Fig. 1
From: Dynamic changes of atrioventricular conduction during Covid-19 infection: Does inflammation matter?
A. ECG at admission showed first degree AV block with narrow QRS duration, B. At second day hospitalization showed a 2:1 alternating with Mobitz 1 AV Block, C. On the 9th day of hospitalization, complete AV block with idioventricular escape rhythm occurred suggesting infra-His block, D. His bundle pacemaker implantation resulted in narrow QRS duration and pseudo-delta wave preceded with pacing spike resembling non-selective His bundle pacing