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.
Normal electrocardiographic (ECG) adaptations during pregnancy. ECG changes in normal pregnancy include a reduction in the mean values of PR interval (C), sinus tachycardia (A), left axis deviation (D), inverted or flattened T-waves, and a Q-wave in lead DIII (B) [21].
