A 48-year-old man with a 10-year history of hypertension and hyperlipidemia presents to the emergency department with acute substernal chest pain that began 90 minutes ago. The pain is severe (9/10), radiating to his left arm and jaw, and is associated with diaphoresis. His wife reports he has never had similar symptoms. Vital signs: BP 168/98 mmHg, HR 108 bpm, RR 20, SpO2 96% on room air. On examination, he appears anxious and diaphoretic. An EKG obtained within 10 minutes of arrival demonstrates 3-mm ST elevation in leads V2, V3, and V4 with reciprocal ST depression in leads II, III, and aVF. Serum troponin I is 2.9 ng/mL (normal <0.04). He receives aspirin 325 mg and unfractionated heparin 80 U/kg bolus. Emergent cardiac catheterization reveals a completely occluded left anterior descending coronary artery with TIMI 0 flow. Which of the following interventions has been demonstrated to provide the greatest reduction in short-term and long-term mortality in this clinical scenario?
- A)Primary percutaneous coronary intervention with stent placementGABARITO
- B)Immediate high-dose intravenous nitroglycerin infusion
- C)Immediate high-intensity statin loading followed by beta-blocker initiation
- D)Intra-aortic balloon pump placement prior to coronary angiography
- E)Immediate initiation of dual antiplatelet therapy with clopidogrel and observation for 24 hours
Explicação
Primary percutaneous coronary intervention (PCI) with stent placement is the gold standard treatment for STEMI and has been proven in multiple randomized controlled trials (including the GUSTO-IIb and PAMI trials) to reduce mortality, reinfarction rates, and s... Ver explicação completa e trilha adaptativa →