A 6-year-old boy with spina bifida and a chronic indwelling urinary catheter has severe hypotension and hypoxemia during augmentation cystoplasty. Which of the following is the most likely cause?
(A) Autonomic neuropathy
(B) Disseminated intravascular coagulation
(C) Latex allergy
(D) Urinary sepsis
(E) Venous air embolism
C
A 57-year-old man has back pain, a heart rate of 90 bpm, decreased pulse in the left arm, and blood pressure of 200/110 mmHg. During infusion of nitroprusside, heart rate increases to 115 bpm and blood pressure decreases to 140/80 mmHg. The most appropriate management at this time is administration of
A 26-year-old woman has persistent uterine bleeding following a normal spontaneous delivery without anesthesia. The uterus is firm on manual examination. Which of the following anesthetics is most appropriate for manual extraction of the placenta?
(A) Halothane
(B) Pudendal block with lidocaine
(C) Subarachnoid tetracaine
(D) Thiopental
(E) Vecuronium
A
Which of the following is most likely to decrease uterine tone?
(A) Administration of isoflurane 1%
(B) Administration of nitrous oxide 50%
(C) Intravascular injection of 5 ml of 0.5% bupivacaine
(D) Intravenous administration of ketamine 2 mg/kg
Which of the following is the most common infection transmitted through transfusion of blood products?
(A) Epstein-Barr virus
(B) Hepatitis B
(C) Hepatitis C
(D) Human immunodeficiency virus
(E) Toxoplasmosis
B
An otherwise healthy 70-year-old man receives 12 units of packed red blood cells for persistent diffuse bleeding during suprapubic prostatectomy. Hemoglobin concentration is 11 g/dL, platelet count is 55,000/mm3, plasma fibrinogen concentration is 180 mg/dL, protime is 14 sec, and partial thromboplastin time is 35 sec. The most appropriate therapy is administration of