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.
The curves of air pressure in the cuff (above) and the PPG signals, in the finger distal to the cuff (below) and in the contralateral finger (middle) as function of time. The PPG signal disappears for air pressure above the systolic blood pressure. Note the oscillometric air-pressure fluctuations in the air-pressure curve.
