(HealthDay News) − A meta-analysis of more than 7,000 patients suggests that there is no benefit to initial stent implantation over medical therapy in the treatment of patients with stable coronary artery disease (CAD).
Kathleen Stergiopoulos, MD, PhD, and David L. Brown, MD, of the Stony Brook University Medical Center in New York, conducted a meta-analysis of eight prospective randomized clinical trials identified from the literature and involving 7,229 patients who underwent either initial coronary stent implantation or medical therapy for treatment of stable CAD. The effect of each intervention on the mortality rate and incidence of nonfatal myocardial infarction, unplanned revascularization, and persistent angina was investigated.
The researchers found that the respective event rates for death after an average 4.3-year follow-up period were 8.9% with stent implantation and 9.1% with medical therapy (odds ratio [OR], 0.98; 95% confidence interval [CI], 0.84 to 1.16). The incidence of nonfatal myocardial infarction was 8.9 and 8.1% for stent implantation and medical therapy, respectively (OR 1.12; 95% CI, 0.93 to 1.34). Rates of unplanned revascularization (21 and 34%, respectively; OR, 0.78; 95% CI, 0.57 to 1.06) and persistent angina (29 and 33%, respectively; OR, 0.80; 95% CI, 0.60 to 1.05) were also similar between the two intervention groups.
“Initial stent implantation for stable CAD shows no evidence of benefit compared with initial medical therapy for prevention of death, nonfatal myocardial infarction, unplanned revascularization, or angina,” the authors write.