10 Random Questions
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
If minute ventilation is held constant, which of the following is LEAST likely to alter PaCO2?
- (A) General anesthesia
- (B) Hypothermia
- (C) Increased dead space
- (D) Increased pulmonary shunt
- (E) Induced hypotension
Infants with untreated pyloric stenosis are at increased risk for each of the following EXCEPT
- (A) congenital heart disease
- (B) dehydration
- (C) hypokalemia
- (D) increased gastric acidity
- (E) metabolic alkalosis
Which of the following relationships is indicated by the curve illustrated in the graph shown?
- (A) Intracranial blood volume (X) and intracranial pressure (Y)
- (B) PaCO2 (X) and minute ventilation (Y)
- (C) PaO2 (X) and hemoglobin saturation (Y)
- (D) Preload (X) and stroke volume (Y)
- (E) Systemic arterial pressure (X) and cerebral blood flow (Y)
Severe nausea and vomiting in the PACU is most effectively treated with a drug that acts as an antagonist at which of the following receptors?
- (A) Alpha-adrenergic
- (B) Beta-adrenergic
- (C) Dopamine
- (D) GABA
- (E) Glutamate
Intractable pain due to unresectable pancreatic carcinoma is most effectively treated with
- (A) bilateral neurolytic intercostal blocks at T10-12
- (B) bilateral sympathetic blocks with phenol
- (C) celiac plexus block with alcohol
- (D) epidural block with phenol
- (E) subarachnoid block with alcohol
Assignment of a patient to an ASA physical status category is used to
- (A) facilitate comparisons among different patient groups and institutions
- (B) guide the choice of anesthetic technique
- (C) permit accurate determination of charges for professional services
- (D) predict anesthetic risk
- (E) predict perioperative mortality
In an anesthetized patient being mechanically ventilated, end-expired carbon dioxide is 58 mmHg and peak inspiratory airway pressure is 15 cmH20. Ventilator settings indicate a delivered tidal volume of 800 ml, but the expiratory flowmeter shows a tidal volume of 360 ml. Which of the following is the most likely cause of this discrepancy?
- (A) Fresh gas flow of 0.5 L/min
- (B) Incompetence of the pressure-relief valve
- (C) Low ventilatory rate
- (D) Presence of a hole in the ventilator bellows
- (E) Prolongation of the inspiratory phase
The best indication that a patient is ready for discharge from an outpatient facility after spinal anesthesia is return of
- (A) pinprick sensation to the S4-5 dermatome
- (B) micturition
- (C) plantar flexion
- (D) proprioception of the big toe
- (E) knee extension
Which of the following statements concerning pipecuronium is true?
- (A) It has a faster onset than pancuronium
- (B) It increases systemic vascular resistance
- (C) It induces tachycardia
- (D) It is eliminated by the kidney
- (E) It induces histamine release