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
. 1988;14(2):103-10.
doi: 10.1016/0301-5629(88)90176-7.

Resistance index, blood flow velocity, and resistance-area product in the cerebral arteries of very low birth weight infants during the first week of life

D H Evans  1 , M I Levene, D B Shortland, L N Archer
Affiliations

Resistance index, blood flow velocity, and resistance-area product in the cerebral arteries of very low birth weight infants during the first week of life

D H Evans et al. Ultrasound Med Biol. 1988.

Erratum in

  • Ultrasound Med Biol 1988;14(4):309

Abstract

Cerebral artery Doppler ultrasound recordings, and intra-arterial pressure measurements have been made from 27 very low birth weight infants during the first week of life. These data were used to calculate Pourcelot's resistance index (RI), mean blood flow velocity, and resistance-area product (RAP), in both the anterior and middle cerebral arteries. There was a good degree of correlation between recordings from different sites on the same occasion, but absolute values were site dependent. Over the first three days of life there was a significant increase in blood flow velocity in each of the vessels, and a significant fall in RI and RAP.

PubMed Disclaimer