This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute coronary syndrome, Subject name: Medicine
[{'content': 'Rescue P.C.I is done for which of the following? \nSelect and explain. \nA. Persistent chest pain with ST elevation > 60 min after thrombolysis, B. Persistent chest pain with ST elevation > 30 min after thrombolysis, C. Persistent Chest pain with ST elevation >90 min after thrombolysis, D. Pain with ST elevation for >120minutes after thrombolysis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Option C = Rescue P.C.I. After thrombolysis ST Elevation begin to reduce If ST Elevation persisting in spite of thrombolysis. So it's failure of thrombolysis | within 90 minutes Rescue PCI Types of PCI Primary PCI done for STEMI (Door to device time < 90 minutes). Delayed PCI done for Unstable Angina NSTEMI Rescue PCI Failure of thrombolysis (within 90 minutes).", 'role': 'assistant'}]