Angiotensin inhibition in renovascular disease: a population-based cohort study.

Abstract:

BACKGROUND:Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers effectively reduce blood pressure in patients with renovascular disease (RVD); yet, randomized cardiovascular prevention trials of these drugs typically exclude individuals with this condition. PATIENTS AND METHODS:We studied the association of renin-angiotensin system inhibition with prognosis in a population-based cohort comprising 3,570 patients with RVD in Ontario, Canada; slightly more than half (n = 1,857, 53%) were prescribed angiotensin inhibitors. The primary outcome was the composite of death, myocardial infarction, or stroke. Secondary outcomes included individual cardiovascular and renal events. RESULTS:Patients receiving angiotensin inhibitors had a significantly lower risk for the primary outcome during follow-up (10.0 vs 13.0 events per 100 patient-years at risk, multivariable adjusted hazard ratio [HR] 0.70, 95% CI 0.59-0.82). In addition, hospitalization for congestive heart failure (HR 0.69, 95% CI 0.53-0.90), chronic dialysis initiation (HR 0.62, 95% CI 0.42-0.92), and mortality (HR 0.56, 95% CI 0.47-0.68) was lower in treated patients. Conversely, patients receiving angiotensin inhibitors were significantly more likely to be hospitalized for acute renal failure during follow-up (HR 1.87, 95% CI 1.05-3.33; 1.2 vs 0.6 events per 100 patient-years at risk). CONCLUSIONS:These data emphasize the high vascular risk of RVD and suggest that angiotensin inhibitors may improve prognosis in this setting at the expense of acute renal toxicity. If the latter are selected in the management of RVD, renal function parameters should be assiduously followed.

journal_name

Am Heart J

journal_title

American heart journal

authors

Hackam DG,Duong-Hua ML,Mamdani M,Li P,Tobe SW,Spence JD,Garg AX

doi

10.1016/j.ahj.2008.05.013

subject

Has Abstract

pub_date

2008-09-01 00:00:00

pages

549-55

issue

3

eissn

0002-8703

issn

1097-6744

pii

S0002-8703(08)00385-2

journal_volume

156

pub_type

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