The effect of droperidol (3.3 x 10(-6) M) on the functional capacities of the isolated heart has been studied. The drug inhibited myocardial contractility. The effect manifested directly after the introduction of droperidol into perfusate (prompt phase). Afterwards the progress of the drug inhibitory effect was slow (slow phase). It is assumed that the difficulties in the use of droperidol in the critical cardiosurgical patients are associated with the attenuation in the realization of the regulatory effects of the central nervous system.
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