10 Random Questions
Which of the following pulmonary components is altered the most in a morbidly obese patient?
- (A) Total lung volume
- (B) Tidal volume
- (C) Inspiratory reserve volume
- (D) Expiratory reserve volume
- (E) Ratio of dead space to tidal volume
Cerebral blood flow is decreased by
- (A) chronic respiratory acidosis
- (B) hypoxia
- (C) hypoglycemia
- (D) polycythemia
- (E) the postictal state
A 50-year-old woman notes loss of sensation in the medial lower leg 24 hours after vaginal hysterectomy in the lithotomy position. Which of the following nerves is most likely to be injured?
- (A) Lateral femoral cutaneous
- (B) Obturator
- (C) Peroneal
- (D) Saphenous
- (E) Tibial
A patient who is scheduled for emergency debridement of an infected wound on the sole has trismus, rigidity of facial muscles, and spasms of the intercostal muscles, diaphragm, and extremities. During anesthesia, this patient is at increased risk for each of the following EXCEPT
- (A) hypotension
- (B) hypertension
- (C) tachycardia
- (D) diaphoresis
- (E) hypothermia
Which of the following statements concerning the ventilatory effects of inhalational anesthesia is true?
- (A) Assisted ventilation is not an effective technique to achieve normocarbia
- (B) Surgical stimulation does not affect ventilation
- (C) Combined doses of nitrous oxide and isoflurane depress ventilation the same as an equipotent dose of isoflurane alone
- (D) The ventilatory response to increasing carbon dioxide concentration is normal
- (E) The ventilatory response to hypoxemia is preserved
A 60-year-old woman who is taking propranolol for hypertension and is allergic to penicillin is anesthetized with thiopental and halothane for resection of an abdominal aortic aneurysm. Shortly after intubation she is given vancomycin 500 mg intravenously, after which her blood pressure decreases from 140/80 to 70/50 mmHg while her heart rate remains steady at 64 bpm. The most likely explanation for the decrease in blood pressure is
- (A) cross-sensitivity of penicillin and vancomycin
- (B) interaction of vancomycin and propranolol
- (C) vancomycin-induced anaphylactoid reaction
- (D) interaction of halothane and propranolol
- (E) interaction of halothane and vancomycin
A patient has sudden cardiopulmonary arrest five minutes after retrobulbar block with 0.75% bupivacaine 2 ml with hyaluronidase for ophthalmologic surgery. No premonitory changes were noted on the pulse oximeter. The most likely cause is
- (A) allergic reaction to hyaluronidase
- (B) direct cardiac toxicity
- (C) oculocardiac reflex
- (D) intravenous injection of local anesthetic
- (E) subarachnoid injection of local anesthetic
Which of the following relationships is indicated by the curve illustrated in the graph shown?
- (A) Intracranial blood volume (X) and intracranial pressure (Y)
- (B) PaCO2 (X) and minute ventilation (Y)
- (C) PaO2 (X) and hemoglobin saturation (Y)
- (D) Preload (X) and stroke volume (Y)
- (E) Systemic arterial pressure (X) and cerebral blood flow (Y)
A single dose of etomidate for induction of anesthesia will cause
- (A) adrenal cortical suppression
- (B) decreased skeletal muscle tone
- (C) hypotension
- (D) increased airway reactivity
- (E) tachycardia
A 40-year-old woman receives alfentanil 75 mcg/kg followed by an infusion of 1.5 mcg/kg/min for a one-hour cholecystectomy and cholangiogram. This regimen could be associated with each of the following EXCEPT
- (A) muscle rigidity
- (B) increased biliary tract pressure
- (C) inadequate anesthesia
- (D) postoperative respiratory depression
- (E) two to four hours of postoperative analgesia