In the remaining studies, widened QRS complexes were most commonly attributed to RBBB or an unspecific ... (most commonly nonsustained SVT, atrial fibrillation and sinus bradycardia).
Eleven studies describing sinoatrial (SA) nodal, atrioventricular (AV) nodal or infra-Hisian conduction parameters in the setting of cocaine use were found. Fourteen studies and two case series ...