10 Random Questions
Each of the following factors may lead to erroneous readings using pulse oximetry EXCEPT
- (A) electrocautery
- (B) high cardiac output states
- (C) infrared lights near the sensor
- (D) intravenous dyes
- (E) severe hemodilution
The most important cause of hypotension that occurs normally at initiation of cardiopulmonary bypass is
- (A) hemodilution
- (B) acidosis
- (C) decreased flow rate
- (D) vasodilation
- (E) hypothermia
Bronchospasm occurring during anesthesia in a patient with an ileal carcinoid is best treated by administration of
- (A) aminophylline
- (B) dexamethasone
- (C) halothane
- (D) ketamine
- (E) somatostatin
A 25-year-old woman undergoes a difficult open cholecystectomy during anesthesia with isoflurane, nitrous oxide, fentanyl, and vecuronium. Five units of blood are administered intraoperatively. Two days later, the patient has mildly increased serum transaminase concentrations and markedly increased alkaline phosphatase and direct bilirubin concentrations. Which of the following is the most likely cause?
- (A) Acute viral hepatitis
- (B) Hemolysis
- (C) Isoflurane-induced liver dysfunction
- (D) Retained common duct stone
- (E) Sepsis
Compared with morphine, a single epidural administration of fentanyl is associated with
- (A) delayed onset of analgesia
- (B) increased incidence of pruritus
- (C) increased incidence of respiratory depression
- (D) longer duration of action
- (E) more restricted segmental spread
After receiving an axillary block for carpal tunnel release, a patient has pain on incision. Which of the following nerves should be blocked at the level of the elbow to relieve the pain?
- (A) Intercostobrachial
- (B) Median
- (C) Musculocutaneous
- (D) Radial
- (E) Ulnar
The flow-volume loop indicated by the "X" is characteristic of
- (A) asthma
- (B) bronchiectasis
- (C) emphysema
- (D) pulmonary fibrosis
- (E) tracheal stenosis
Which of the following statements concerning cerebral vasospasm following intracranial hemorrhage is true?
- (A) It is accompanied by paradoxical intracranial hypotension
- (B) It responds to nitroprusside therapy
- (C) It persists more than 48 hours after hemorrhage
- (D) It is exacerbated by intravascular volume expansion
- (E) It is confirmed by ST-T wave changes in the absence of myocardial ischemia
If minute ventilation is held constant, which of the following is LEAST likely to alter PaCO2?
- (A) General anesthesia
- (B) Hypothermia
- (C) Increased dead space
- (D) Increased pulmonary shunt
- (E) Induced hypotension
The human immunodeficiency virus (HIV)
- (A) is inactivated by irradiation
- (B) is transmitted by cryoprecipitate
- (C) is transmitted by 5% albumin
- (D) passes through intact dermis
- (E) provokes an immediate antibody response