10 Random Questions
Long-term use of cimetidine is associated with
- (A) delayed emergence after thiopental induction
- (B) increased hypotension after morphine
- (C) increased risk for isoflurane-induced nephrotoxicity
- (D) prolonged action of succinylcholine
- (E) prolonged sedation with diazepam
Which of the following provides the earliest indication of myocardial ischemia during general anesthesia?
- (A) Cardiac index
- (B) Mixed venous oxygen saturation
- (C) Pulmonary artery occlusion pressure
- (D) Regional ventricular wall motion
- (E) ST-segment depression on ECG
A newborn infant is undergoing repair of gastroschisis. During closure of the abdominal wall, ventilatory pressures and central venous pressure increase markedly. The most appropriate management is to
- (A) administer a bronchodilator
- (B) decrease tidal volume and increase ventilatory rate
- (C) increase the neuromuscular block
- (D) increase the depth of anesthesia
- (E) ask the surgeon to reopen the abdomen
Which of the following factors is LEAST predictive of postoperative cardiac complications?
- (A) Congestive heart failure
- (B) Major vascular surgery
- (C) Premature ventricular contractions
- (D) Preoperative hypertension
- (E) Recent myocardial infarction
A patient undergoes thoracotomy in the lateral decubitus position. Which of the following maneuvers is most likely to increase PaO2 during one-lung ventilation?
- (A) Applying continuous positive airway pressure to the nondependent lung
- (B) Applying positive end-expiratory pressure to the dependent lung
- (C) Increasing inspiratory flow rate
- (D) Increasing the tidal volume
- (E) Increasing the ventilatory rate
Intrathecally administered opioids exert their analgesic effects primarily in the
- (A) brain stem
- (B) fourth ventricle
- (C) spinal nerve roots
- (D) spinothalamic tracts
- (E) substantia gelatinosa
A normal adult is receiving general anesthesia via a standard circle system and controlled ventilation. Mass spectrometer data are shown. Which event is most compatible with these data?
- (A) Endobronchial intubation
- (B) Hemorrhagic shock
- (C) Incompetent expiratory valve
- (D) Substantial decrease in fresh gas flow
- (E) Venous air embolism
Acute epiglottitis usually
- (A) requires a lateral radiograph of the neck for diagnosis
- (B) occurs in children 2 to 4 years of age
- (C) is treated effectively with racemic epinephrine
- (D) has a viral etiology
- (E) requires immediate awake intubation by direct laryngoscopy in the emergency department
Which of the following results in decreased mixed venous oxygen saturation?
- (A) Cardiogenic shock
- (B) Decreased metabolic rate
- (C) Increased cardiac output
- (D) Left-to-right intracardiac shunt
- (E) Pulmonary vasodilation
A 70-kg 22-year-old patient with head trauma and multiple fractures of the long bones is scheduled for fixation of bilateral femoral fractures. Preoperative laboratory studies show a serum sodium concentration of 150 mEq/L, a serum potassium concentration of 3.1 mEq/L, and a urine output greater than 500 ml/hr. Which of the following agents will decrease urine output?
- (A) 3% Saline solution
- (B) 5% Dextrose solution
- (C) Glucagon
- (D) Hydrocortisone
- (E) Vasopressin