Fig. 3.
FBF variations in response to acetylcholine infusion into the brachial artery in patients and controls.
Acetylcholine (4, 8, and 16 μg/min) was infused into the brachial artery, and FBF variations expressed in milliliters per minute per 100 milliliters were recorded using VOP. ANOVA detected a significant difference between the 2 groups (*, P = .02). ▵, patients; ▪, controls.