Figure 5.

Effects of 0.4 mg tamsulosin and 5 mg terazosin on phenylephrine-induced alterations of diastolic blood pressure (upper panel), mean arterial pressure (middle panel) and total peripheral resistance (lower panel) as determined 5 h following medication. Data are based on the highest phenylephrine dose achieved during both active treatments (‘I_act’, for calculation see Figure 1) and are shown as medians with upper and lower quartiles. * and **: P<0.05 and <0.01 vs tamsulosin in a Wilcoxon signed rank test. Phenylephrine effects during placebo treatment are shown for comparison; they were not compared statistically to the data obtained during active treatment since they were determined at a different phenylephrine dose.