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  • Title: The acute haemodynamic effects of quinapril, a new non-sulfhydryl angiotensin converting enzyme inhibitor, in patients with severe congestive cardiac failure.
    Author: Holt P, Najm J, Sowton E.
    Journal: Eur J Clin Pharmacol; 1986; 31(1):9-14. PubMed ID: 3023100.
    Abstract:
    This study investigates the acute haemodynamic effects of Quinapril (CI-906) a new non-sulphydryl angiotensin converting enzyme inhibitor in 15 patients with refractory congestive cardiac failure. There were 14 males and 1 female mean age 59.5 years. After administration of Quinapril there was a significant reduction in mean arterial pressure (MAP) from 93.1 to 79 mmHg, systemic vascular resistance (SVR) from 1887 to 1349 dyn s cm-5 and PCW from 27.3 to 15.3 mmHg. This was accompanied by an increase in CO from 3.7 to 4.71/min, cardiac index (CI) from 1.97 to 2.51/min/m2 and Stroke volume index from 21.1 to 28.7 ml/m2. There was no significant change in heart rate (HR), right atrial pressure (RAP), or pulmonary vascular resistance. The peak effect on pulmonary capillary wedge pressure (PCW) and cardiac output (CO) occurred at 75-120 min after Quinapril administration. The maximum effect on mean arterial pressure (MAP) occurred slightly later at 120-150 min. SVR and CI exhibited 2 periods of peak effects, at 90 and 180 min. This time course is very similar to that observed in studies on the acute effects of Captopril. The significant improvement in haemodynamic measurements acutely, following administration of Quinapril 5 mg orally, suggests that this drug is worthy of further study in the management of patients with refractory congestive cardiac failure, in particular its long term effects.
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