A 26-year-old woman has persistent uterine bleeding following a normal spontaneous delivery without anesthesia. The uterus is firm on manual examination. Which of the following anesthetics is most appropriate for manual extraction of the placenta?
(A) Halothane
(B) Pudendal block with lidocaine
(C) Subarachnoid tetracaine
(D) Thiopental
(E) Vecuronium
A
An isoflurane-specific vaporizer that is 25% full is mistakenly refilled with halothane, and the dial is set at 1.5%. Which of the following statements concerning this situation is true?
(A) The gas mixture will contain equal partial pressures of halothane and isoflurane
(B) The gas mixture will produce a greater depth of anesthesia than 1.5% isoflurane alone
(C) The gas mixture will produce a greater depth of anesthesia than 1.5% halothane alone
(D) The liquid mixture will have a higher vapor pressure than 1.5% halothane alone
(E) The liquid mixture will have a higher vapor pressure if it is placed in a halothane-specific vaporizer
A 72-year-old woman is somnolent one day after left carotid endarterectomy. She has smoked 2 packs of cigarettes daily for 50 years. Six weeks ago, she underwent right carotid endarterectomy. At this time, arterial blood gases while breathing room air are PO2, 45 mmHg, PCO2, 60 mmHg, and pH 7.30. Which of the following is the most likely cause of the increased PCO2?
A programmable DVI pacemaker can be inhibited or inactivated by each of the following EXCEPT
(A) myopotentials from shivering
(B) succinylcholine-induced fasciculations
(C) the ventricular R wave
(D) the atrial P wave
(E) placement of a magnet over it
D
During an inguinal hernia repair, a newborn infant will have a larger fluid requirement (in milliliters per kilogram) than an adult because of relatively greater
During open reduction of a tibial fracture, a tourniquet cuff is applied around the proximal thigh and inflated to 300 mmHg. Which of the following is most likely to prevent pain and hypertension caused by the tourniquet?
(A) Intravenous administration of fentanyl during subarachnoid block