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  • Title: Haemodynamic dose-response actions of cicloprolol in left ventricular dysfunction due to ischaemic heart disease.
    Author: Silke B, Verma SP, Sharma SK, Baig W, Jackson NC, Reynolds G, Frais MA, Taylor SH.
    Journal: Int J Cardiol; 1987 Nov; 17(2):127-36. PubMed ID: 2890589.
    Abstract:
    Cicloprolol is a cardioselective beta-1 partial agonist; its haemodynamic and radionuclide (nuclear stethoscope) effects were determined in 22 patients with impaired left ventricular function due to coronary artery disease. Following a 20 min stable control period, the effects of four doses of cicloprolol (0.025, 0.025, 0.05 and 0.1 mg/kg at 10 min intervals) were measured at rest 5-10 min after each intravenous injection. The effects of the cumulative 0.2 mg/kg dosage were assessed during supine bicycle exercise and compared with a control exercise period. At rest there were significant increases in systolic arterial without change in mean blood pressure. The heart rate and cardiac index were unchanged. There was a significant increase in left ventricular ejection fraction with a reduction in filling pressure and volume. Patients with resting heart rate below 75 beats/min and with ejection fraction greater than 35% showed the greatest improvement. During supine bicycle exercise, ejection fraction was increased compared to control (31 +/- 2 to 36 +/- 2; P less than 0.01), cardiac volume reduced and exercise tachycardia attenuated. These data suggest that cicloprolol may be of value where beta-blockade is considered in the presence of underlying left ventricular dysfunction due to ischaemic heart disease.
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