選択した画像 sinus rhythm with bundle branch block 251169-Sinus rhythm with left bundle branch block
This occurs when a patient with fixed bundle branch block during sinus rhythm develops a reentrant tachycardia in the bundle branch system with a circuit with anterograde conduction over the non blocked bundle branch amd interventricular septal tissue, and retrograde conduction over the bundle branch which is anterogradely blocked during sinus rhythmSinus rhythm with a rate of 75 The QRS duration is wide at 146 ms There is a rsR' complex in lead V1 and a slurred Swave in lead I Bifascicular BlocksWide QRS complex (≥ 1 ms) Terminal Rwave in lead V1; Pediatric Right Bundle Branch Block Background Pathophysiology Etiology Sinus rhythm with left bundle branch block