ONLY TOTAL OCCLUSION TYPE IN-STENT RESTENOSIS IS ASSOCIATED WITH POOR FUNCTIONAL AND CLINICAL OUTCOMES AFTER SUCCESSFUL PRIMARY PERCUTANEOUS CORONARY INTERVENTION FOR ST ELEVATION MYOCARDIAL INFARCTION

Methods: We investigated 339 STEMI patients who had undergone pPCI with BMS followed by rest (acute phase=within 2 weeks) /exercise stress (chronic phase) 99m-Tc-Tetrofosmin scintigraphy (TcTF) and follow-up coronary angiography (CAG). According to the result of follow-up CAG, they were divided into three groups (A: no ISR, n=228; B: ISR without occlusion, n=86; C: ISR with occlusion, n=25). Perfusion defect score (DS), left ventricular ejection fraction (LVEF) and myocardial ischemia were evaluated by TcTF. Re-hospitalization due to congestive heart failure and cardiac death were investigated as clinical events.