Key result
Brachial artery occlusion reduces collateral arterial resistance by ~45%.
Why the study?
A method for estimating resistance in collateral arteries around the elbow was needed to study physiological and pharmacological responses of small arteries in humans.
p-value: p=<0.01
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New collateral resistance index now measurable; leaves open its diagnostic value in peripheral disease.
Robinson et al. (1981) studied this question. Brachial artery occlusion, ergotamine tartrate, and glyceryl trinitrate vs. Baseline/initial resistance was evaluated on Change in collateral arterial resistance (p=<0.01). Brachial artery occlusion reduced collateral arterial resistance by an average of 45% (P<0.01), while ergotamine increased it by 135% and glyceryl trinitrate reduced it by 45%.
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