Figure 1.

Changes in TBF and systemic pressure (MABP) caused by epinephrine. (A) Changes in TBF after continuous administration of epinephrine at a rate of 0.015 ml min⁻¹. ○, 30-min administration of 0.3 mg ml⁻¹ epinephrine (n=10); •, 60-min administration of 0.3 mg ml⁻¹ epinephrine (n=10); □, 120-min administration of 0.3 mg ml⁻¹ epinephrine (n=14); ▪, 120-min administration of 0.1 mg ml⁻¹ epinephrine (n=10); △, 0.9% NaCl solution (n=12). Continuous administration began at time 0. (B) Changes in systemic pressure caused by 120-min continuous administration of 0.3 mg ml⁻¹ epinephrine.