An unvaccinated health care worker is stuck by a needle contaminated with blood from an HBsAg-positive patient. Which of the following statements concerning this situation is true?
(A) The risk for development of HIV infection is greater than the risk for development of hepatitis
(B) Hepatitis immune globulin is indicated if the health care worker is HBcAg positive
(C) Hepatitis B vaccine should be administered
(D) Hepatitis immune globulin will protect equally against hepatitis B and hepatitis C (non-A, non-B)
(E) Hepatitis B vaccine carries a risk for transmission of HIV
An acutely ill 65-year-old man with sepsis has severe hypophosphatemia. Which of the following is most likely to result from this electrolyte disorder?
Nine months after sustaining an injury to the left forearm, a 30-year-old woman has diffuse, burning pain on the anterior aspect of the forearm and posterior aspect of the hand and discoloration of the skin in the affected areas. The patient should be informed that
(A) if left untreated, muscle atrophy may develop in the involved limb
(B) if left untreated, the pain will remain well localized
(C) physical therapy is not indicated
(D) the symptoms are directly related to the severity of the initial injury
(E) the symptoms are most likely secondary to underlying peripheral vascular disease
In children with preoperative upper respiratory tract infection, which of the following is associated with the greatest risk for postoperative airway obstruction?
During an otherwise uneventful nitrous oxide-sevoflurane anesthetic in a spontaneously breathing patient, 85% nitrous oxide is accidently administered, resulting in a PO2 of 48 mmHg. Which of the following would be expected?
A patient undergoes differential spinal block for evaluation of persistent foot pain. If the pain returns coincident with a decrease in skin temperature, which of the following is the most appropriate conclusion?
During an aortic aneurysm repair, end-tidal carbon dioxide tension decreases from 35 to 20 mmHg in three breaths. The most likely cause is
(A) acute arteriovenous fistula
(B) bronchospasm
(C) decreased cardiac output
(D) increased tidal volume
(E) venous air embolism
C
A patient develops jaundice one week after undergoing laparoscopic cholecystectomy during halothane anesthesia. Laboratory studies show an increased serum alkaline phosphatase concentration, a mildly increased serum aspartate aminotransferase concentration, and a markedly increased conjugated bilirubin fraction. Which of the following is the most likely diagnosis?