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2737 Anaesthesia

A 23-year-old woman undergoes total thyroidectomy for carcinoma of the thyroid gland. On the second postoperative day, she begins to complain of a tingling sensation in her hands. She appears quite anxious and later complains of muscle cramps. Which of the following is the most appropriate initial management strategy?

A10 mL of 10% magnesium sulfate intravenously
BOral vitamin D
C100 mg oral Synthroid
DContinuous infusion of calcium gluconate
Anaesthesia
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2741 Anaesthesia

A 63-year-old man with multiple rib fractures and a pulmonary contusion requires prolonged intubation. He is unable to be weaned from the ventilator and is on a volume control mode. He has a tracheostomy and a percutaneous gastrotomy in place through which he is being fed. The surgeon orders a respiratory quotient (RQ), which is the ratio of the rate of carbon dioxide production over the rate of oxygen uptake. The RQ is 1. Based on this information, which of the following is the next step in his management?

ADecrease the inspired concentration of oxygen
BDecrease the rate on the ventilator
CIncrease the rate on the ventilator
DDecrease the carbohydrates in his enteral feeds
Anaesthesia
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