Dr. Smith's ECG Blog

JANUARY 2, 2025

It should be kept in mind that on occasions, beta-one agonist can result in increased ventricular ectopy e.g., in severe myocardial ischemia (by increasing myocardial demand), or sometimes with congenital long-QT syndrome. Smith, this can be accomplished by either using beta-one agonists or temporary transvenous pacing.

Tachycardia 116

Tachycardia Cardiomyopathy Blog Bradycardia 116

Dr. Smith's ECG Blog

OCTOBER 18, 2023

She spontaneously converted (Defibrillation was not performed). Most such rhythms in the setting of ischemia are VF and will not convert without defibrillation. NT-pro-BNP peaked at 4831, consistent with heart failure. Acute ischemia? After about 90 seconds of chest compressions she awoke.

Cardiac Arrest 122

Cardiac Arrest Tachycardia Cardiomyopathy Bradycardia 122

Dr. Smith's ECG Blog

MARCH 15, 2023

We examined the effect of ibutilide, a class III antiarrhythmic agent, on the energy requirement for atrial defibrillation and assessed the value of this agent in facilitating cardioversion in patients with atrial fibrillation that is resistant to conventional transthoracic cardioversion.

Atrial Fibrillation 52

Atrial Fibrillation AFIB Arrhythmia Exercise 52

MIBHS

OCTOBER 31, 2024

Dilation: The chambers of the heart expand, making the walls thinner. Both forms of enlargement may compromise the heart’s ability to pump blood efficiently, leading to further complications like heart failure. What Causes an Enlarged Heart? Here are some of the most common causes: 1.

Blood Pressure 52

Blood Pressure Blood Clot Heart Valves Heart Rhythm 52

Dr. Smith's ECG Blog

OCTOBER 20, 2024

The first task when assessing a wide complex QRS for ischemia is to identify the end of the QRS. The ST segment changes are compatible with severe subendocardial ischemia which can be caused by type I MI from ACS or potentially from type II MI (non-obstructive coronary artery disease with supply/demand mismatch). What do you think?

Cardiogenic Shock 128

Cardiogenic Shock Ischemia Chest Pain Cardiac Arrest 128

Frontiers in Cardiovascular Medicine

FEBRUARY 6, 2024

Risk stratification of cardiovascular death and treatment strategies in patients with heart failure (HF), the optimal timing for valve replacement, and the selection of patients for implantable cardioverter defibrillators are based on an echocardiographic calculation of left ventricular ejection fraction (LVEF) in most guidelines.

Defibrillator 64

Defibrillator Heart Failure Ischemia 64

Dr. S. Venkatesan MD

FEBRUARY 20, 2024

SCD is the leading cause of mortality in heart failure. Tackling SCD was in God’s domain, until the brilliance of Dr. Michel Mirowski shrunk the defibrillator and implanted it under the chest in 1980. (Dr. Bardy GH, Lee KL, Mark DB, Poole JE, Sudden Cardiac Death in Heart Failure Trial (SCD-HeFT) Investigators.

Defibrillator 52

Defibrillator Heart Failure Sudden Cardiac Death Cardiomyopathy 52