10 Random Questions
Compared with morphine 5 mg administered epidurally at T12, morphine 5 mg administered intravenously is associated with
- (A) greater incidence of urinary retention
- (B) less intense analgesia
- (C) less nausea and vomiting
- (D) longer duration of analgesia
- (E) longer time to maximum analgesia
Dantrolene
- (A) antagonizes the effect of nondepolarizing muscle relaxants
- (B) produces clinically detectable muscle weakness when administered intravenously prior to anesthesia
- (C) is indicated for neuroleptic malignant syndrome
- (D) may cause hepatic failure when used prophylactically before anesthesia
- (E) has increased effectiveness when combined with calcium entry blockers
A 5-month-old infant with tetralogy of Fallot is scheduled for elective inguinal herniorrhaphy. Which of the following would require the operation to be postponed?
- (A) Current propranolol therapy
- (B) Hematocrit of 65%
- (C) History of "tet spells"
- (D) Patent ductus arteriosus
- (E) Room air oxygen saturation of 82%
A 35-year-old woman undergoes a one-hour abdominal liposuction procedure under general anesthesia. During the procedure, 2000 ml of crystalloid is administered and 800 ml of fatty tissue is extracted. Thirty minutes postoperatively, blood pressure is 75/40 mmHg and heart rate is 100 bpm; SpO2 is 94% on room air. Which of the following is the most likely cause of these findings?
- (A) Acute systemic vasodilation
- (B) Circulating free fatty acids
- (C) Hypocalcemia
- (D) Inadequate intravascular volume replacement
- (E) Venous fat embolism
The best premedication regimen for a known active narcotic addict would include
- (A) secobarbital
- (B) diazepam
- (C) nalbuphine
- (D) morphine
- (E) droperidol
Measurement of mixed expired carbon dioxide concentration is necessary for the determination of
- (A) dead space
- (B) lung-thorax compliance
- (C) physiologic shunt fraction
- (D) diffusing capacity of the lungs
- (E) ventilatory response to carbon dioxide
In the diagram, point "X" represents a patient with severe left ventricular dysfunction. The points labeled 1, 2, and 3 each represent the results of a different therapeutic intervention. Which of the following represents the most likely intervention at each point?
- (A) 1-Dopamine, 2-Furosemide, 3-Nitroprusside
- (B) 1-Dopamine, 2-Nitroprusside, 3-Furosemide
- (C) 1-Furosemide, 2-Dopamine, 3-Nitroprusside
- (D) 1-Nitroprusside, 2-Dopamine, 3-Furosemide
- (E) 1-Nitroprusside, 2-Furosemide, 3-Dopamine
Which of the following findings is most likely in a 3-year-old child who has a secundum-type atrial septal defect with a 2:1 left-to-right shunt?
- (A) Pulmonary blood flow twice that of systemic blood flow
- (B) Pulmonary vascular resistance twice normal
- (C) Mean pulmonary artery pressure twice normal
- (D) Right atrial pressure twice normal
- (E) Hypoxemia while breathing room air
An obese, 35-year-old man had an episode of coughing followed by vomiting during induction of anesthesia for arthroscopy of the left knee. Intense wheezing developed bilaterally over five minutes. PaO2 is 60 mmHg, PaCO2 is 42 mmHg, and pH is 7.35. Optimal management following intubation of the trachea includes
- (A) mechanical ventilation with positive end-expiratory pressure (PEEP), cancellation of surgery, and transfer to the intensive care unit
- (B) saline lavage and continuation of surgery using halothane anesthesia
- (C) cancellation of surgery and administration of corticosteroids and antibiotics
- (D) thorough suctioning and proceeding with halothane anesthesia
- (E) cancellation of surgery, vigorous mechanical ventilation, thorough suctioning, and administration of aminophylline
A 62-year-old man, who had a myocardial infarction three years ago, complicated by congestive heart failure and renal failure, is undergoing a colectomy. A pulmonary artery catheter demonstrates a cardiac output higher than measurements recorded during a cardiac catheterization two months after the infarction. Which of the following most likely contributes to the increased cardiac output?
- (A) Creation of an arteriovenous fistula
- (B) Increased hemoglobin concentration from 10 to 12 g/dl
- (C) Stimulation of carotid body receptors
- (D) Transcutaneous nitroglycerin
- (E) Use of a beta-adrenergic blocker to prevent myocardial reinfarction