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Background: There are continuing bed constraints in percutaneous coronary intervention centres (PCI) so efficient patient triage from referral hospitals is pivotal. To evaluate a strategy of PCI centre (PCIC) bed-sparing we examined return of patients to referral hospitals screened by the RETRIEVE (REverse TRIage EVEnts) criteria and validated its use as a tool for screening suitability for same day transfer of non-ST-elevation acute coronary syndrome (NSTEACS) patients post PCI to their referring non-PCI centre (NPCIC)., Methods: From May 2008 to May 2011, 433 NSTEACS patients were prospectively screened for suitability for same day transfer back to the referring hospital at the completion of PCI. Of these patients, 212 were excluded from same day transfer using the RETRIEVE criteria and 221 patients met the RETRIEVE criteria and were transferred back to their NPCIC., Results: Over the study period, 218 patients (98.6%) had no major adverse events. The primary endpoint (death, arrhythmia, myocardial infarction, major bleeding event, cerebrovascular accident, major vascular site complication, or requirement for return to the PCIC) was seen in only three transferred patients (1.4%)., Conclusions: The RETRIEVE criteria can be used successfully to identify NSTEACS patients suitable for transfer back to NPCIC following PCI. Same day transfer to a NPCIC using the RETRIEVE criteria was associated with very low rates of major complications or repeat transfer and appears to be as safe as routine overnight observation in a PCIC., (Copyright © 2017 Australian and New Zealand Society of Cardiac and Thoracic Surgeons (ANZSCTS) and the Cardiac Society of Australia and New Zealand (CSANZ). All rights reserved.)