STEMI in a rural clinic: thrombolysis or transfer?
A 58-year-old man presents to a rural health clinic in Pahang with 2 hours of central chest pain, sweating, and nausea. ECG shows ST elevation in leads II, III, and aVF. Blood pressure is 140/90 mmHg, heart rate 90 bpm. He has a history of ischaemic stroke 8 months ago with mild residual left arm weakness. He is on aspirin and atorvastatin. His last meal was 3 hours ago. The nearest primary PCI centre is 2.5 hours away by ambulance; the weather is clear. The clinic stocks streptokinase and tenecteplase, and has a defibrillator. There is no on-site cardiologist; you can discuss by phone. The clinic has one monitored bed and a nurse trained in advanced life support. The patient is anxious and asks whether he can just go home to take his regular medicines.
1. Risk-stratify this patient for reperfusion and decide between thrombolysis and transfer for primary PCI.
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The patient has an inferior STEMI with symptom onset 2 hours ago. Primary PCI is the preferred reperfusion strategy if it can be delivered within 120 minutes of first medical contact. Here the nearest PCI centre is 2.5 hours away by ambulance, so expected delay exceeds 120 minutes. Thrombolysis is therefore a reasonable option if there are no absolute contraindications. However, the history of ischaemic stroke 8 months ago is a relative contraindication; the absolute contraindication is recent stroke within 3 months. The risk of intracranial haemorrhage is increased but not prohibitive. Inferior MI can be associated with right ventricular involvement and bradyarrhythmias; avoid nitrates if hypotension occurs. The decision should be shared with the patient: transfer offers better long-term outcomes but delays reperfusion; thrombolysis is faster but carries bleeding risk. Discuss by phone with the cardiologist and document the reasoning.
2. How do you discuss the risks and benefits with the patient?
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Use plain language and check understanding. Explain that his heart artery is blocked and needs opening quickly. Transfer for angioplasty gives the best chance of opening the artery and reducing long-term heart damage, but the 2.5-hour journey delays treatment and carries risk during transport. A clot-busting drug can be given immediately but has a small risk of causing bleeding in the brain, especially because of his previous stroke; it may also fail to open the artery, requiring rescue transfer. Discuss his anxiety about going home and correct any misconception that oral medicines are enough. Explore his values and fears, and support him in making an informed choice. Document the discussion and his decision.
3. What immediate adjunctive treatments and monitoring are required?
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Give aspirin 300 mg chewed, and a P2Y12 inhibitor (e.g., clopidogrel 300 mg) if thrombolysis is planned. Provide analgesia (morphine titrated) and oxygen only if saturations are below 94%. Insert an IV cannula, attach continuous cardiac monitoring, and have a defibrillator ready because inferior MI can cause bradycardia or heart block. Avoid intramuscular injections. If thrombolysis is given, monitor for reperfusion arrhythmias, bleeding, and hypotension. Keep the patient nil by mouth until the decision is clear. Arrange urgent transfer if thrombolysis fails or if cardiogenic shock develops. Document times of symptom onset, first medical contact, and drug administration.