ISSN:
1436-2813
Keywords:
beating-heart surgery
;
ultra-short-acting β-blocker
;
aortic cross-clamp
;
cardiopulmonary bypass
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract The administration of an ultra-short-acting β-adrenergic antagonist, esmolol, has been introduced as a novel method for beating-heart surgery. In the present study, a new ultra-short-acting β-blocker, ONO-1101, was administered during cardiopulmonary bypass (CPB) to investigate its effects on cardiac function and hemodynamics. Nine adult mongrel dogs underwent 60 min of CPB during which they were given either ONO-1101 (ONO group;n=4) or saline (control group;n=5). In the ONO group, the hearts became flaccid enough for surgery to be performed without cardiac standstill within 10min after the commencement of ONO-1101 with significant decreases in the heart rate, the preload recruitable stroke work (PRSW), and the slope of the endsystolic left ventricular pressure-volume relationship (Emax). The mean arterial pressure and systemic vascular resistance also decreased, but were maintained above 50 mmHg during CPB without catecholamine. These indices increased to the control group level 20 min after the discontinuation of ONO-1101. The serum concentration of ONO-1101 decreased from the maximum level of 121±15 μg/ml soon after infusion to 11 ±5 μg/ml within 30 min after discontinuation. These data suggest that ONO-1101 may be useful to enable beating-heart surgery to be performed without aortic cross-clamp as an ultra-short-acting β-adrenergic blocker.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02483015
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