Yu Zhou1, Shengda Chen2,3, Lan Huang1, David Hildick-Smith4, Miroslaw Ferenc5, Richard J Jabbour6, Lorenzo Azzalini6, Antonio Colombo6, Alaide Chieffo6, Xiaohui Zhao1. 1. Institution of Cardiovascular Research, Xinqiao Hospital, Third Military Medical University, Chongqing, China. 2. State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, China. 3. IBiTech, bioMMeda, Department of Electronics and Information Systems, iMinds Medical IT Department, Ghent University, De Pintelaan, Ghent, Belgium. 4. Sussex Cardiac Centre, Brighton and Sussex University Hospitals, Brighton, United Kingdom. 5. The Division of Cardiology and Angiology II, University Heart Center Freiburg - Bad Krozingen, Suedring 15, Bad Krozingen, Germany. 6. Cardiology Department, San Raffaele Hospital, Milan, Italy.
Abstract
BACKGROUND: Bifurcation percutaneous coronary intervention (PCI) is a challenging procedure, but there are currently inadequate data about definite stent thrombosis (ST) rates of single-stent versus double-stent strategies (SS and DS, respectively). METHODS AND RESULTS: Randomized clinical trials (RCTs) comparing SS and DS strategies were searched through PubMed, Embase, and the Cochrane Central Register of Controlled Trials. Fourteen RCTs involving 3,107 patients were analyzed. Owing to the high crossover rate (16.49%), both intention-to-treat (ITT) and as-treated (AT) analyses were performed. In the ITT population, there was a significantly lower rate of early definite ST in the SS group (0.26%; DS group 1.14%; P = 0.021). Similarly, in the AT population, there was a significantly lower rate of early definite ST in the SS group (0.23%, DS group 1.07%; P = 0.042). True bifurcation subgroup analysis also showed a significantly lower early definite ST in the SS group (OR = 0.36, 95% CI = 0.15-0.86, P = 0.042) in the ITT population. There was no significant difference of overall, acute, subacute, and late definite ST between the 2 groups. CONCLUSIONS: Early definite ST is reduced when a SS strategy is used in bifurcation lesions.
BACKGROUND: Bifurcation percutaneous coronary intervention (PCI) is a challenging procedure, but there are currently inadequate data about definite stent thrombosis (ST) rates of single-stent versus double-stent strategies (SS and DS, respectively). METHODS AND RESULTS: Randomized clinical trials (RCTs) comparing SS and DS strategies were searched through PubMed, Embase, and the Cochrane Central Register of Controlled Trials. Fourteen RCTs involving 3,107 patients were analyzed. Owing to the high crossover rate (16.49%), both intention-to-treat (ITT) and as-treated (AT) analyses were performed. In the ITT population, there was a significantly lower rate of early definite ST in the SS group (0.26%; DS group 1.14%; P = 0.021). Similarly, in the AT population, there was a significantly lower rate of early definite ST in the SS group (0.23%, DS group 1.07%; P = 0.042). True bifurcation subgroup analysis also showed a significantly lower early definite ST in the SS group (OR = 0.36, 95% CI = 0.15-0.86, P = 0.042) in the ITT population. There was no significant difference of overall, acute, subacute, and late definite ST between the 2 groups. CONCLUSIONS: Early definite ST is reduced when a SS strategy is used in bifurcation lesions.