10 Random Questions
During postoperative indirect laryngoscopy, the vocal cords appear symmetric during quiet breathing and approximate to the left of midline during phonation. The most likely cause is
- (A) pure abductor paralysis of the left cord
- (B) pure abductor paralysis of the right cord
- (C) abductor and adductor paralysis of the left cord
- (D) abductor and adductor paralysis of the right cord
- (E) adductor paralysis of both cords
During insufflation of the peritoneal cavity with carbon dioxide at the start of laparoscopy, heart rate increases to 140 bpm, blood pressure decreases to 70/40 mmHg, and a loud murmur is heard through the esophageal stethoscope. The most appropriate immediate step is to
- (A) administer a vasoconstrictor
- (B) infuse crystalloid solution rapidly
- (C) discontinue the inhaled anesthetic
- (D) insert a central venous catheter
- (E) deflate the abdomen
To detect the delivery of a hypoxic gas mixture, the optimal location for an oxygen analyzer in this circle is
- (A) 1
- (B) 2
- (C) 3
- (D) 4
- (E) 5
When inspired anesthetic gases are humidified
- (A) most particles 1 to 2 microns in size are deposited in the trachea
- (B) respiratory epithelial cilia become less active
- (C) alveolar water vapor pressure is unchanged
- (D) respiratory heat loss is abolished
- (E) sterilization of breathing apparatus is mandatory
Which of the following combinations of hemoglobin, blood gases, and cardiac output provides the greatest delivery of oxygen to tissue? (Hb, PaO2, SaO2, CO)
- (A) 7.0 85 95 7.0
- (B) 8.0 290 100 8.0
- (C) 9.9 61 90 9.8
- (D) 12.0 140 100 4.5
- (E) 16.0 40 75 5.8
Which of the following is most likely to be effective in the treatment of clinically evident cerebral vasospasm occurring after subarachnoid hemorrhage?
- (A) Administration of nimodipine
- (B) Administration of thiopental
- (C) Decreasing cerebral perfusion pressure
- (D) Hypercarbia
- (E) Hypocarbia
The effect of succinylcholine is terminated at postsynaptic effector cells by
- (A) binding and uptake by effector cells
- (B) diffusion into capillaries
- (C) hydrolysis by junctional cholinesterase
- (D) hydrolysis by pseudocholinesterase
- (E) spontaneous degradation to succinylmonocholine
A 62-year-old patient who is undergoing femoral-popliteal arterial bypass grafting during general anesthesia develops supraventricular tachycardia. Heart rate is 165 bpm and blood pressure is 90/50 mmHg. Which of the following is the LEAST appropriate treatment of the tachycardia?
- (A) Adenosine
- (B) Esmolol
- (C) Phenylephrine
- (D) Procainamide
- (E) Verapamil
Each of the following increases arterial to end-tidal carbon dioxide tension difference EXCEPT
- (A) addition of positive-end expiratory pressure
- (B) deliberate hypotension
- (C) endobronchial intubation
- (D) hypovolemia
- (E) pulmonary embolism
Each of the following changes is expected with deliberate hypothermia EXCEPT
- (A) decreased unloading of oxygen from hemoglobin
- (B) a 5% decrease in MAC for each 1°C decrease in temperature
- (C) increased arterial oxygen and carbon dioxide contents
- (D) a 50% decrease in cerebral metabolic rate at 28°C
- (E) spike and dome EEG activity at temperatures below 30°C