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

Dr. Smith's ECG Blog

SEPTEMBER 2, 2024

This episode self terminated before defibrillation was possible. mEq/L for Mg++ ) — given that ECF levels of these cations comprise only ~1-2% of total body stores ( Jahnen-Dechent and Ketteler — Clin Kidney J 5(Suppl 1):i3-i14, 2012 — and — Udensi and Tchounwou — Int J Clin Exp Physiol 4(3): 111-122, 2017 ). mEq/L for K+ and 1.76

Tachycardia 112

Tachycardia Blog Sudden Cardiac Death Arrhythmia 112

Dr. Smith's ECG Blog

MAY 6, 2019

Followup ECG: No Change Absence of evolution is the best evidence against ischemia as the etiology. I was taught that the tell-tale sign of ischemia vs an electrical abnormality was in the hx, i.e. chest pain for the ischemia and potential syncope for brugada. Ischemia/infarction. Cardioversion/defibrillation.

Chest Pain 52

Chest Pain STEMI Ischemia Myocardial Infarction 52

Dr. Smith's ECG Blog

JANUARY 30, 2019

Induced Brugada-type electrocardiogram, a sign for imminent malignant arrhythmias. Circulation, 117, 1890–1893. [3]: 3]: Lamelas P, Labadet C, Spernanzoni F, Lopez Saubidet C, and Alvarez PA. Brugada electrocardiographic pattern induced by fever. World Journal of Cardiology, 4(3): 84-86. [4]: 4]: Antzelevitch C and Brugada R.

Heart Rhythm 52

Heart Rhythm Sudden Cardiac Death Arrhythmia STEMI 52

Dr. Smith's ECG Blog

FEBRUARY 20, 2025

Although we lack details of events that followed Dr. Smith makes the key point that had this arrest witnessed by the medic team been the result of an acute cardiac event ( therefore, presumably VT or VFib ) prompt defibrillation by on-the-scene medics would most probably have resuscitated her.

STEMI 88

STEMI Hemorrhage Cardiac Arrest Tachycardia 88

Dr. Smith's ECG Blog

MARCH 8, 2025

It is possible there is microvascular dysfunction producing residual transmural ischemia. But this is most common when there is prolonged ischemia, and this patient had the fastest reperfusion imaginable! She was defibrillated perhaps 25 times. Defibrillation strategies for refractory ventricular fibrillation. McLeod, S.

Cardiomyopathy 74

Cardiomyopathy Myocardial Infarction Defibrillator Bradycardia 74