4 50 歲男性病人,三天前因嚴重頭痛到院,經電腦斷層與血管攝影檢查後診斷出大腦動脈瘤(cerebral arterial aneurysm),現進行手術。對麻醉的誘導和維持,下列敘述何者錯誤?
(A)需動脈導管(arterial catheter)監測血壓
(B)麻醉誘導須避免突然血壓上升(acute hypertension)
(C)手術中選擇性低血壓(induced hypotension)常使用高濃度 isoflurane 合併 nitroprusside
(D)手術中過度換氣,造成動脈二氧化碳氣體壓力(PaCO2)的下降,可增加腦部血流量(cerebral blood flow)
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統計: A(3), B(1), C(5), D(32), E(0) #1051283
統計: A(3), B(1), C(5), D(32), E(0) #1051283
詳解 (共 1 筆)
#6267417
Hyperventilation causes cerebral vasoconstriction, which reduces cerebral blood flow and volume to decrease the oxygen supply in both normal and injured areas. Hyperventilation decreases the intracranial pressure and relaxes the brain.
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