Response to brief (10 min) DA compressions, expressed as the percent change in PVR from baseline for the 3 study conditions (DA, n = 9; fasudil, n = 8; DA+fasudil, n = 7). As shown, fasudil did not augment the vasodilator effects during brief DA compression. Values are means ± SE. *P < 0.05. NS, not significant.