Preliminary Report on the Safety and Efficacy of Staged versus Complete Revascularization in Patients with Multivessel Disease at the Time of Primary Percutaneous Coronary Intervention.

This study aims to determine the safety and efficacy of complete versus staged-percutaneous coronary intervention (PCI) of nonculprit lesions at the time of primary PCI in patients with multivessel disease. Recent trials had suggested that revascularization of nonculprit lesions at the time of primary PCI is associated with better outcomes, however; the optimum timing and overall safety of this approach is not well known. An observational prospective study was conducted, including 50 patients who presented with ST-segment elevation myocardial infarction and found to have at least an additional nonculprit significant (> 70%) type A or B lesion. According to the operator's discretion, patients either underwent complete revascularization of nonculprit significant lesions during primary PCI procedure or within 60 days of primary PCI (staged-PCI). Safety outcomes evaluated were contrast-induced nephropathy (CIN), the amount of contrast used, and fluoroscopy time. Efficacy outcome assessed was major adverse events (MACE) at 1 year. The fluoroscopy time and amount of contrast used were increased in complete revascularization group (35.3 ± 9.6 vs. 26.3 ± 6.7 minutes, p  < 0.001, and 219.5 ± 35.1 vs. 187.5 ± 45.5 mL, p  = 0.01, respectively); while incidence of CIN remained similar ( p  = 0.73). The incidence of MACE at 1 year was similar in both groups (23% in the complete revascularization group vs. 25% in the staged-PCI group, p  = 0.43). Complete revascularization and staged-PCI of nonculprit type A or B lesions at the time of primary PCI were associated with similar long-term outcomes and safety profile. Larger studies are needed to further validate these results.