Systemic and regional hemodynamic effects of captopril and milrinone administered alone and concomitantly in patients with heart failure

T H LeJemtelB Chadwick


The effects of milrinone and captopril on ventricular performance, renal blood flow, and femoral vein oxygen content were compared in 11 patients with severe chronic heart failure. The increase in stroke volume index was greater with milrinone than with captopril (28 +/- 7 vs 24 +/- 7 ml/m2; p less than .05), while pulmonary capillary wedge pressures fell similarly (19 +/- 10 vs 21 +/- 7 mm Hg). Mean systemic arterial pressure decreased significantly from 84 +/- 10 to 73 +/- 11 mm Hg (p less than .05) with captopril but did not with milrinone. Neither drug changed heart rate significantly. Although milrinone produced a greater improvement in ventricular performance than captopril, renal blood flow increased similarly with both drugs from 289 +/- 78 to 417 +/- 111 ml/min (p less than .05) and from 278 +/- 77 to 441 +/- 115 ml/min (p less than .05), respectively. Femoral vein oxygen content was increased by milrinone from 7.9 +/- 2.6 to 9.8 +/- 3.0 ml/100 ml (p less than .05) and was not changed by captopril. In seven additional patients, intravenous milrinone, administered at the peak effect of captopril, further augmented stroke volume index from 24 +/- 6 to 32 +/- 6 ml/m2 (p less than .05) and tended to reduce pulmonary capill...Continue Reading


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