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117118 Anatomy

The middle meningeal artery:

AEnters the skull through the foramen ovale
BSupplies the superolateral surface of the ipsilateral cerebral hemisphere
CRuns a subdural course within the cranial cavity
DGives an interior branch which runs deep to the pterion
Anatomy
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117126 Surgery

A 50-year-old man with small-bowel fistula has been receiving TPN for the previous 3 weeks through a single-lumen central venous catheter. He is scheduled for exploratory laparotomy and closure of fistula. On the morning of the day of surgery, TPN is discontinued and intra-venous infusion with balanced salt solution (Ringer’s lactate) is staed. An hour later, the patient is found to be anxious, sweating, and tachycardic. What is the most likely cause?

AAnxiety
BHypoglycemia
CHypovolemia
DUnexplained hemorrhage
Surgery
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