[Prevention of hemodynamic disorders during anesthesia in middle-aged and elderly patients with essential hypertension. Components of anesthesia. II].

Hemodynamic parameters were evaluated during various stages of anesthesia in two groups of patients aged 60-85 years with mild essential hypertension. In group 1, routine preoperative treatment with hypotensive drugs was carried out and in group 2 differentiated preoperative treatment with calcium antagonists was carried out with consideration for a hemodynamic type. Group I patients were operated on under traditional neuroleptic analgesia (NLA), group 2 under NLA with 40% lower drug doses than in group 1 and with addition of calcium antagonists. To patients with hypo- and eukinetic hemodynamics, nifedipine was injected (bolus injection) in a dose of 14.2 micrograms/kg before induction and then was infused in a dose of 6.0-14.2 micrograms/kg/min. Patients with hyperkinetic hemodynamics were injected verapamil in a dose of 70-140 micrograms/kg (bolus injection) and then the same dose every hour of the operation. Differentiated use of calcium antagonists during anesthesia helped transform the hyper- and hypokinetic types of hemodynamics into a more rational eukinetic type, which was associated with a decrease of MVO2. Calcium antagonists, exerting analgesic, automatic stabilizing, and antihypoxic effects, prevented the hyperdynamic reactions complicating NLA in 30% cases and precluded complications of concomitant ischemic diseases, which were observed in 40% of group 1 patients.