[The development of ischemic cardiac arrhythmias during naloxone blockade of the opiate receptors].

Acute experiments on cats have shown that the naloxone blocks of opiate receptors increased essentially the incidence of idioventricular arrhythmias in myocardial ischemia. These results may evidence of the endogenous opioid peptides involvement in the body response on the acute myocardial ischemia.