Key result
AVR can cause pseudohypotension from left subclavian artery occlusion, marked by inter-arm pressure differences.
This case highlights the importance of checking inter-arm pressure differences during cardiac surgery to identify pseudohypotension caused by arterial stenosis.
A 67‐year‐old man developed acute pulse pressure narrowing after aortic valve replacement. Right radial artery cannulation restored normal pressure, and left subclavian artery occlusion was found, diagnosing pseudohypotension from arterial stenosis. This case emphasizes checking inter‐arm pressure differences in cardiac surgery and highlights a key diagnostic algorithm.
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Zhou et al. (2026) studied this question. Aortic valve replacement can cause pseudohypotension due to left subclavian artery occlusion, highlighted by pulse pressure narrowing and inter-arm pressure differences.
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