A patient is hyperventilated to a PaC02 of 20 mmHg. Which of the following physiologic parameters is most likely to be increased?
(A) Airway resistance
(B) Myocardial contractility
(C) Oxygen delivery to tissues
(D) Pulmonary vascular resistance
(E) Serum ionized calcium concentration
A
During attempted awake intubation, the patient gags when the laryngoscope presses on the base of the tongue. Which of the following cranial nerves is responsible for the afferent limb of this reflex?
The cardiac rhythm illustrated appeared suddenly in an anesthetized patient. The most appropriate management is
(A) administration of adenosine
(B) administration of digoxin
(C) administration of epinepherine
(D) overdrive pacing
(E) synchronous cardioversion
E
A 30-year-old woman develops urticaria immediately after administration of 2% 2-chloroprocaine for removal of a nevus on the chest wall. This reaction resolves with administration of diphenhydramine and the surgery is rescheduled. During the second procedure, a field block is performed using 10 ml of 1% lidocaine from a multidose vial. Within 10 minutes the patient develops urticaria and wheezing and has difficulty breathing. These symptoms resolve with administration of epinephrine. Which of the following substances is the most likely cause of these reactions?
(A) A paraben derivative
(B) Povidone-iodine
(C) Ethylenediaminetetraacetic acid (EDTA)
(D) Propylene glycol
(E) Sodium bisulfite
A
Which of the following is the most appropriate drug to treat hypotension in patients with asymmetric septal hypertrophy (IHSS)?