10 Random Questions
The duration of action of an induction dose of thiopental is determined primarily by its
- (A) rate of elimination
- (B) rate of metabolism
- (C) redistribution from brain to fat
- (D) redistribution from brain to muscle
- (E) hepatic extraction
The following breath sounds are heard after placement of a left-sided double-lumen endobronchial tube. The most likely cause of these findings is
- (A) presence of both lumens in the right mainstem bronchus
- (B) presence of both lumens in the left mainstem bronchus
- (C) presence of both lumens in the trachea
- (D) herniation of the bronchial cuff at the bifurcation of the trachea
- (E) presence of the bronchial lumen in the right mainstem bronchus
A 14-month-old child has tetralogy of Fallot with dynamic obstruction to right ventricular outflow. Which of the following is most likely to decrease cyanosis in this child?
- (A) Calcium
- (B) Epinephrine
- (C) Nitroglycerin
- (D) Nitroprusside
- (E) Propranolol
A 40-year-old man is scheduled for emergency laparotomy for bowel obstruction. He is nauseated but has not vomited. Which of the following drugs administered intravenously preoperatively will decrease the risk for pulmonary aspiration?
- (A) Atropine
- (B) Droperidol
- (C) Metoclopramide
- (D) Ranitidine
- (E) None of the above
Properly performed local anesthetic block of the celiac plexus
- (A) requires that the needle tip be positioned anterior to the vertebral body of LI
- (B) preserves efferent parasympathetic outflow
- (C) produces urinary retention
- (D) is not associated with hypotension
- (E) produces truncal cutaneous hypesthesia
Pulmonary artery diastolic pressure increases acutely from 10 to 20 mmHg in a 28-year-old man undergoing cervical laminectomy in the sitting position. The most appropriate first step in the management of this patient is to
- (A) administer furosemide
- (B) aspirate from the proximal port of the pulmonary artery catheter
- (C) inflate the balloon on the pulmonary artery catheter
- (D) place the patient in the left lateral decubitus position
- (E) start an infusion of nitroglycerin
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
Compared with healthy nonhypertensive patients, in patients with untreated hypertension undergoing anesthesia and operation,
- (A) cerebral ischemia may occur at higher blood pressures
- (B) intravenous fluid should be restricted before induction
- (C) left ventricular hypertrophy enhances compensation for intraoperative fluid loss
- (D) responses to sympathetic stimulation are decreased
- (E) the incidence of intraoperative hypotension is lower
During extracorporeal shock wave lithotripsy, the shock wave should be synchronized with
- (A) the P wave of the ECG
- (B) the R wave of the ECG
- (C) the T wave of the ECG
- (D) peak inspiration
- (E) end-expiration
During cardiopulmonary bypass at a nasopharyngeal temperature of 28°C and a hematocrit of 20%, temperature-corrected PaCO2 is 50 mmHg and uncorrected PaCO2 is 60 mmHg. The most appropriate management is to
- (A) administer additional opioid
- (B) administer packed red blood cells to increase hematocrit to 25%
- (C) further decrease the patient's temperature
- (D) increase fresh gas flow to the oxygenator
- (E) institute mechanical ventilation