Medscape1d
ECG Challenge: Possible Problems With a Pacemaker
A 76-year-old woman presents with a persistently rapid heart rate that she attributes to her pacemaker. What does the ECG show?
ahajournals.org27d
Malignant ST-Segment–Elevation in a Young Man With Syncope: Important Clues Hidden in Diagnostic Traps
ECG (Figure 1) revealed atrial fibrillation with a rapid ventricular rate of 167 bpm, incomplete right bundle branch block, frequent ventricular contractions, and a prolonged QTc. The ECG also ...
Medscape29d
Atrial Overdrive Pacing Inducing QRS Complexes of Varying Duration in a Patient with Recurrent Syncope. What is the Mechanism?
rate-dependent bundle branch block. In summary, atypical Wenckebach-type second-degree in the left bundle branch is the more plausible electrophysiological mechanism involved in the EKG findings ...