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J Invasive Cardiol. 2017 Sep 15. pii: JIC2017915-3. [Epub ahead of print]

Drug-Eluting vs Bare-Metal Stents in Patients With Chronic Kidney Disease and Coronary Artery Disease: Insights From a Systematic Review and Meta-Analysis.

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1
Cardiovascular Outcomes Group, Cardiovascular Clinical Research Center, Associate Professor of Medicine, New York University School of Medicine, The Leon H. Charney Division of Cardiology, New York, NY 10016 USA. sripal.bangalore@gmail.com.

Abstract

BACKGROUND:

Most drug-eluting stent (DES) trials have excluded patients with chronic kidney disease (CKD). The efficacy of DES implantation in patients with CKD is therefore not known.

OBJECTIVES:

To evaluate the outcomes with DES vs bare-metal stent (BMS) implantation in patients with CKD.

METHODS AND RESULTS:

MEDLINE, EMBASE, and CENTRAL were searched for studies including at least 100 patients with CKD (estimated glomerular filtration rate ≤60 mL/min/1.73 m² or on dialysis) treated with DES or BMS and followed for at least 1 month and reporting outcomes of all-cause mortality, cardiovascular (CV) mortality, myocardial infarction (MI), target-vessel revascularization (TVR), and stent thrombosis (ST). Thirty-one studies (5 randomized) with 91,817 participants (49,081 DES and 42,736 BMS) fulfilled the inclusion criteria. DES was associated with lower all-cause mortality (relative risk [RR], 0.77; 95% confidence interval [CI], 0.71-0.84), CV mortality (RR, 0.51; 95% CI, 0.38-0.70), MI (RR, 0.90; 95% CI, 0.86-0.95), TVR (RR, 0.61; 95% CI, 0.47-0.80), and numerically lower ST (RR, 0.75; 95% CI, 0.55-1.01) when compared with BMS. Analysis by study type (RCTs vs non-RCTs) showed similar results for most outcomes (Pinteraction>.05) except all-cause mortality, where there was no difference between DES vs BMS in RCTs (Pinteraction=.04). The effects were greater with 2nd-generation DES vs BMS (for example, ST: RR, 0.38; 95% CI, 0.20-0.72).

CONCLUSIONS:

In patients with CKD, the available evidence, largely from observational studies, suggests significantly fewer events with DES vs BMS with even a lower ST rate with 2nd-generation DES. These findings should be tested in large, randomized trials.

PMID:
28915510
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