10 Random Questions
The jet ventilation technique using an injector during laryngobronchoscopy relies on
- (A) air entrainment
- (B) relative density of inhaled gases
- (C) presence of an endotracheal tube
- (D) presence of spontaneous ventilation
- (E) use of helium-oxygen mixtures
The sudden onset of pulmonary edema can be caused by each of the following EXCEPT
- (A) rapid re-expansion of the lungs following pneumothorax
- (B) upper airway obstruction
- (C) oxygen toxicity
- (D) rupture of mitral papillary muscle
- (E) severe preeclampsia
A 55-year-old man is undergoing craniotomy in the sitting position. Mean arterial pressure is 75 mmHg; arterial blood gas values are PaCO2 41 mmHg and pH 7.37. End-tidal CO2 is 7 mmHg. Which of the following is the most likely cause of the increased PaCO2 to PetCO2 gradient?
- (A) Decreased cardiac output
- (B) Endobronchial intubation
- (C) Hyperinflation of the lungs
- (D) Partial disconnect of the capnograph sample tubing
- (E) Venous air embolism
After the first 70 minutes of a transurethral resection of the prostate, a 70-year-old man becomes confused and has tachycardia, hypertension, and shortness of breath. Serum sodium concentration is 116 mEq/L. After informing the surgeon that the procedure should be terminated as soon as possible, the most appropriate next step would be to
- (A) administer furosemide
- (B) administer labetalol
- (C) administer 3% sodium chloride
- (D) change the irrigating solution to normal saline
- (E) induce general endotracheal anesthesia
Which of the following detects the smallest volume of venous air embolization?
- (A) Changing the precordial Doppler ultrasound signal
- (B) Decreasing PetC02
- (C) Decreasing Sp02
- (D) Increasing central venous pressure
- (E) Increasing pulmonary artery pressure
Each of the following factors decreases uterine blood flow EXCEPT
- (A) aortocaval compression
- (B) hypocarbia
- (C) hypoxia
- (D) sympathetic block
- (E) uterine contractions
The most medial of the following components in the antecubital fossa is the
- (A) brachial artery
- (B) brachioradialis muscle
- (C) cephalic vein
- (D) median nerve
- (E) radial nerve
Which of the following is an effect of ketorolac administered after vaginal hysterectomy?
- (A) Euphoria
- (B) Prolonged prothrombin time
- (C) Respiratory depression
- (D) Suppression of inflammation
- (E) Thrombocytopenia
The hemodynamic changes shown would most likely result from infusion of
- (A) dopamine
- (B) epinepherine
- (C) dobutamine
- (D) norepinepherine
- (E) isoproterenol
A patient is undergoing exploration of a stab wound to the left side of the neck. On awake laryngoscopy, the left vocal cord is in midposition and the right vocal cord is abducted during inspiration. The most likely cause of these findings is trauma to which of the following structures on the left?
- (A) C7-8 nerve root
- (B) Stellate ganglion
- (C) Glossopharyngeal nerve
- (D) Superior laryngeal nerve
- (E) Vagus nerve