Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
ECG showing true left bundle branch block: QRS duration 160 myocardial scar (male), QS in lead V1 and rS in lead V2, plus mid-QRS notching in all involved leads (V1 and V2; V5 and V6; DI and aVL). QRS complexes do not show fragmentation according to Das' criteria. SSc is 10.
