10 Random Questions
A 65-kg man is scheduled for wrist surgery with intravenous regional anesthesia with 0.5% lidocaine 50 ml. Which of the following statements is true?
(A) This anesthetic is contraindicated if the patient has sickle cell disease
(B) Mottling of the skin after injection dictates abandonment of the technique
(C) Tourniquet discomfort is an indication to inject more local anesthetic
(D) Bupivacaine 0.5% could be substituted to prolong anesthesia
(E) Epinephrine (1:400,000) should be added to prolong anesthesia
Reveal Answer
ADVANCED
Regional & Pain
The figure describes the uptake of nitrous oxide 75% by individual tissue groups (VRG = vessel-rich group, MG = muscle group, FG = fat group) and their sum (total uptake, TU). Which set of labels accurately describes the curves?
(A) 1- MG, 2- FG, 3- VRG, 4- TU
(B) 1- VRG, 2- MG, 3- FG, 4- TU
(C) 1- FG, 2- MG, 3- TU, 4- VRG
(D) 1- TU, 2- FG, 3- MG, 4- VRG
(E) 1- TU, 2- VRG, 3- MG, 4- FG
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
A newly developed volatile anesthetic has a MAC of 10% in oxygen for adults. Which of the following statements concerning this anesthetic is true?
(A) The expected MAC of this drug in combination with 60% nitrous oxide is 7.5%
(B) The dose of this drug required to anesthetize a patient with acute amphetamine intoxication is less than the dose required for a normal patient
(C) The potency of this drug is 25% of a drug with a MAC of 2.5%
(D) The dose of this drug required to suppress the hormonal response to surgical incision is less than the MAC value
(E) The MAC of this drug is decreased by metabolic alkalosis
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics
A healthy 24-year-old woman is undergoing knee arthroscopy with spinal anesthesia to a level of T4. Which of the following findings is LEAST likely?
(A) Decreased heart rate
(B) Decreased hepatic blood flow
(C) Decreased mean arterial pressure
(D) Decreased tidal volume
(E) Hyperperistalsis
Reveal Answer
BASIC
Regional & Pain
Which of the following neural functions demonstrates the highest segmental block after spinal anesthesia?
(A) Afferent sympathetic activity
(B) Proprioception
(C) Sharp pain perception
(D) Temperature sensation
(E) Touch sensation
Reveal Answer
BASIC
Regional & Pain
Depression of cerebral oxygen requirements below the level required to create an isoelectric EEG can be achieved by
(A) administration of isoflurane
(B) administration of nimodipine
(C) barbiturate coma
(D) hyperventilation
(E) hypothermia
Reveal Answer
BASIC
Neuro
An oxygen-driven anesthesia ventilator with a bellows that ascends during exhalation develops a small hole in the bellows. Which of the following is the most likely effect?
(A) Alveolar hyperinflation
(B) Decreased inspiratory flow rate
(C) Decreased inspired oxygen concentration
(D) Increased concentration of inhalational agent
(E) Rebreathing of exhaled gases
Reveal Answer
An otherwise healthy 70-year-old man receives 12 units of packed red blood cells for persistent diffuse bleeding during suprapubic prostatectomy. Hemoglobin concentration is 11 g/dL, platelet count is 55,000/mm3, plasma fibrinogen concentration is 180 mg/dL, protime is 14 sec, and partial thromboplastin time is 35 sec. The most appropriate therapy is administration of
(A) cryoprecipitate
(B) desmopressin (DDAVP)
(C) epsilon-aminocaproic acid
(D) fresh frozen plasma
(E) platelets
Reveal Answer
ADVANCED
Transfusions & Fluids
Which of the following statements concerning awareness (recall) during opioid anesthesia is true?
(A) It is usually not associated with pain
(B) It correlates well with intact auditory evoked responses
(C) It is prevented if the dose of opioid blocks the hemodynamic response to stimuli
(D) It is prevented if the dose of opioid is adequate to prevent movement without muscle relaxants
(E) It is predicted by a specific EEG pattern
Reveal Answer
BASIC
General
Each of the following conditions is associated with upregulation of the acetylcholine receptor at the neuromuscular junction EXCEPT
(A) burn injuries
(B) myasthenia gravis
(C) prolonged bed rest
(D) prolonged use of neuromuscular relaxants
(E) upper motor neuron injury
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics