10 Random Questions
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
A 72-year-old man has massive venous hemorrhage during a radical prostatectomy. Blood pressure decreases from 110/60 to 75/30 mmHg and central venous pressure decreases from 12 to 4 mmHg. PetC02 decreases from 34 to 24 mmHg during constant minute ventilation. The most appropriate next step should be to
- (A) apply positive end-expiratory pressure to the breathing circuit
- (B) attempt to aspirate air from the central venous catheter
- (C) expand intravascular volume
- (D) place the patient in the Trendelenburg position
- (E) turn the patient to the left lateral decubitus position
Which of the following is most effective in preventing intraoperative hypothermia in adults?
- (A) Heating and humidifying inspired gases
- (B) Maintaining a warm operating room
- (C) Using a circulating warm-water mattress
- (D) Using reflective coverings
- (E) Warming intravenous fluids
The arterial waveform and EKG shown are from a 60-year-old man with uremia who is the PACU after hip surgery under general anesthesia. The patient is drowsy, extubated, and breathing easily. The most likely diagnosis is
- (A) hypovolemia
- (B) myocardial ischemia
- (C) nontension pneumothorax
- (D) pericardial tamponade
- (E) pulmonary embolus
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
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
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?
- (A) A somatic origin is ruled out
- (B) The patient has causalgia
- (C) The patient has peripheral vascular disease
- (D) The pain is caused by central neuropathy
- (E) Lumbar sympathetic blocks are indicated
A 70-year-old patient is shivering and has chest pain in the PACU following a cholecystectomy. Heart rate is 120 bpm, and blood pressure is 220/120 mmHg. SpO2 is 97% at an FiO2 of 0.4. An ECG shows ST-T wave changes, which are not affected by intravenous administration of nitroglycerin. Which of the following is the most appropriate next step?
- (A) Administration of esmolol
- (B) Administration of hydralazine
- (C) Administration of nitroprusside
- (D) Application of a warming blanket
- (E) Increasing FiO2
Which of the following is described by the standard deviation during analysis of the results of a clinical study?
- (A) Central tendency of the study results
- (B) Distribution of the results of the study group
- (C) Range of the results of the study group
- (D) Regression analysis of the study group
- (E) Statistical significance of the difference between the study groups
During total cardiopulmonary bypass, metabolic acidosis and decreasing mixed venous oxygen saturation are noted. The most likely cause is
- (A) hypothermia
- (B) hypoperfusion
- (C) hypocarbia
- (D) rewarming
- (E) light anesthesia