10 Random Questions
Brain stem auditory evoked potentials are most likely to be absent during which of the following?
- (A) Anesthesia with 1.5 MAC isoflurane
- (B) Barbiturate coma
- (C) Hypotension to a mean arterial pressure of 50 mmHg
- (D) Surgical retraction of the temporal lobe
- (E) Surgical traction on the pons
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
Pulmonary artery diastolic pressure increases acutely from 10 to 20 mmHg in a 28-year-old man undergoing cervical laminectomy in the sitting position. The most appropriate first step in the management of this patient is to
- (A) administer furosemide
- (B) aspirate from the proximal port of the pulmonary artery catheter
- (C) inflate the balloon on the pulmonary artery catheter
- (D) place the patient in the left lateral decubitus position
- (E) start an infusion of nitroglycerin
A multi-orifices right heart catheter is being positioned by EKG control prior to sitting craniotomy. The EKG tracing is obtained between the distal tip of the catheter and the right arm lead. The most appropriate next step is to
- (A) leave the catheter in place
- (B) advance the catheter 2 to 3 cm
- (C) withdraw the catheter 2 to 3 cm
- (D) remove the catheter completely
- (E) change polarity of the EKG
In pregnant patients, which of the following is an effect of the long-term use of cocaine?
- (A) Decreased uterine tone
- (B) Decreased thiopental requirement
- (C) Increased isoflurane MAC
- (D) Increased sensitivity to ephedrine
- (E) Lower than expected level of block with tetracaine spinal analgesia
During an operation with cardiopulmonary bypass using a bubble oxygenator, the risk for systemic gas embolization increases when
- (A) a filter greater than 20 microns is used in the arterial infusion tubing
- (B) gas flow to the oxygenator is decreased below 3 L/min
- (C) the operation is a mitral valve replacement
- (D) the blood level in the oxygenator reservoir exceeds 1 liter
- (E) ventricular fibrillation occurs
A 68-year-old woman who is receiving urokinase for deep venous thrombosis and pulmonary emboli requires emergency laparotomy for a bleeding gastric ulcer. Which of the following agents is most appropriate to reverse the effects of urokinase?
- (A) Cryoprecipitate
- (B) Factor VIII concentrate
- (C) Fresh frozen plasma
- (D) Platelets
- (E) Vitamin K
The vapor pressure of a volatile anesthetic depends on
- (A) temperature only
- (B) ambient pressure only
- (C) temperature and ambient pressure
- (D) pressure and volume of the system
- (E) none of the above
A 30-year-old man has had burning pain, allodynia, and edema of the hand for six weeks after sustaining a forearm fracture. Appropriate treatment includes each of the following EXCEPT
- (A) physical therapy, employing stress loading
- (B) oral prazosin
- (C) intravenous regional sympathetic block with guanethidine
- (D) stellate ganglion block with 6% phenol
- (E) transcutaneous electrical nerve stimulation
The alveolar concentrations of anesthetics increase more rapidly in children than in adults because of a greater
- (A) blood volume (per kg body mass)
- (B) cardiac index
- (C) MAC
- (D) ratio of alveolar ventilation to functional residual capacity
- (E) tidal volume (per kg body mass)