A 65-year-old man has a history of alcohol abuse. Which of the following preoperative serum concentrations would provide the best assessment of synthetic hepatic function?
During anesthesia with nitrous oxide 65% in oxygen, fentanyl, and pancuronium, nitroprusside is administered to decrease arterial pressure to 85/50 mmHg. A decrease in PaO2 from 120 to 65 mmHg is most likely caused by
A 30-kg patient with asthma is receiving general anesthesia and being mechanically ventilated with a measured tidal volume of 300 mL. Increasing the fresh gas flow from 3 L/min to 9 L/min without changing the ventilatory rate or I:E ratio will result in
Which of the following statements best describes "screening" when blood is ordered for type and screen?
(A) Red blood cells are mixed with serum containing known antigens
(B) Red blood cells are mixed with serum from the pool of potential donors
(C) Red blood cells are mixed with red blood cells from the pool of potential donors
(D) Serum is mixed with red blood cells that contain known antigens
(E) Serum is mixed with red blood cells from the pool of potential donors
D
A patient is placed in the prone jackknife position for lumbar subarachnoid injection of tetracaine 10 mg in 10 ml of preservative-free sterile water. Which of the following results is most likely?