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
A
Which of the following statements concerning the pharmacokinetics of local anesthetics is true?
(A) Decreased molecular weight is associated with decreased incidence of allergic reactions
(B) Decreased protein binding is associated with decreased systemic toxicity
(C) Increased ionization is associated with increased placental transfer
(D) Increased lipid solubility is associated with faster onset
(E) Presence of an ester linkage is associated with increased duration of action
During spinal anesthesia in a healthy patient, the sensory level rises to C8. The patient will most likely have
(A) hoarseness due to block of the recurrent laryngeal nerve
(B) numbness over the clavicles
(C) impaired resting ventilation
(D) numbness of the little finger
(E) inability to raise his arm
D
You see a flash of fire from the endotracheal tube of a patient undergoing carbon dioxide laser excision of laryngeal polyps. The immediate response should be to
(A) discontinue the fresh gas flow
(B) increase the nitrous oxide concentration
(C) spray water down the endoscope
(D) insert wet pads into the pharynx
(E) remove the endotracheal tube
E
During extracorporeal shock wave lithotripsy, the shock wave should be synchronized with
To predict the requirement for isoflurane in milliliters of vapor per minute during closed circuit anesthesia, each of the following is necessary EXCEPT
In a healthy patient receiving an epidural analgesic infusion postoperatively, clear fluid is noted to drip back freely from the epidural catheter. Which of the following findings correctly identifies the associated fluid?
(A) Precipitation when mixed with an equal volume of pancuronium = local anesthetic
A 27-year-old man with chronic renal failure is to undergo revision of an arteriovenous graft. He insists on general anesthesia. Hemodialysis was completed two hours ago, and serum potassium concentration is now 5 mEq/L. Which of the following statements concerning anesthetic management of this patient is true?
(A) Enflurane is contraindicated
(B) Succinylcholine is contraindicated
(C) Neostigmine will be required in larger than usual dosage
(D) The duration of action of atracurium will be prolonged
(E) The duration of action of propofol will be unchanged