Preoperative administration of alpha-adrenergic inhibitors will usually reverse ECG changes due to
(A) catecholamine myocarditis
(B) Preoperative administration of alpha-adrenergic inhibitors decreases operative mortality
(C) Beta-adrenergic inhibitors should be administered preoperatively only in conjunction with alpha-adrenergic
inhibitors
(D) Vasopressor therapy may be necessary postoperatively for treatment of hypotension
E
Static lung compliance is decreased by each of the following EXCEPT
(A) pulmonary emphysema
(B) congestive heart failure
(C) adult respiratory distress syndrome
(D) pulmonary fibrosis
(E) inhalation anesthesia
A
During cardiopulmonary bypass, the perfusionist notes that the mixed venous oxygen saturation has decreased from to 55%. Which of the following is the most likely cause?
(A) Administration of a nitroprusside bolus
(B) Administration of a thiopental bolus
(C) Decrease in rectal temperature from 34°C to 28°C
To predict the requirement for isoflurane in milliliters of vapor per minute during closed circuit anesthesia, each of the following is necessary EXCEPT
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 36-year-old woman who undergoes peritoneal dialysis for chronic renal failure requires emergency surgical exploration for bowel obstruction. Serum creatinine concentration is 9.8 mg/dl and BUN concentration is 124 mg/dl. The most likely abnormality of coagulation is
(A) decreased euglobulin lysis time
(B) decreased platelet count
(C) prolonged activated partial thromboplastin time