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Optimal Treatment Strategies in Patients with Chronic Kidney Disease and Coronary Artery Disease
Authors:Alexander Volodarskiy  Sunil Kumar  Shyam Amin  Sripal Bangalore
Affiliation:1. Hofstra Northwell School of Medicine, Manhasset, NY;2. Cardiac Clinic of Kissimmee, Fla;3. New York University School of Medicine
Abstract:

Background

Chronic kidney disease is an independent risk factor for coronary artery disease and is associated with an increase in adverse outcomes. However, the optimal treatment strategies for patients with chronic kidney disease and coronary artery disease are yet to be defined.

Methods

MEDLINE, EMBASE, and CENTRAL were searched for studies including at least 100 patients with chronic kidney disease (defined as estimated glomerular filtration rate ≤60 mL/min/1.73 m2 or on dialysis) and coronary artery disease treated with medical therapy, percutaneous coronary intervention, or coronary artery bypass surgery and followed for at least 1 month and reporting outcomes. The outcome evaluated was all-cause mortality. Meta-analysis was performed to evaluate the outcomes with revascularization (percutaneous coronary intervention or coronary artery bypass surgery) when compared with medical therapy alone. In addition, outcomes with percutaneous coronary intervention vs coronary artery bypass surgery were evaluated.

Results

The search yielded 38 nonrandomized studies that enrolled 85,731 patients. Revascularization (percutaneous coronary intervention or coronary artery bypass surgery) was associated with lower long-term mortality (mean 4.0 years) when compared with medical therapy alone (relative risk [RR] 0.73; 95% confidence interval [CI], 0.62-0.87), driven by lower mortality with percutaneous coronary intervention vs medical therapy and coronary artery bypass surgery vs medical therapy. Coronary artery bypass surgery was associated with a higher upfront risk of death (RR 1.81; 95% CI, 1.47-2.24) but a lower long-term risk of death (RR 0.94; 95% CI, 0.89-0.98) when compared with percutaneous coronary intervention.

Conclusions

In chronic kidney disease patients with coronary artery disease, the current data from nonrandomized studies indicate lower mortality with revascularization, via either coronary artery bypass surgery or percutaneous coronary intervention, when compared with medical therapy. These associations should be tested in future randomized trials.
Keywords:Chronic kidney disease   Coronary artery bypass graft surgery   Coronary artery disease   Medical therapy   Percutaneous coronary intervention   Revascularization   Surgery
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