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.
LA volumes measured by biplane area-length method. Volume curve was obtained by continuous speckle tracking. Minimum volume (LAV min) is measured at the closure of the mitral valve in end-diastole. Maximum volume (LAV max) is measured just before the opening of the mitral valve in end-systole. Pre-A volume (LAV pre-A) is measured at the onset of the P-wave on electrocardiogram.
This work is licensed under a