An 8-year-old child with chronic renal failure is scheduled for an operation to create an arteriovenous fistula. Laboratory studies include: Hemoglobin 6.5 g/dl, Blood gases (breathing air) : PaO2 97 mmHg, PaCO2 29 mmHg, pH 7.30 Sodium 129 mEq/L Potassium 5.5 mEq/L Chloride 101 mEq/L Bicarbonate 15 mEq/L. Before inducing general anesthesia, which of the following abnormalities should be corrected?
(A) Anemia
(B) Metabolic acidosis
(C) Potassium concentration
(D) Anemia, metabolic acidosis, and potassium concentration
After brachial plexus block via an axillary approach, a patient has sensation on the dorsum of the second and third digits and is able to extend the distal phalanx of the thumb. To block the unaffected nerve, anesthetic should be injected at which of the following sites?
(A) 2 Cm lateral to the biceps tendon at the level of the elbow
(B) At the radial border of the palmaris longus tendon
(C) Between the medial epicondyle and the olecranon
(D) Between the radial artery and the styloid process
(E) Just medial to the brachial artery at the elbow
A
To predict the requirement for isoflurane in milliliters of vapor per minute during closed circuit anesthesia, each of the following is necessary EXCEPT
A 30-kg patient with asthma is receiving general anesthesia and being mechanically ventilated with a measured tidal volume of 300 mL. Increasing the fresh gas flow from 3 L/min to 9 L/min without changing the ventilatory rate or I:E ratio will result in
A 50-year-old man is scheduled to undergo emergency craniotomy for evacuation of an epidural hematoma. His Glasgow Coma Scale score is 6; heart rate is 54 bpm, and blood pressure is 190/110 mmHg. The most appropriate initial management is administration of which of the following agents?