Practice Test 12

After a motor vehicle collision, a 30-year-old woman arrives hypotensive (BP 78/44) and tachycardic (HR 132); FAST is positive for free fluid; Hgb 9.2 g/dL, lactate 5.1 mmol/L. Which intervention is most critical at this stage of care?​

A 75-year-old man with a history of stable angina and a prior coronary stent is on postoperative day 3 following a partial nephrectomy for a renal mass. He reports mild epigastric discomfort and new-onset shortness of breath. His blood pressure is 130/80 mmHg and heart rate is 95/min. An ECG shows new T-wave inversions in leads I, aVL, V5, and V6. His initial high-sensitivity troponin is 0.9 ng/mL (reference <0.04 ng/mL).