10 Random Questions
Which of the following factors will slow the induction of anesthesia in patients receiving volatile anesthetics?
- (A) Addition of 70% nitrous oxide
- (B) Increased cardiac output
- (C) Increased minute ventilation
- (D) Low blood/gas solubility coefficient
- (E) Previous pneumonectomy
A delay in surgery for 24 to 48 hours for preoperative stabilization and preparation is acceptable in each of the following neonatal conditions EXCEPT
- (A) biliary atresia
- (B) diaphragmatic hernia
- (C) meningomyelocele
- (D) pyloric stenosis
- (E) tracheoesophageal fistula
During apneic oxygenation (FiO2 1.0) through a rigid bronchoscope
- (A) duration of the procedure is limited by the increase in PaCO2
- (B) functional residual capacity decreases 5%/min
- (C) PaO2 remains unchanged for the first 5 minutes
- (D) PaCO2 increases 2 to 6 mmHg/min for 15 minutes and then reaches a plateau
- (E) PaO2 and PaCO2 equilibrate with mixed venous gases at the same rate
The ECG tracing shows
- (A) aberrant intraventricular conduction
- (B) acceleration of phase 4 depolarization of the sinus node
- (C) a compensatory pause
- (D) initiation of re-entrant supraventricular tachycardia
- (E) paroxysmal atrial fibrillation
One full E-cylinder of oxygen at 20°C can deliver 2 L/min of oxygen for at most
- (A) 30 minutes
- (B) 90 minutes
- (C) 3 hours
- (D) 5 hours
- (E) 12 hours
Which of the following statements concerning anesthesia machine flowmeters is true?
- (A) At high gas flows, viscosity is the predominant determinant of flow rate
- (B) At low flow rates, gas density is the predominant determinant of flow rate
- (C) Flowmeters should be upstream from the oxygen fail-safe device
- (D) The oxygen flowmeter should be upstream from other flowmeters
- (E) Tapered flow tubes allow a constant decrease in pressure across the float
Which of the following statements concerning neuroleptic malignant syndrome is true?
- (A) It does not respond to dantrolene therapy
- (B) It is inherited as an autosomal trait
- (C) It is not triggered by succinylcholine
- (D) It occurs after long-term use of L-dopa
- (E) The halothane-caffeine contracture test is negative in susceptible patients
A woman at 39 weeks' gestation has been in labor for 12 hours. She has had nausea and vomiting for the past eight hours. Maternal arterial blood gas values are PaO1 85 mmHg, PaCO2 31 mmHg, and pH 7.50. Which of the following is the most likely cause of fetal distress occurring at this time?
- (A) Hypocarbia-induced placental ischemia
- (B) Impaired fetal oxyhemoglobin dissociation
- (C) Shift to the left of the maternal oxyhemoglobin dissociation curve
- (D) Maternal hypovolemia
- (E) Maternal hypoxemia
A 73-year-old woman with a preoperative serum creatinine concentration of 2.1 mg/dl develops oliguria during enflurane anesthesia. Urine sodium concentration is 10 mEq/L and urine osmolality is 450 mOsm/L. The most likely cause of these findings is
- (A) acute renal failure
- (B) chronic renal insufficiency
- (C) decreased renal perfusion
- (D) fluoride nephrotoxicity
- (E) intraoperative administration of furosemide
Retrobulbar block for ophthalmologic surgery can be administered safely to patients with which of the following conditions?
- (A) Agitation
- (B) Bleeding disorder
- (C) Frequent coughing spasms
- (D) Increased intraocular pressure
- (E) Perforated globe