The authors have developed a method for forecasting the degree of the hypotensive effect of surgery for renovascular hypertension. Fifteen digital parameters were determined in 36 patients with unilateral lesions of the renal arteries by the following methods of preoperative examination: the establishment of the duration of hypertension, radio-isotope renography, determination of renin activity in the peripheral and renovascular (venous) blood, rheonephrography. The obtained set of characteristics was used for the prediction of postoperative arterial pressure values by means of one of the methods of mathematical statistics, the regression analysis in an "SM-4" electronic computer according to a specially created multivariate regression program in the "Fortran-4" language. The high accuracy of predicting the arterial pressure by this method was confirmed by clinical trials. Forecasting postoperative arterial pressure by this method allows us to substantiate with a high degree of fidelity the advisability of reconstructive surgery and opens up realistic prospects for improving its results.
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