10 Random Questions
Epidural block is safer at the L3-L4 interspace than at the T12-L1 interspace because of the location of the
- (A) anterolateral epidural veins
- (B) inferior border of the cauda equina
- (C) inferior border of the conus medullaris
- (D) inferior border of the subarachnoid space
- (E) blood supply to the anterior spinal cord
Which of the following statements concerning naloxone is true?
- (A) Elimination half-life is longer than that of the majority of mu-receptor opioids
- (B) It does not cross the placenta
- (C) It has mixed agonist-antagonist effects
- (D) It increases the MAC of inhaled anesthetic drugs
- (E) It relieves opioid-induced spasm of the sphincter of Oddi
Compared with labetalol for induction of hypotension, nitroprusside is associated with
- (A) greater cerebral vasodilation
- (B) greater dependence on hepatic metabolism
- (C) less activation of the renin-angiotensin system
- (D) less intrapulmonary shunt
- (E) less venodilation
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
A 70-year-old man who underwent bilateral carotid endarterectomies two years ago is to undergo anesthesia and surgery. The denervation of the carotid bodies is likely to result in
- (A) chronic respiratory alkalosis
- (B) decreased ventilatory response to hypoxemia
- (C) increased ventilatory response to hypercarbia
- (D) labile hypertension
- (E) resting bradycardia
Failure of contrast material to enter the duodenum following intraoperative cholangiography is most likely related to administration of
- (A) butorphanol
- (B) fentanyl
- (C) halothane
- (D) nalbuphine
- (E) naloxone
Which of the following statements concerning caudal anesthesia in children is true?
- (A) The dural sac extends further caudad than in adults
- (B) Delay of postoperative micturition occurs in most patients
- (C) The sensory level of analgesia is poorly correlated with the dose of local anesthetic
- (D) It is technically difficult because of poorly defined sacral anatomy
- (E) It is contraindicated in infants younger than 1 year of age
This flow-volume loop from a 57-year-old man is most consistent with which of the following conditions?
- (A) Bronchospasm
- (B) Decreased vital capacity
- (C) Myasthenia gravis
- (D) Narrowing of the upper airway
- (E) Pneumothorax
Which of the following statements concerning the innervation of the larynx is true?
- (A) The glossopharyngeal nerve provides motor innervation to the vocal cords
- (B) The recurrent laryngeal nerve provides sensory innervation to the mucosa of the larynx above the vocal cords
- (C) The hypoglossal nerve provides sensory innervation to the aryepiglottic folds
- (D) Unilateral recurrent laryngeal nerve injury results in an abducted vocal cord on the injured side
- (E) The vagus nerve provides innervation to all structures below the vocal cords
A 75-kg, 45-year-old patient with quadriplegia at the level of C6 is scheduled for elective cholecystectomy. Pulmonary function tests show an FVC of 2.4 L and an FEV, of 1.2 L. Which of the following is the most appropriate conclusion based on these findings?
- (A) Intercostal muscle function is normal
- (B) SpO, will be 80% or less while breathing room air
- (C) Total lung capacity is normal
- (D) The patient has chronic obstructive pulmonary disease
- (E) These findings are expected in this patient