A patient with moderate hypothyroidism and unstable angina requires urgent coronary artery bypass grafting. Which of the following is most appropriate before proceeding with the operation?
(A) Initiation of epinephrine infusion
(B) Intramuscular administration of a barbiturate
(C) Intravenous administration of triiodothyronine (T3)
A patient becomes flushed, dyspneic, and hypotensive during transfusion of 1 unit of packed red blood cells in the PACU. After discontinuing the transfusion, the most appropriate next step is administration of
A 67-year-old man is undergoing total hip replacement under general anesthesia. He had a permanent endocardial VVI pacemaker placed two years ago for complete heart block, and since arrival in the operating room has been paced continuously. Use of the electrocautery causes the pacemaker to malfunction intermittently. The most appropriate management is to
(A) tape a magnet over the pacemaker generator and convert to asynchronous mode
(B) do nothing since the pacemaker is programmed to deal with this circumstance
(C) stop the surgeon from using the electrocautery
(D) limit the surgeon to 10 sec/min electrocautery bursts
(E) place the electrocautery indifferent lead as close as possible to the pacemaker
A 75-kg, 45-year-old patient with quadriplegia at the level of C6 is scheduled for elective cholecystectomy. Pulmonary function tests show an FVC of 2.4 L and an FEV, of 1.2 L. Which of the following is the most appropriate conclusion based on these findings?
(A) Intercostal muscle function is normal
(B) SpO, will be 80% or less while breathing room air
(C) Total lung capacity is normal
(D) The patient has chronic obstructive pulmonary disease
A 64-year-old man with diabetes mellitus well controlled with NPH insulin undergoes lower extremity revascularization. Following administration of protamine 10 mg, the patient has facial flushing and blood pressure of 60/30 mmHg. The most appropriate initial step in management is administration of which of the following drugs?