The second QRS complex (^) is wide (0.14 sec) and has an unusual morphology that is not typical for either a left or right bundle branch block. This QRS complex is not preceded by a P wave.

Geng and team described findings of the ECG performed upon her presentation in the emergency department as "a regular, relatively narrow, wide QRS complex tachycardia at a rate of 177/min, with a ...

The QRS complexes are wide (0.14 sec) and have an RBBB morphology with an RR' in V1 (→) and broad terminal S waves in leads I, V5-V6 (←). The axis is extremely left between -30° and -90 ...

Cardiac-resynchronization therapy (CRT) has been shown to reduce both mortality and heart-failure outcomes in patients with symptomatic heart failure, a reduced ejection fraction, and a wide QRS ...

Eligible heart failure patients with a wide QRS complex spent more time alive after use of a cardiac resynchronization therapy defibrillator (CRT-D) compared with an implantable cardioverter ...