• Variability of forearm collateral circulation: An observational study of serial hand plethysmography testing

    Abstract

    Objectives

    Evaluation of plethysmography as a reliable triage tool to access collateral circulation in the hand prior to transradial access.

    Background

    Hand plethysmographic testing has been used for access site triage prior to cardiac catheterization despite a lack of data supporting its result's stability.

    Methods

    Cohort of consecutive outpatients presenting for evaluation prior to cardiac catheterization underwent hand plethysmographic testing at the beginning of the office visit and before discharge. Demographics and clinical data was recorded.

    Results

    Hands (N = 887) in 445 patients were evaluated using the Barbeau plethysmography technique. Barbeau Test (BT) patterns A, B, C, and D were observed in 58%, 30%, 8% and 4% on initial evaluation. On preliminary evaluation, 780 (88%) hands had a “low-risk” pattern (A or B) and 107 (12%) hands had a “high-risk” pattern (C or D). Repeat evaluation performed 50 ± 26 min later revealed a ‘low-risk’ pattern in 809 (91%) hands with 78 (9%) of hands showing a persistent “high risk” pattern. In 29 (27%) high-risk hands, spontaneous conversion to pattern B within <1 h occurred. Reverse Barbeau Test (RBT) at baseline showed pattern A, B, C and D in 95.9%, 2.8%, 1% and .4% respectively. There was no significant change in RBT upon follow-up evaluation. Strength of the radial artery pulsation was significantly associated with the pattern of RBT and the strength of ulnar pulsation was associated with the results of the BT.

    Conclusions

    Plethysmographic testing of forearm circulation demonstrates variability over short intervals suggesting poor reliability for access site triage.

    Highlights

     

    • Serial testing of hand plethysmographic (Barbeau Test) was completed test result durability.
    • >25% of patients initial showing higher risk for ischemia patterns were low risk on reexamination.
    • Barbeau Testing appears to give unstable results over <1 h.

    Source:

    Cardiovascular Revascularization Medicine, 2018-10-01, Volume 19, Issue 7, Pages 766-770, Copyright © 2018 Elsevier Inc.

     

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