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.
Individual action potential duration (APD) restitution and summary APD restitution. Left, APD at 80% repolarization (APD80) at various basic cycle lengths (BCL) from failing (blue lines, F) and nonfailing (red lines, NF) human hearts. Right, averaged APD80 of failing and nonfailing hearts. Because not every heart was paced faster than BCL of 500 ms, only results for cycle lengths from 500 to 2,000 ms are shown. *P < 0.05 for the comparison between failing and nonfailing groups.
