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.
QRST integral changes as a result of RV pacing. A-B. Representative QRST integral maps are shown during NSR and cardiac memory. C. All subjects exhibit an evolution from positive to negative QRST integral in the apical-lateral RV after RV pacing. D. All subjects exhibit an increase in QRST integral in the basal-lateral LV after RV pacing.
