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.
Measurement of systolic velocity and peak diastolic intra-aortic balloon pump (IABP)-augmented velocity. Examples of transcranial Doppler ultrasound waveform from the R middle cerebral arterial (MCA) without A and with B IABP counterpulsation. Note that the software automatically labeled “systolic velocity” is actually the peak diastolic IABP-augmented velocity (PDAV).
