Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1966 Jul;18(1):90-9.
doi: 10.1016/0002-9149(66)90200-1.

A simple test of cardiac function based upon the heart rate changes induced by the Valsalva maneuver

A B Levin

A simple test of cardiac function based upon the heart rate changes induced by the Valsalva maneuver

A B Levin. Am J Cardiol. 1966 Jul.
No abstract available

PubMed Disclaimer

LinkOut - more resources