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.
Depiction of the effects of preload on output from the RV to the pulmonary arteries. If preload is decreased due to venous dilation and pooling of the blood in the dilated venous system, there is decreased filling of the RV and decreased available volume for output
