10 Random Questions
Which of the following will occur if the top of the oxygen flowmeter is cracked and leaking during anesthesia with nitrous oxide and oxygen?
(A) The back-pressure check valve will protect against a hypoxic gas mixture
(B) The fail-safe mechanism will protect against a hypoxic gas mixture
(C) The inspired oxygen concentration will be less than that set by the flowmeters
(D) The leak will be detected if the circle is pressurized prior to use
(E) The rotameter will accurately reflect the fresh gas flow to the patient
Reveal Answer
BASIC
Equipment & Physics
Assignment of a patient to an ASA physical status category is used to
(A) facilitate comparisons among different patient groups and institutions
(B) guide the choice of anesthetic technique
(C) permit accurate determination of charges for professional services
(D) predict anesthetic risk
(E) predict perioperative mortality
Reveal Answer
BASIC
General
The carbon dioxide/ventilation response curve
(A) is primarily a measure of the integrity of the peripheral chemoreceptors
(B) shows parallel displacement to the left in the presence of opioids
(C) is linear between a PaCO2 of 20 and 120 mmHg
(D) shows progressive changes in slope with increased doses of halogenated anesthetics
(E) is unaffected by a decrease in PaO2 to 60 mmHg
Reveal Answer
BASIC
Respiratory & Critical Care
Nitrous oxide is contraindicated during
(A) injection of sulfur hexafluoride for retinal tamponade
(B) repair of open eye injury
(C) scleral buckling with synthetic bands
(D) strabismus surgery
(E) trabeculectomy for glaucoma
Reveal Answer
Which of the following statements concerning pulmonary function in patients with pulmonary fibrosis is true?
(A) Diffusion capacity is decreased
(B) Pulmonary artery diastolic-to-occlusion pressure gradients are normal
(C) Ventilation-perfusion relationships are normal
(D) Static pulmonary compliance is unchanged
(E) Mechanical ventilation with slow rate and large tidal volume is optimal
Reveal Answer
ADVANCED
Respiratory & Critical Care
A 55-year-old patient with hypertrophic cardiomyopathy (IHSS) is undergoing bladder suspension with enflurane 1%, nitrous oxide 50%, and oxygen 50%. Junctional tachycardia and hypotension develop suddenly immediately after skin incision. The most appropriate management is to
(A) decrease enflurane concentration
(B) administer an intravenous fluid bolus
(C) administer intravenous esmolol
(D) administer intravenous phenylephrine
(E) begin nitroglycerin infusion
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
Following protamine administration, profound pulmonary hypertension is most likely initiated by release of
(A) epinephrine
(B) histamine
(C) leukotriene
(D) norepinephrine
(E) thromboxane
Reveal Answer
ADVANCED
Pharmacology & Pharmacokinetics
Cardiac
Monitoring sensory evoked potentials may be useful in detecting functional derangement of each of the following EXCEPT
(A) cranial nerve pathways during posterior fossa operations
(B) motor pathways during anterior cervical discectomy
(C) dorsal column pathways during operations for spinal tumors
(D) visual pathways during operations on the sphenoid wing
(E) cortical pathways during carotid artery operations
Reveal Answer
ADVANCED
Neuro
During recovery from halothane anesthesia, an alveolar concentration of 0.1% will have the greatest effect on
(A) myocardial contractility
(B) ventilatory response to hypercarbia
(C) atrioventricular conduction
(D) ventilatory response to hypoxia
(E) neuromuscular transmission
Reveal Answer
BASIC
Pharmacology & Pharmacokinetics