A patient is scheduled for amputation of the third metatarsal. A tourniquet will not be used during the procedure. The most effective anesthesia will be provided by block of which of the following nerves?
During general anesthesia, a patient has the acute onset of atrial fibrillation with rapid ventricular response and hypotension to 50 mmHg systolic. The most appropriate treatment is
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 60-kg, 38-year-old woman undergoes laparoscopic tubal ligation. Paralysis is maintained for one hour with infusion of succinylcholine at a rate of 10 mg/min. At the end of the procedure, respirations are shallow and tetanic fade is noted on neuromuscular stimulation. In addition to continued mechanical ventilation, which of the following is the most appropriate next step in management?
Following extubation after nasotracheal intubation for seven days, a 35-year-old man has fever, facial pain, nasal stuffiness, and purulent nasal secretions. The most likely cause is
At term which of the following would produce the greatest increase in uterine blood flow?
A patient undergoes thoracotomy in the lateral decubitus position. Which of the following maneuvers is most likely to increase PaO2 during one-lung ventilation?
High positive end-expiratory pressure can result in each of the following EXCEPT
Following antagonism of a nondepolarizing muscle relaxant with neostigmine, twitch height is normal. To achieve this effect, the percentage of the acetylcholine receptor pool that must be free of muscle relaxant is
A patient who is scheduled for emergency debridement of an infected wound on the sole has trismus, rigidity of facial muscles, and spasms of the intercostal muscles, diaphragm, and extremities. During anesthesia, this patient is at increased risk for each of the following EXCEPT