[Effect of molsidomine on the regional distribution of cardiac output in the anaesthetized dog (author's transl)].

In anaesthetized dogs blood pressures were measured in the following parts of the circulation: A. femoralis, aorta, left ventricle and A. pulmonalis. By means of particle distribution technique blood flow was measured in 25 different organs. By additional determination of arterio-venous O2 difference (AVDO2) between heart and brain oxygen consumption could be calculated. All data were measured before, 15, 30, 45 and 60 min after injection of 0.05 or 0.1 mg/kg, respectively, N-carboxy-3-morpholino-sydnonimine ethylester (molsidomine, Corvaton) i.v. 1. Molsidomine reduces blood pressures in all parts of the circulation measured. The duration of effects exceeds the experimental period. 2. The compound is no coronary vasodilator in the dose range selected, no dilation of cerebral occurs. Blood flow in kidneys remains constant. Blood flow values of all other organs do not give any indication of an essential peripheral dilatory effect of the drug. 3. Oxygen consumption of left ventricle is significiantly reduced by 25% with molsidomine (0.05 mg/kg i.v.). Oxygen consumption of brain remains constant. 4. All data are in accordance with the hypothesis that molsidomine exerts its effect predominantly by acting on capacitance vessels (venous pooling) of the circulation.