Dr. Smith's ECG Blog

JANUARY 9, 2024

She had a single chamber ICD/Pacemaker implanted several years prior due to ventricular tachycardia. Answer : The ECG above shows a regular wide complex tachycardia. Said differently, the ECG shows a rather slow ventricular tachycardia with a 2:1 VA conduction. Cardiac output (CO) was being maintained by the tachycardia.

Tachycardia 105

Tachycardia Electrophysiology Atrial Flutter Ischemia 105

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

MAY 7, 2024

Implantable cardioverter defibrillator (ICD) prevents sudden cardiac death (SCD) in patients with ischemic cardiomyopathy (ICM). Catheter ablation has been shown to effectively reduce ventricular tachycardia (VT) recurrence, yet its efficacy in patients without an ICD implantation remains uncertain.

Sudden Cardiac Death 45

Sudden Cardiac Death Tachycardia Cardiomyopathy Ablation 45

HeartRhythm

APRIL 30, 2024

Tachycardia-induced cardiomyopathy (TIC) is a unique cardiomyopathy, which is potentially reversible. Due to the presence of tachyarrhythmias in various cardiomyopathies, differentiating TIC from other non-reversible conditions can be challenging.

Cardiomyopathy 40

Cardiomyopathy Tachycardia Transplant Biomarkers 40

Ken Grauer, MD

JUNE 22, 2024

The ECG in Figure-1 — was obtained from a middle-aged woman with positional tachycardia and diaphoresis with change of position from suprine to sitting. My THOUGHTS on the ECG in Figure-1: The rhythm is sinus tachycardia at ~105/minute ( ie, The R-R interval is regular — and just under 3 large boxes in duration ).

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Blog Ischemia Tachycardia Cardiomyopathy 171

HeartRhythm

APRIL 30, 2024

Tachycardia-induced cardiomyopathy (TICM) is a reversible impairment of the left ventricular (LV) systolic function caused by persistent tachyarrhythmias. It is often difficult to identify macroscopic scar in patients with TICM by cardiac magnetic resonance imaging (MRI).

Tachycardia 40

Tachycardia Cardiomyopathy 40

HeartRhythm

APRIL 30, 2024

The ventricular tachycardia (VT) substrate in patients with non-ischemic cardiomyopathy (NICM) is complex in distribution and intramural location. Myocardial lipomatous metaplasia (LM) is vital to post-infarct VT circuitry, but not investigated in NICM VT circuitry yet.

Tachycardia 40

Tachycardia Cardiomyopathy 40

Frontiers in Cardiovascular Medicine

DECEMBER 18, 2023

Cardiac sarcoidosis (CS), a rare condition characterized by non-caseating granulomas, can manifest with symptoms such as atrioventricular block and ventricular tachycardia (VT), as well as mimic inherited cardiomyopathies. A 58-year-old woman presented with sustained VT with a prior diagnosis of hypertrophic cardiomyopathy (HCM).

Cardiomyopathy 69

Cardiomyopathy Cardiac Arrest Defibrillator Electrophysiology 69

Journal of Cardiothoracic Surgery

SEPTEMBER 22, 2024

Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a family inherited cardiomyopathy associated with ventricular arrhythmias. With the development of molecular biology, histology, imaging, and other dia.

Cardiomyopathy 52

Cardiomyopathy Tachycardia Arrhythmia Ablation 52

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 83

Tachycardia Cardiomyopathy Electrocardiogram Article 83

HeartRhythm

JUNE 27, 2024

Many genetic non-ischemic dilated cardiomyopathies (NICM) cause ventricular tachycardias (VT) originating from scar substrate identified as areas of low electrogram voltage. Substrate locations vary and the causes of scar are not well defined.

Tachycardia 40

Tachycardia Cardiomyopathy 40

HeartRhythm

NOVEMBER 10, 2023

In arrhythmogenic right ventricular cardiomyopathy (ARVC), risk of atrial arrhythmias (AA) persists after ventricular tachycardia (VT) ablation.

Tachycardia 40

Tachycardia Arrhythmia Cardiomyopathy Ablation 40

HeartRhythm

APRIL 30, 2024

Catheter ablation is an effective tool to reduce ventricular tachycardia (VT) burden. There is a lack of robust data studying the intraprocedural characteristics and outcomes of VT ablation in patients with non-ischemic (NICM) versus ischemic cardiomyopathy (ICM).

Tachycardia 40

Tachycardia Cardiomyopathy Ablation Outcomes 40

HeartRhythm

APRIL 30, 2024

Ventricular Tachycardia (VT) is an important cause of morbidity and mortality in structural heart Disease. Current literature is limited in direct comparison of VT in ischemic (ICM) compared to non-ischemic cardiomyopathy (NICM).

Tachycardia 40

Tachycardia Cardiomyopathy Heart Disease Ablation 40

HeartRhythm

APRIL 30, 2024

Catheter ablation (CA) is effective in the treatment of ventricular tachycardia (VT). Although some data suggest patients with non-ischemic cardiomyopathy (NCIM) have worse outcomes compared to those with an ischemic etiology (ICM), direct comparisons are scarcely reported.

Tachycardia 40

Tachycardia Cardiomyopathy Ablation Outcomes 40

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

Heart BMJ

MAY 23, 2024

He had a background of arrhythmic right ventricular cardiomyopathy. He had previously undergone the placement of a dual-chamber implantable cardioverter-defibrillator for atrioventricular block and ventricular tachycardia (VT). Clinical introduction A man in his 50s presented to the emergency department with palpitations.

Tachycardia 52

Tachycardia Defibrillator Cardiomyopathy 52

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

Ken Grauer, MD

DECEMBER 12, 2024

Conclusion: Assuming none of the above exceptions exist the ECG in Figure-1 has to be presumed VT until proven otherwise. == C ASE C onclusion: Today's patient was hemodynamically stable in association with the ECG in Figure-1.

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Blog Tachycardia Heart Disease Congenital Heart Disease 82

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

Journal of Cardiovascular Electrophysiology

AUGUST 26, 2024

Abstract Introduction Due to its unique features, pulsed field ablation (PFA) could potentially overcome some limitations of current radiofrequency (RF) ventricular tachycardia (VT) ablation. Methods Two patients with ischemic cardiomyopathy and previously failed RF VT ablations were treated with PFA.

Ablation 40

Ablation Tachycardia Cardiomyopathy Technology 40

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

EMS 12-Lead

AUGUST 18, 2024

2. Baseline fibrotic substrate from dilated cardiomyopathy leading to VT. I interpreted the ECG as VT with two primary etiological possibilities: 1. Abrupt plaque ulceration of Type 1 ACS leading to VT. From a clinical standpoint I reconciled the first possibility as most probable since the chest discomfort came first.

Tachycardia 59

Tachycardia Blog RN Echocardiogram 59

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).

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Tachycardia Arrhythmia Heart Disease Sudden Cardiac Death 90

HeartRhythm

DECEMBER 26, 2024

Surgical disarticulation of the right ventricular (RV) free wall has been described by Guiraudon and colleagues as an effective therapy for refractory ventricular tachycardia (VT) in arrhythmogenic right ventricular cardiomyopathy (ARVC).1

Cardiomyopathy 45

Cardiomyopathy Tachycardia Ablation 45

Heart BMJ

AUGUST 26, 2024

In all-comers with significant VAs, the pooled rate of SHD post-CMR evaluation was 39% (24% in the subgroup of premature ventricular contractions and/or non-sustained ventricular tachycardia vs 63% in the subgroup of more complex VAs). A change in diagnosis after use of CMR ranged from 21% to 66% with a pooled average of 35% (29%–41%).

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Arrhythmia Cardiomyopathy Heart Disease Tachycardia 96

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.

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Cardiac Arrest Ischemia Tachycardia Defibrillator 117

Dr. Smith's ECG Blog

OCTOBER 18, 2023

The above ECGs show the initiation and continuation of a polymorphic ventricular tachycardia. Polymorphic ventricular tachycardia can be ischemic, catecholaminergic or related to QT prolongation. There was hyperkinesis of the basal segments and findings were interpreted as typical of takotsubo cardiomyopathy. Learning points: 1.

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Cardiac Arrest Tachycardia Cardiomyopathy Bradycardia 111

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 Pharmacology Ablation Arrhythmia 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 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.

Cardiomyopathy 45

Cardiomyopathy Ablation Atrial Flutter Arrhythmia 45

The New England Journal of Medicine

OCTOBER 30, 2024

A 69-year-old man with a history of MI and cardiomyopathy presented with 2 days of dyspnea. Regular tachycardia (124 beats per min), diaphoresis, and rales were present. A diagnosis was made.

Myocardial Infarction 62

Myocardial Infarction Tachycardia Cardiomyopathy 62

HeartRhythm

APRIL 30, 2024

Prior studies have shown efficacy of noninvasive radiation therapy using stereotactic body radiation therapy (SBRT) for treatment-refractory ventricular tachycardia (VT). Data is limited on comparison of ischemic (ICM) and nonischemic cardiomyopathy (NICM).

Tachycardia 40

Tachycardia Cardiomyopathy 40

Dr. Smith's ECG Blog

MARCH 11, 2012

Here was his initial ECG: Regular Wide Complex Tachycardia. Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Approach to Wide Complex Tachycardia Unstable – Shock it 12-lead if at all possible --Unstable defined by : Chest Pain Shock Hypotension Very dyspneic Pulmonary Edema Stable Get a 12-lead ECG Sinus?

Tachycardia 52

Tachycardia Chest Pain Pulmonary Blood Pressure 52

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

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

HeartRhythm

SEPTEMBER 19, 2024

In hypertrophic cardiomyopathy (HCM), 48-hour ambulatory monitoring has been standard practice to detect nonsustained ventricular tachycardia (NSVT), a sudden death risk marker. Extended wear ambulatory ECG devices have more recently utilized for monitoring HCM patients.

Cardiomyopathy 40

Cardiomyopathy Tachycardia 40