February 4, 2004 — Is it time to redefine the role of QRS duration as a predictor of response to cardiac resynchronization therapy (CRT)? According to 2 recent studies published in the Journal of the ...
There is a regular rhythm at a rate of 30 beats/min. The QRS complex is wide (0.16 sec). The axis is normal between 0° and +90° (positive QRS complex in leads I and aVF). The QRS complex resembles a ...
The ECG findings of hyperkalemia change as the potassium level increases. From earliest to latest, the ECG findings include: Peaked T waves best seen in the precordial leads, shortened QT interval and ...
The three irregularly irregular rhythms are atrial fibrillation, atrial flutter with variable conduction and multifocal atrial tachycardia (similar to wandering atrial pacemaker). Atrioventricular (AV ...
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