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Doppler blood velocity waveforms and the relation to peripheral resistance in the brachial artery.
Author(s) -
Legarth J,
Nolsoe C
Publication year - 1990
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1990.9.8.449
Subject(s) - medicine , peripheral resistance , doppler effect , brachial artery , vascular resistance , cardiology , pulsatility index , peripheral , linear regression , hemodynamics , blood pressure , statistics , pregnancy , cardiac output , mathematics , fetus , physics , astronomy , biology , genetics
The relationship between peripheral resistance and the Doppler blood velocity indices‐‐pulsatility index (PI), A/B ratio, resistance index (RI), and the minimum velocity (Vmin)‐‐was evaluated in the brachial arteries of five young women. All the indices showed a very good correlation with resistance (r greater than 94%); the regression line for both PI and A/B were linear, whereas the relationships between resistance and RI, and resistance and Vmin, were best described by a logarithmic and by power function, respectively. Although the women were carefully selected to be as alike as possible, there were significant differences in the individual slopes of the regression lines.