Does the hyperfiltration of minoxidil result in increased proteinuria and loss of renoprotection conferred by angiotensin inhibition?
The objective of the present study was to retrospectively examine whether the addition of minoxidil to patients who were already treated with maximum doses of angiotensin-converting enzyme inhibitors and angiotensin receptor blockers but who had not achieved target blood pressures, has any detrimental effect on proteinuria or renal function or whether its effect on blood pressure prove salutary. The clinical records of the patients seen at the Hypertension, Nephrology, Dialysis and Transplantation Clinic from June 1982 through May 2005 were reviewed to identify 54 patients (78% men, 82% African-American) who had taken minoxidil (with and without angiotensin inhibition and blockade) and who had documented 24-hour urines for creatinine clearance and quantification of proteinuria before the initiation of minoxidil and after the blood pressure had stabilized on its final dose. The study was done at the Hypertension, Nephrology, Dialysis and Transplantation Clinic, the regional referral cen
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