10 Random Questions
Which of the following relationships is indicated by the curve illustrated in the graph shown?
- (A) Intracranial blood volume (X) and intracranial pressure (Y)
- (B) PaCO2 (X) and minute ventilation (Y)
- (C) PaO2 (X) and hemoglobin saturation (Y)
- (D) Preload (X) and stroke volume (Y)
- (E) Systemic arterial pressure (X) and cerebral blood flow (Y)
A 64-year-old, 70-kg woman treated with lithium for manic-depressive psychosis is given methohexital 90 mg and succinylcholine 35 mg intravenously for electroconvulsive therapy. Ten minutes later she remains sedated and the peripheral nerve stimulator shows a decreased twitch response. The most likely explanation is
- (A) cerebral hypoxia
- (B) postictal depression
- (C) relative overdose of methohexital
- (D) unrecognized atypical pseudocholinesterase
- (E) residual lithium effects
During anesthesia using the Bain circuit
- (A) PaCO2 is independent of minute volume if fresh gas flow is greater than 17 ml/kg
- (B) PaCO2 is independent of fresh gas flow if minute volume is greater than 100 ml/kg
- (C) PaCO2 may be normal in the presence of rebreathing
- (D) carbon dioxide removal is more efficient during spontaneous ventilation than during controlled ventilation
- (E) less body heat is lost than with a circle system
A 25-year-old woman is receiving magnesium sulfate for eclampsia at 36 weeks' gestation. Each of the following is a maternal effect of this treatment EXCEPT
- (A) sedation
- (B) sensitization to depolarizing muscle relaxants
- (C) sensitization to nondepolarizing muscle relaxants
- (D) decreased uterine blood flow
- (E) loss of deep tendon reflexes prior to significant cardiac dysfunction
Bupivacaine 30 ml injected into the inguinal perivascular space will usually block the
- (A) femoral, lateral femoral cutaneous, and obturator nerves
- (B) ilioinguinal, femoral, and sciatic nerves
- (C) femoral, sciatic, and obturator nerves
- (D) ilioinguinal, iliohypogastric, and pudendal nerves
- (E) sciatic, femoral, and posterior femoral cutaneous nerves
Which of the following findings on the left is most likely to be associated with an increased risk of complications with cannulation of the left internal jugular vein compared with cannulation of the right internal jugular vein?
- (A) Longer recurrent laryngeal nerve
- (B) Lower location of the cupola of the pleura
- (C) More acute angle between the internal jugular and innominate veins
- (D) More anterior location of the phrenic nerve
- (E) Presence of the thoracic duct
A 75-year-old man is confused, restless, and disoriented two days after an aortic aneurysm repair. Serum sodium concentration is 112 mEq/L, serum osmolality is low, and urine is hypertonic. The most appropriate treatment is
- (A) restriction of fluid intake
- (B) administration of isotonic saline solution
- (C) administration of hypertonic (3%) saline solution
- (D) administration of spironolactone
- (E) infusion of mannitol 25 g
Patients with acute alcohol intoxication are at increased risk for each of the following complications of general anesthesia EXCEPT
- (A) aspiration of gastric contents
- (B) hyperglycemia
- (C) hypothermia
- (D) ketoacidosis
- (E) respiratory depression
Proper zeroing of an arterial pressure transducer attached to a supine anesthetized patient is best accomplished by
- (A) continuous flow of fluid through the intravascular catheter
- (B) opening the system to air at heart level
- (C) placement of the transducer diaphragm at heart level
- (D) proper damping of the transducer system
- (E) zeroing the transducer during the expiration phase of mechanical ventilation
Intraocular pressure is
- (A) decreased by glycopyrrolate
- (B) increased by hyperventilation
- (C) decreased by halothane
- (D) increased by nondepolarizing muscle relaxants
- (E) increased by phenylephrine eye drops