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Increased Long-Term Cardiovascular Risk After Total Hip Arthroplasty: A Nationwide Cohort Study.

Journal article
Authors Max Gordon
Agata Rysinska
Anne Garland
Ola Rolfson
Sara Aspberg
Thomas Eisler
Göran Garellick
André Stark
Nils P Hailer
Olof Sköldenberg
Published in Medicine
Volume 95
Issue 6
Pages e2662
ISSN 1536-5964
Publication year 2016
Published at Institute of Clinical Sciences, Department of Orthopaedics
Pages e2662
Language en
Links dx.doi.org/10.1097/MD.0000000000002...
Subject categories Orthopedics

Abstract

Total hip arthroplasty is a common and important treatment for osteoarthritis patients. Long-term cardiovascular effects elicited by osteoarthritis or the implant itself remain unknown. The purpose of the present study was to determine if there is an increased risk of late cardiovascular mortality and morbidity after total hip arthroplasty surgery.A nationwide matched cohort study with data on 91,527 osteoarthritis patients operated on, obtained from the Swedish Hip Arthroplasty Register. A control cohort (n = 270,688) from the general Swedish population was matched 1:3 to each case by sex, age, and residence. Mean follow-up time was 10 years (range, 7-21).The exposure was presence of a hip replacement for more than 5 years. The primary outcome was cardiovascular mortality after 5 years. Secondary outcomes were total mortality and re-admissions due to cardiovascular events.During the first 5 to 9 years, the arthroplasty cohort had a lower cardiovascular mortality risk compared with the control cohort. However, the risk in the arthroplasty cohort increased over time and was higher than in controls after 8.8 years (95% confidence interval [CI] 7.0-10.5). Between 9 and 13 years postoperatively, the hazard ratio was 1.11 (95% CI 1.05-1.17). Arthroplasty patients were also more frequently admitted to hospital for cardiovascular reasons compared with controls, with a rate ratio of 1.08 (95% CI 1.06-1.11).Patients with surgically treated osteoarthritis of the hip have an increased risk of cardiovascular morbidity and mortality many years after the operation when compared with controls.

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