Cardiac Rhythm and Pacemaker
Pre-operatively all patients were in normal sinus rhythm except one patient who had right bundle branch block (RBBB). In immediate post-operative period 22 patients came in NSR, 4 patients developed left bundle branch block (LBBB), in two patients it reverted to narrow QRS in ICU whereas in two patients LBBB persisted in follow-up. The patient having RBBB pre-operatively, developed complete heart block in immediate post-operative period which recovered on 6thpost-operative day, but RBBB persisted.