To the Editor: The paper by Curtis et al. (Oct. 27 issue)1 and the accompanying editorial by Kaplan2 are of considerable interest to any physician concerned with the basic mechanisms of hypertension and especially “essential hypertension.” The average blood pressure of the patients, when their native kidneys were in place and they were receiving at least four different antihypertensive medications, was reported as 168±9 mm Hg. In the appendix of the paper, the blood pressures after nephrectomy are presented. The average value of these blood pressures, calculated by me, was 117±6 mm Hg. Thus, there was a 51-mm Hg drop.
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