Medscape

ECG Challenge: In the ED With Palpitations and Shortness of Breath

The QRS complexes are narrow and have a normal morphology. The axis is physiologically leftward with a positive QRS complex in lead I and II, and negative in lead aVF. The QRS complex voltage is low ...
Medscape

ECG Challenge: Is This an Effect of AFib Treatment?

The diagnosis is atrial tachycardia with variable (2:1 and 3:1) atrioventricular (AV) block and intraventricular conduction delay. The rhythm is regular at a rate of 72 beats/min, although one longer ...
EurekAlert!

Shrinking waveforms on electrocardiograms predict worsening health and death of hospitalized COVID-19 and influenza patients

Specific and dynamic changes on electrocardiograms (EKGs) of hospitalized patients with COVID-19 or influenza can help predict a timeframe for worsening health and death, according to a new Mount ...
Healio

Heart Blocks ECG 32

This ECG shows P waves that are not always associated with a QRS complex. This is called "AV dissociation" and occurs in complete heart block (a.k.a. 3rd degree heart block). In this situation, the P ...