Vascular Surgery · NEET PG Preparation Surgery
A 60-year-old male with chronic renal failure on hemodialysis presents for evaluation of vascular access. He is planned for the creation of a radioce…
Practice question from Vascular Surgery (NEET PG Preparation Surgery), with the correct answer and a step-by-step solution.
medium · MCQ · Q-19677D
A 60-year-old male with chronic renal failure on hemodialysis presents for evaluation of vascular access. He is planned for the creation of a radiocephalic arteriovenous fistula (AVF) in his non-dominant left arm. Which of the following is considered the most critical preoperative assessment?
- A.Allen test to evaluate the palmar arch collateral circulation
- B.Duplex ultrasound mapping of the radial artery diameter and cephalic vein caliberCorrect answer
- C.Magnetic resonance angiography of the upper extremity arterial tree
- D.Coagulation profile to rule out hypercoagulable states
Solution
Preoperative vascular mapping using duplex ultrasonography is essential to assess vessel quality, specifically ensuring adequate arterial diameter (usually mm) and vein caliber (usually to 3 mm) to maximize primary patency rates of the AVF.
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