10 Random Questions
Which of the following is the primary physiologic response in a neonate exposed to a hypothermic environment?
(A) Hyperventilation
(B) Increased 2,3-DPG concentration in erythrocytes
(C) Metabolism of brown fat
(D) Shivering
(E) Vasoconstriction
Reveal Answer
ADVANCED
Pediatric
Which of the following is an advantage of a circle system over a Mapleson D system?
(A) Better anesthetic conservation
(B) Lower dead space
(C) Lower circuit resistance
(D) More efficient scavenging
(E) More rapid changes in inspired gas concentration
Reveal Answer
During Harrington rod instrumentation for scoliosis, monitoring somatosensory evoked potentials
(A) is unreliable if halothane is used
(B) eliminates the need for a wake-up test
(C) accurately assesses proprioceptive integrity
(D) accurately assesses motor function integrity
(E) is unreliable if nondepolarizing muscle relaxants are used
Reveal Answer
ADVANCED
Pediatric
Neuro
Each of the following landmarks is used in performing wrist block to remove a cystic mass on the fourth digit EXCEPT the
(A) extensor pollicis longus tendon
(B) ulnar artery
(C) palmaris longus tendon
(D) flexor carpi radialis tendon
(E) flexor carpi ulnaris tendon
Reveal Answer
ADVANCED
Regional & Pain
A 40-year-old man who is scheduled to undergo repair of a tendon laceration of the left hand has complete anesthesia in the median, radial, and ulnar nerve distributions after supraclavicular block. Two hours of tourniquet inflation are required for completion of the procedure. The most appropriate next step is an additional block of which of the following?
(A) Axillary nerve
(B) Intercostobrachial nerve
(C) Lateral antebrachial cutaneous nerve
(D) Musculocutaneous nerve
(E) Stellate ganglion
Reveal Answer
ADVANCED
Regional & Pain
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
Reveal Answer
ADVANCED
Pharmacology & Pharmacokinetics
A 30-year-old man is brought to the emergency department after being rescued from a house fire. With the trachea intubated and FiO2 at 1.0, arterial blood gas values are PaO2 495 mmHg, PaCO2 28 mmHg, and pH 7.28. Hemoglobin saturation measured by co-oximeter is 50%. The most appropriate next step is to
(A) add positive end-expiratory pressure
(B) add n-acetylcysteine to the inhaled gases
(C) administer sodium bicarbonate intravenously
(D) transfuse 2 units of packed red blood cells
(E) transfer to a hyperbaric chamber
Reveal Answer
ADVANCED
General
Which of the following is the most likely beneficial effect of hyperbaric oxygen therapy in a 24-year-old scuba diver with decompression sickness?
(A) Decreased production of carbon dioxide
(B) Decreased size of gas bubbles
(C) Increased functional residual capacity
(D) Reversal of membrane pressure effects
(E) Shift of the oxyhemoglobin dissociation curve to the left
Reveal Answer
ADVANCED
Respiratory & Critical Care
One hour after an open cholecystectomy, a 42-year-old patient is hemodynamically stable and breathing spontaneously (rate 10/min and regular) at an FiO2 of 0.4. Fentanyl, isoflurane, nitrous oxide, and pancuronium were used during the procedure. Analysis of arterial blood gases (pH, pCO2, pO2) is most likely to show:
(A) 7.18 40 100
(B) 7.18 60 140
(C) 7.28 50 85
(D) 7.40 26 220
(E) 7.40 40 40
Reveal Answer
BASIC
Respiratory & Critical Care
A subarachnoid block to a sensory level of the second thoracic dermatome is associated with each of the following EXCEPT
(A) total sympathetic block
(B) decreased gastrointestinal smooth muscle tone
(C) bradycardia
(D) relaxation of gastrointestinal sphincters
(E) decreased renal blood flow
Reveal Answer
BASIC
Regional & Pain