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[Evaluation of the effectiveness of hypotensive therapy in hypertensive crises in older patients at the pre-hospital stage].

Volumetric blood flow of the head and chest was assessed by multichannel impedance plethysmography, and central hemodynamics, by tetrapolar integral rheography, in 110 patients with essential hypertension. The measurements were made during crises and 60 minutes after the onset of hypotensive treatment. It is demonstrated that the assessment of the efficiency of treatment for hypertensive crises should be based on studies of regional circulation, cerebral and central thoracic flow, in particular, as well as the BP fall in patients of advanced age.