TABLE 1

Hemodynamic Parameters at Baseline, After Inflation of Hydraulic Occluder (Ischemia), and During Dipyridamole Infusion

Study phaseSystolic pressure (mm Hg)Diastolic pressure (mm Hg)Heart rate (beats/min)End diastolic LV pressure (mm Hg)LV dP/dt max (mm Hg/s)Segment shortening (%)Mean coronary blood flow (mL/min)
Baseline113 ± 1676 ± 1495 ± 218 ± 31,631 ± 36117.1 ± 3.831 ± 13
Ischemia110 ± 1477 ± 13110 ± 2310 ± 51,384 ± 3888.5 ± 4.1*18 ± 9*
Ischemia + dipyridamole81 ± 11*†45 ± 8*†114 ± 218 ± 31,361 ± 23911.2 ± 5.2*30 ± 7†

  • ↵* P < 0.05, significantly different from baseline.

  • ↵† P < 0.05, significantly different from ischemia.

  • dP/dt max = maximum dP/dt.