[The hemodynamic changes during preoperative acute normovolemic hemodilution (prospective, randomized and comparative research)].

Fifteen patients examined after preoperative acute normovolemic hemodilution (PANH) up to hematocrit value of 0.30 developed a significant increase in cardiac output (CO) and cardiac index (CI) and a decrease in total peripheral resistance (TPR), other hemodynamic parameters remained unchanged. In normal hemodynamics the patient's age is not a contraindication for PANH. Noninvasive monitoring of hemodynamic parameters, CO, CI and TPR in particular, during surgery employing PANH is obligatory for the early diagnosis and correction of impaired circulation.