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1467, either, cat. 56 DAY CASE PERCUTANEOUS CORONARY INTERVENTION IN SELECTED PATIENTS – A PILOT STUDY IN NORTHERN IRELAND E.C. Hodkinson1,2, J.C. Murphy1, H. Douglas1, I.B.A. Menown2, A.J. McClelland2, M.S. Spence1, C.G. Hanratty1, S.J. Walsh1,2 1 Cardiology Department, Belfast Health and Social Care Trust, Belfast, 2Cardiology Department, Craigavon Area Hospital, Craigavon, Northern Ireland Introduction: Further to the development of intracoronary stents post-procedural complications after percutaneous coronary intervention (PCI) are infrequent. Acute complications occur almost exclusively within 6hrs. Therefore, daycase PCI should be safe and feasible. Methods: Daycase PCI has been performed in N.Ireland since November 2008. Patients are discharged after 6 hours if the PCI is successful (TIMI 3 flow,<20% residual stenosis of target lesion) and they meet same day discharge criteria. Exclusions include: unstable patients (ischaemia/loss of a side branch >1mm,LVF or instability during PCI), vascular complication or sub-optimal technical result. Importantly, convalescent acute coronary syndrome (ACS) patients are not excluded from daycase PCI. Results: The first 460 cases are presented: 342 (74%) were male, mean age 64(range 32-89yrs). LV function was severely impaired in 7(2%). 44% of lesions treated were high risk (AHA/ACC classification). A total of 648 stents were deployed, 70% drug eluting. The indication was ACS in over a third (151, 33%). Of these, 26% were convalescent STEMI patients. The remaining 309 had stable angina. Thirty-day follow-up is available on 358 patients. There were 4 MACE events. One patient died day 5 from a necropsy confirmed, and one day 23 from a presumed, stent thrombosis. One died day 4 from subarachnoid haemorrhage. One patient had an MI not related to the culprit vessel PCI. Two patients had arrhythmia (VF) within 6 hrs, all were successfully resuscitated. There were no events between 6-24 hours. Conclusion: Daycase PCI in selected cases is safe, feasible and offers substantial cost savings. In addition to elective PCI, patients with stabilised ACS can be safely discharged 6 hours post PCI.