A patient develops urticaria and pruritus while receiving a blood transfusion in the PACU. Blood pressure and heart rate are unchanged from pretransfusion values. The most appropriate action is administration of
A 40-year-old woman with chronic renal failure is undergoing revision of an arteriovenous shunt with general anesthesia. The capnographic waveform was obtained during spontaneous ventilation 20 minutes after administration of succinylcholine and tracheal intubation. Which of the following is the most likely cause of these findings?
(A) Leaking endotracheal cuff
(B) Channeling of soda lime
(C) Light anesthesia
(D) Metabolic acidosis
(E) Residual neuromuscular block
B
Which of the following statements concerning the choice of nitroprusside or nitroglycerin to induce deliberate hypotension is true?
(A) Nitroglycerin is more potent
(B) Nitroglycerin produces hypotension by acting on both arterial and venous capacitance vessels
(C) Nitroprusside produces less rebound hypertension on discontinuation
(D) The toxic effects of nitroprusside are independent of dose
(E) The therapeutic effects of nitroprusside may persist on discontinuation