Which of the following is the most likely effect of intramuscular ketamine used for induction of anesthesia in a 2-year-old child undergoing elective surgery?
A patient with a fasting blood glucose concentration of 100 mg/dL undergoes a four-hour operation under general anesthesia without intraoperative administration of glucose. On emergence the most likely finding will be
Which of the following is characteristic of low back pain associated with myofascial pain syndrome but not of pain associated with a herniated lumbar disk?
(A) Loss of reflexes in the lower extremities
(B) Pain along the distribution of nerve roots
(C) Responsiveness to epidural corticosteroids
(D) Sensitivity to injection at trigger points
(E) Trophic alteration in the sympathetic nervous system
Which of the following drugs used to produce or reverse muscle relaxation has the greatest prolongation of action in a patient with end-stage renal disease?
(A) Atracurium
(B) Neostigmine
(C) Pancuronium
(D) Succinylcholine
(E) Vecuronium
B
During craniotomy in the sitting position, end-tidal carbon dioxide tension suddenly decreases. Ventilatory excursion of the chest is normal. Further evaluation is most likely to show a decrease in
After inserting a left-sided double-lumen endotracheal tube, both cuffs are inflated. When the right (tracheal) lumen is clamped, breath sounds are heard only in the lower right lung field. When the left (bronchial) lumen is clamped, breath sounds are heard over the entire left lung field. Where is the tube positioned?
(A) Tracheal orifice above the carina and bronchial limb in the right bronchus
(B) Tracheal orifice above the carina and bronchial limb in the left bronchus
(C) Tracheal orifice and bronchial limb both above the carina
(D) Tracheal cuff and bronchial limb both in the right bronchus
(E) Tracheal orifice and bronchial limb both in the left bronchus
A
The principal rationale for the use of warmed humidified inspired anesthetic gases in children is to