Immunology USMLE Step 1 Practice Question
A 65-year-old male with hypertension (BP 142/88 mmHg, HR 98/min) undergoes coronary artery bypass surgery grafting the left internal mammary artery to the left main coronary artery. Intraoperative findings show significant left main coronary stenosis on angiography. Postoperatively, he remains afebrile (37.2°C) with adequate oxygenation (SpO2 98% on room air) and no signs of acute rejection. He continues his home lisinopril regimen. Which of the following describes the type of graft performed?
Answer choices
- AAn autograftCorrect answer
- BAn isograft
- CA homograft
- DAn allograft
- EA xenograft
- FA synthetic graft made of polytetrafluoroethylene (PTFE)
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