Plasma renin predicts success of antihypertensive drug withdrawal

Gloria Y F Ho, M. Donald Blaufox, Sylvia Wassertheil-Smoller, Albert Oberman, Herbert Langford

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

This study examined the relationship of plasma renin activity (PRA) to the likelihood of maintaining blood pressure control after discontinuation of antihypertensive medication. Patients whose blood pressure was previously treated and controlled in the Hypertension Detection and Follow-up Program were enrolled in the Dietary Intervention Study of Hypertension. After stratification by obesity, patients were randomized to discontinue medication with no dietary intervention, sodium restriction, or weight reduction for the obese. Among 496 subjects in the Dietary Intervention Study of Hypertension, 75 were randomly selected for PRA measurement at 4 months after intervention, and all had their blood pressure under conkol at that time. Patients were followed up for 56 weeks after randomization. The endpoint was return to antihypertensive medication due to elevated diastolic blood pressure. Kaplan-Meier survival analysis showed that subjects with PRA ≤ 53.3 ng/100 mL/h, the median level, had a lower cumulative success rate for remaining off antihypertensive drug than those with PRA above the median (P = .046). In Cox regression analysis controlling for 24-h urinary sodium level, baseline diastolic blood pressure, age, sex, race, obesity, and dietary intervention group, a unit decrease in log PRA was associated with a 2.78-fold increase in risk of returning to drug (P = .006); this inverse relationship was independent of dietary intervention and change in diastolic blood pressure in the first 4 months before PRA was measured. The data indicate that patients with low PRA are less likely to maintain blood pressure control without drugs than patients with high PRA.

Original languageEnglish (US)
Pages (from-to)679-684
Number of pages6
JournalAmerican Journal of Hypertension
Volume7
Issue number8
StatePublished - Aug 1994

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Keywords

  • blood pressure control
  • drug therapy
  • hypertension
  • Renin

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Ho, G. Y. F., Blaufox, M. D., Wassertheil-Smoller, S., Oberman, A., & Langford, H. (1994). Plasma renin predicts success of antihypertensive drug withdrawal. American Journal of Hypertension, 7(8), 679-684.