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Comparative Study
. 2012 Apr 3;125(13):1635-42.
doi: 10.1161/CIRCULATIONAHA.111.068064. Epub 2012 Feb 29.

Incidence and prognosis of resistant hypertension in hypertensive patients

Stacie L Daugherty  1 , J David Powers, David J Magid, Heather M Tavel, Frederick A Masoudi, Karen L Margolis, Patrick J O'Connor, Joe V Selby, P Michael Ho
Affiliations
Comparative Study

Incidence and prognosis of resistant hypertension in hypertensive patients

Stacie L Daugherty et al. Circulation. .

Abstract

Background: Despite a recent American Heart Association (AHA) consensus statement emphasizing the importance of resistant hypertension, the incidence and prognosis of this condition are largely unknown.

Methods and results: This retrospective cohort study in 2 integrated health plans included patients with incident hypertension in whom treatment was begun between 2002 and 2006. Patients were followed up for the development of resistant hypertension based on AHA criteria of uncontrolled blood pressure despite use of ≥3 antihypertensive medications, with data collected on prescription filling information and blood pressure measurement. We determined incident cardiovascular events (death or incident myocardial infarction, heart failure, stroke, or chronic kidney disease) in patients with and without resistant hypertension with adjustment for patient and clinical characteristics. Among 205 750 patients with incident hypertension, 1.9% developed resistant hypertension within a median of 1.5 years from initial treatment (0.7 cases per 100 person-years of follow-up). These patients were more often men, were older, and had higher rates of diabetes mellitus than nonresistant patients. Over 3.8 years of median follow-up, cardiovascular event rates were significantly higher in those with resistant hypertension (unadjusted 18.0% versus 13.5%, P<0.001). After adjustment for patient and clinical characteristics, resistant hypertension was associated with a higher risk of cardiovascular events (hazard ratio, 1.47; 95% confidence interval, 1.33-1.62).

Conclusions: Among patients with incident hypertension in whom treatment was begun, 1 in 50 patients developed resistant hypertension. Patients with resistant hypertension had an increased risk of cardiovascular events, which supports the need for greater efforts toward improving hypertension outcomes in this population.

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Conflict of interest statement

DISCLOSURES

All authors report no conflicts on interest in regards to this manuscript.

Figures

Figure 1
Figure 1
Flow chart of study population.
Figure 2
Figure 2
Determination of resistance status among those on 3 or more medications for at least one month. a. Blood Pressure Controlled at Baseline b. Blood Pressure Uncontrolled at Baseline
Figure 2
Figure 2
Determination of resistance status among those on 3 or more medications for at least one month. a. Blood Pressure Controlled at Baseline b. Blood Pressure Uncontrolled at Baseline
See this image and copyright information in PMC

Comment in

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