10 Random Questions
A 23-year-old man who is receiving his first anesthetic has not resumed spontaneous ventilation two hours after receiving succinylcholine. The train-of-four monitor shows no twitch response. Which of the following is the most likely cholinesterase genotype in this patient?
- (A) Atypical : atypical
- (B) Fluoride-resistant : fluoride-resistant
- (C) Fluoride-resistant : silent
- (D) Normal : normal
- (E) Normal : silent
A healthy 57-year-old man with a ureteral calculus is scheduled for immersion extracorporeal shock wave lithotripsy. Which of the following statements is true?
- (A) Delivery of the shock wave is timed by the R wave of the ECG
- (B) Continuous epidural anesthesia is contraindicated because of the risk for infection
- (C) If a regional technique is used, a T10 sensory level is required for adequate anesthesia
- (D) If general anesthesia is used, high tidal volumes and low respiratory rate are preferred
- (E) Removal of the patient from the bath is accompanied by an increase in blood pressure
Each of the following affects the induction dose of thiopental EXCEPT
- (A) acute ethanol intoxication
- (B) chronic use of barbiturates
- (C) intravascular volume
- (D) rate of hepatic extraction of thiopental
- (E) serum albumin concentration
Which of the following is greater in an obese patient than in a nonobese patient of equal height?
- (A) Milliliters of local anesthetic required for epidural block
- (B) Milligrams of succinylcholine required for intubation
- (C) Clearance of diazepam
- (D) Clearance of fentanyl
- (E) Oxygen consumption per body surface area
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
A combined epidural and general anesthetic is used for aortofemoral bypass surgery. Just prior to extubation, the patient received morphine 5 mg through the epidural catheter. Eleven hours later, he is unresponsive while breathing 40% oxygen from a face mask. Respiratory rate is 6/min and SpO2 is 92%. Arterial blood gas analysis shows PaO2 80 mmHg, PaCO2 84 mmHg, and pH 7.16. Which of the following statements concerning this patient is true?
- (A) Hypercarbia is contributing to the decreased level of consciousness
- (B) Naloxone is ineffective for reversing the respiratory depression
- (C) The oxygen saturation is higher than expected because of the pH
- (D) The risk for respiratory depression would have been lower with subarachnoid administration of 0.5 mg morphine
- (E) Residual local anesthetic is contributing to the respiratory depression
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
After removing the electrocautery pad from the thigh, a burn is noted at that site. Which of the following most likely contributed to this injury?
- (A) A line-isolation monitor fault
- (B) Current leak from the EKG module
- (C) Defective grounding of the electrocautery unit
- (D) Dried gel on the electrocautery pad
- (E) Excessive current setting for cutting mode
Monitoring sensory evoked potentials may be useful in detecting functional derangement of each of the following EXCEPT
- (A) cranial nerve pathways during posterior fossa operations
- (B) motor pathways during anterior cervical discectomy
- (C) dorsal column pathways during operations for spinal tumors
- (D) visual pathways during operations on the sphenoid wing
- (E) cortical pathways during carotid artery operations
An 8-kg, 1-year-old child has a measured blood loss of 50 ml during the first two hours of a rectal pull-through operation. Preoperative hematocrit was 31%. Balanced saline solution 150 ml has been administered for replacement. Urine output has been 2 ml for the last hour, heart rate is 160 bpm, and blood pressure is 40/15 mmHg. The most appropriate fluid therapy is,
- (A) 25% albumin
- (B) balanced salt solution
- (C) balanced salt solution and mannitol
- (D) 5% dextrose in 0.45% saline solution
- (E) packed red blood cells