10 Random Questions
Each of the following contributes to hypotension following induction of anesthesia with propofol EXCEPT
- (A) central vagal stimulation
- (B) decreased central sympathetic tone
- (C) direct myocardial depression
- (D) resetting of arterial baroreceptors
- (E) systemic vasodilation
During general anesthesia administered through a circle system, the soda lime absorbant is exhausted. No fresh soda lime is available for use. Which of the following is the most appropriate next step to prevent hypercapnia in this patient?
- (A) Decreasing the dead space of the circle system
- (B) Discontinuing nitrous oxide
- (C) Increasing the fresh gas flow
- (D) Increasing tidal volume
- (E) Switching to spontaneous ventilation
The five curves shown represent the uptake of enflurane, desflurane, halothane, isoflurane, and nitrous oxide. Which uptake curve best depicts desflurane?
- (A) Curve A
- (B) Curve B
- (C) Curve C
- (D) Curve D
- (E) Curve E
Which property of oxygen is detected by the fail-safe device on the anesthesia machine?
- (A) Concentration
- (B) Flow
- (C) Pressure
- (D) Partial pressure
- (E) Reserve volume
In performing a diagnostic left lumbar sympathetic block for lower extremity claudication, the tip of the needle ideally should lie at point
- (A) A
- (B) B
- (C) C
- (D) D
- (E) E
A 29-year-old man who has been nasotracheally intubated for two weeks following a motor vehicle accident has a fever (39C) and a constant headache. Leukocyte count is 18,000/mm3. The most likely cause is
- (A) fractured nasal septum
- (B) retropharyngeal abscess
- (C) maxillary sinusitis
- (D) meningitis
- (E) rhinovirus infection
To detect the delivery of a hypoxic gas mixture, the optimal location for an oxygen analyzer in this circle is
- (A) 1
- (B) 2
- (C) 3
- (D) 4
- (E) 5
In a patient with asthma, which of the following drugs used to treat supraventricular tachycardia is LEAST likely to induce bronchospasm?
- (A) Adenosine
- (B) Edrophonium
- (C) Esmolol
- (D) Propranolol
- (E) Verapamil
When used for irrigation during transurethral resection of the prostate, glycine 1.5% is associated with each of the following EXCEPT
- (A) hemolysis
- (B) hyperammonemia
- (C) cerebral edema
- (D) hypofibrinogencmia
- (E) visual disturbances
Which of the following is the most likely effect of long-term exposure to nitrous oxide at a concentration of 50 ppm?
- (A) Impaired cognitive function
- (B) Inhibition of vitamin B-12 absorption
- (C) Megaloblastic changes in bone marrow
- (D) Teratogenesis
- (E) Thrombocytopenia