Forty-eight hours after thoracotomy, a patient's T6-7 epidural catheter is removed and the distal 2 cm is noted to be missing. The patient felt no pain during removal and neurologic examination shows no abnormalities. After informing the patient, which of the following is the most appropriate next step in management?
During laser microsurgery of the larynx using an endotracheal tube, a fire occurs in the airway. Which of the following is the most appropriate initial management?
Following induction of general anesthesia, mask ventilation and the initial attempt at intubation is unsuccessful. Which of the following procedures is most appropriate?
Which of the following shaded areas most accurately represents the dead space of a properly functioning circle system?
C
A patient with hypokalemic familial periodic paralysis develops weakness of skeletal muscles at the end of an emergency appendectomy under spinal anesthesia. If the weakness is a result of the familial periodic paralysis, which of the following statements is true?
(A) Bicarbonate therapy is indicated
(B) Cardiac dysrhythmias are unlikely
(C) Initial treatment is intravenous edrophonium
(D) Potassium infusion is contraindicated
(E) The paralysis spares the diaphragm
E
Cyanide toxicity from nitroprusside is unlikely in patients with renal dysfunction because
(A) renal excretion of thiosulfate is decreased
(B) metabolic acidosis inactivates cyanide
(C) anemia inhibits breakdown of nitroprusside by oxyhemoglobin
(D) thiocyanate is formed in the liver
(E) the dose of nitroprusside necessary to lower blood pressure is greatly decreased