In-hospital and 3-year clinical outcomes following ad hoc versus staged percutaneous coronary interventions in chronic total occlusion — A real world practice

BackgroundAd hoc percutaneous coronary intervention (PCI) which was performed immediately after diagnostic catheterization has become the most common way of coronary intervention. However, limited data is available on in-hospital and long-term outcome comparing ad hoc and staged chronic total occlusion (CTO) PCI. The aim of our study was to figure the short-term and long-term outcomes after ad hoc or staged CTO PCI.MethodsThis retrospective analysis included 512 consecutive patients that underwent 561 CTO PCI procedures between January 2002 and December 2009. Patient basic demographics, lesion characteristics, interventional procedure, devices used and in-hospital outcomes were compared between ad hoc and staged CTO PCI groups. 3-Year clinical outcomes that included all-cause mortality, cardiac mortality, myocardial infarction (MI), the need for coronary artery bypass graft surgery (CABG), major adverse cardiac events (MACE) and target vessel revascularization (TVR) were compared. Time-to-event analyses were performed using Kaplan–Meier statistics.ResultsFour hundred fifty-one patients (80.4%) were enrolled in ad hoc CTO PCI group. Final successful revascularization was higher in ad hoc CTO PCI group compared with staged CTO PCI group (82.9 vs. 77.3%, p = 0.17) without statistical significance. There was no significant difference between ad hoc CTO PCI and staged CTO PCI groups in in-hospital outcomes such as all-cause mortality, cardiac death, myocardial infarction, urgent bypass surgery, urgent PCI or complications. Patients with ad hoc CTO PCI had lower rate of all-cause mortality (6.2% vs. 6.5%, p = 0.89), the need for CABG (1.9% vs. 2.1%, p = 0.89) but higher rate of cardiac mortality (1.7% vs. 0.0%, p = 0.21), MI (1.0% vs. 0.0%, p = 0.34), MACE (24.1% vs. 17.5%, p = 0.19) and TVR (17.8% vs. 10.0%, p = 0.069) without statistical significance in 3-year clinical outcomes.Conclusion3-Year clinical outcomes compared with ad hoc CTO PCI and staged CTO PCI had insignificant differences between: all-cause mortality, cardiac mortality, MI, the need for CABG, MACE and TVR.