Duplex ultrasound assessment of venous diameters, peak velocities, and flow patterns

Gregory L. Moneta, Geri Bedford, Kirk Beach, D. Eugene Strandness

    Research output: Contribution to journalArticle

    48 Scopus citations

    Abstract

    Duplex ultrasound was used to study the diameters, flow patterns, and peak blood flow velocities of the common femoral vein (CFV) in 12 normal subjects (mean age 35 years). Each subject was supine and non-weight-bearing on a tilt table and rotated in 10-degree increments from -10 degrees (head down) to +30 degrees (head up). Cross-sectional B-mode image was used to monitor continuously CFV diameter for 5 minutes in each position. Doppler flow patterns were recorded in longitudinal axis; heart rate and respiratory movements were also noted. CFV flow was affected by respiratory and cardiac events. At -10 degrees flow was primarily related to cardiac events, with flow increasing during diastole. At +30 degrees flow varied minimally with the cardiac cycle and was primarily respiration dependent, stopping at peak inspiration. Proceeding from -10 to +30 degrees the mean maximal CFV diameter corrected for body surface area increased 92% (0.47 ± 0.11 cm/m2 to 0.90 ± 0.16 cm/m2, p < 0.001), whereas peak flow velocity decreased from 41 ± 10 cm/sec to 13 ± 5 cm/sec, p < 0.001. There was a linear, inverse relationship between mean peak velocity and mean corrected diameter, r = -0.99. The study confirms the multiple influences on venous flow patterns and establishes a quantitative relationship between venous diameters and flow velocities.

    Original languageEnglish (US)
    Pages (from-to)286-291
    Number of pages6
    JournalJournal of vascular surgery
    Volume8
    Issue number3
    DOIs
    StatePublished - Sep 1988

    ASJC Scopus subject areas

    • Surgery
    • Cardiology and Cardiovascular Medicine

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