arrhythmias following this procedure is reportedly high. During the observation period, the researchers noted that arrythmias were very uncommon, with only two individuals experiencing transient tachycardia (fast pulse) in the first two weeks among the treatment group.

Transplant 105

Transplant Heart Transplant Myocardial Infarction Heart Attack 105

Frontiers in Cardiovascular Medicine

DECEMBER 13, 2023

Myocardial accumulation contributes to arrhythmia and sudden death, the most common cause of FD mortality. Here, we performed a retrospective study to evaluate current ILR utilisation in FD and quantify the burden of arrhythmia that was detected, which resulted in a modification of therapy.

Arrhythmia 56

Arrhythmia Tachycardia Cardiomyopathy 56