10 Random Questions
Block of each of the following nerves is required for inguinal herniorrhaphy EXCEPT the
- (A) genitofemoral
- (B) iliohypogastric
- (C) ilioinguinal
- (D) obturator
- (E) twelfth thoracic
During laser microsurgery of the larynx using an endotracheal tube, a fire occurs in the airway. Which of the following is the most appropriate initial management?
- (A) Increase FiO2 to 1.0
- (B) Instill saline into the endotracheal tube
- (C) Perform cricothyroidotomy
- (D) Remove the endotracheal tube
- (E) Ventilate with air
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
Which of the following findings differentiates the pickwickian syndrome from morbid obesity?
- (A) Carbon dioxide retention
- (B) Upper airway obstruction
- (C) Decreased forced expiratory volume
- (D) Increased shunt fraction
- (E) Increased functional residual capacity
The twitch responses shown are from a healthy 80-kg patient anesthetized with fentanyl and nitrous oxide. Relaxant drugs X and Y are most likely
- (A) X: atracurium 30 mg, Y: vecuronium 4 mg
- (B) X: atracurium 30 mg, Y: vecuronium 8 mg
- (C) X: pancuronium 4 mg, Y: pancuronium 8 mg
- (D) X: vecuronium 4 mg, Y: atracurium 30 mg
- (E) X: vecuronium 4 mg, Y: pancuronium 8 mg
During laparotomy for a ruptured spleen, unexplained oozing occurs after infusion of 2 liters of crystalloid and 3 units of blood. The most likely cause is
- (A) citrate toxicity
- (B) dilutional thrombocytopenia
- (C) hemolytic transfusion reaction
- (D) labile clotting factor deficiency
- (E) leukoagglutinin reaction
A 16-year-old child has an arterial catheter inserted prior to a potentially difficult intubation for a craniofacial operation. While awake and breathing room air, arterial blood gas values are: PaO2 134 mm Hg, PaCO2 28 mm Hg, and pH 7.45. These values can be explained by
- (A) excess heparin mixed with the arterial sample
- (B) a patient core temperature of 38°C
- (C) excess air entrained in the syringe during sampling
- (D) storing the sample at room temperature for 15 minutes before processing
- (E) anxiety and hyperventilation
Deliberate hypothermia and circulatory arrest is planned for clipping of a giant basilar artery aneurysm. Which of the following statements is true?
- (A) Administration of a muscle relaxant slows the cooling process
- (B) Anesthesia is not required if body temperature is below 31°C
- (C) Decreasing body temperature below the level at which the EEG is isoelectric further decreases cerebral metabolic rate for oxygen
- (D) Sinus bradycardia during cooling results from increased intracranial pressure
- (E) T-wave inversion during cooling indicates myocardial ischemia
Which of the following is the most common initial manifestation of malignant hyperthermia?
- (A) Hyperkalemia
- (B) Increased distal esophageal temperature
- (C) Increased PETCO2
- (D) Red discoloration of urine
- (E) Ventricular irritability
Which of the following statements regarding carbon monoxide poisoning is true?
- (A) Breathing 100% oxygen at 1 atmosphere reduces the carboxyhemoglobin half-life
- (B) Effective treatment includes administration of methylene blue
- (C) It is commonly associated with respiratory acidosis
- (D) It is incompatible with a normal Sp02 while breathing room air
- (E) The oxyhemoglobin dissociation curve is shifted to the right