10 Random Questions
Which of the following is most responsible for the duration of action of local anesthetics?
- (A) Concentration
- (B) Metabolism
- (C) Molecular weight
- (D) Tissue protein binding
- (E) Volume injected
A patient being mechanically ventilated in the ICU requires wound debridement twice daily. Each of the following agents would be appropriate for induction of brief general anesthesia EXCEPT
- (A) nitrous oxide
- (B) etomidate
- (C) ketamine
- (D) methohexital
- (E) midazolam
The acute onset of hypotension without a decrease in mixed venous oxygen saturation is most likely associated with the onset of
- (A) hemorrhage
- (B) myocardial infarction
- (C) pulmonary edema
- (D) pulmonary embolus
- (E) sepsis
During steady-state intraoperative controlled mechanical ventilation, exhaled tidal volume will be increased by
- (A) changing to more compliant tubing in the ventilatory circuit
- (B) increasing fresh gas flow in the anesthesia machine
- (C) increasing nitrous oxide concentration in the inspired mixture
- (D) increasing ventilatory rate
- (E) moving the volume sensor as far as possible from the patient
The fetal heart rate and uterine contraction tracings shown are most consistent with
- (A) fetal acidosis
- (B) fetal cerebral hemorrhage
- (C) fetal head compression
- (D) fetal hypoxia
- (E) uteroplacental insufficiency
Ninety minutes after administration of succinylcholine 1 mg/kg to a 28-year-old woman, the train-of-four shows a T4:T1 ratio of 25%. This is most consistent with
- (A) dibucaine number of 30
- (B) hypersensitivity to succinylmonocholine
- (C) pregnancy
- (D) pretreatment with pancuronium 2 mg
- (E) severe cirrhosis
During attempted awake intubation, the patient gags when the laryngoscope presses on the base of the tongue. Which of the following cranial nerves is responsible for the afferent limb of this reflex?
- (A) Trigeminal
- (B) Facial
- (C) Glossopharyngeal
- (D) Vagus
- (E) Hypoglossal
The acute onset of hypotension without a decrease in mixed venous oxygen saturation is most likely associated with the onset of
- (A) hemorrhage
- (B) myocardial infarction
- (C) pulmonary edema
- (D) pulmonary embolus
- (E) sepsis
During cardiopulmonary bypass, the perfusionist notes that the mixed venous oxygen saturation has decreased from to 55%. Which of the following is the most likely cause?
- (A) Administration of a nitroprusside bolus
- (B) Administration of a thiopental bolus
- (C) Decrease in rectal temperature from 34°C to 28°C
- (D) Inadequate muscle relaxation
- (E) Increase in pump flow
Which of the following statements concerning the check valve of the common gas outlet on an anesthesia gas machine is true?
- (A) It prevents backflow into vaporizers
- (B) It prevents delivery of a hypoxic mixture
- (C) It prevents rebreathing
- (D) It is located downstream from the oxygen flush valve
- (E) It is required for proper functioning of the proportioning system