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Which of the following is consistent with the expected initial Swan-Ganz catheter readings b. Peripheral vascular resistance 1660 dynes c. Pulmonary artery pressure 50 20 mm Hg d. Pulmonary capillary wedge pressure 16 mm Hg e. Central venous pressure 18 mm Hg 66. Which of the following is consistent with the expected initial Swan-Ganz catheter readings b. Peripheral vascular resistance 1660 dynes c. Pulmonary artery pressure 50 20 mm Hg d. Pulmonary capillary wedge pressure 16 mm Hg e....

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The answer is a. (Schwartz, 7 e, pp 65-66.) States of magnesium excess are characterized by generalized neuromuscular depression. Clinically, severe hypermagnesemia is rarely seen except in those patients with advanced renal failure treated with magnesium-containing antacids. Hypermagnesemia is produced intentionally, however, by obstetricians who use parenteral magnesium sulfate (MgSO4) to treat preeclampsia. MgSO4 is administered until depression of the deep tendon reflexes is observed, a...

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An in-hospital workup of a 78-year-old, hypertensive, mildly asthmatic man who is receiving chemotherapy for colon cancer reveals symptomatic gallstones. Preoperative laboratory results are notable for a hematocrit of 24 and a urinalysis with 18-25 WBCs and gram-negative bacteria. On call to the operating room he receives intravenous penicillin. His abdomen is shaved in the operating room. An open cholecystectomy is performed and, despite a lack of indications, the common bile duct is explored....

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DIRECTIONS Each item below contains a question or incomplete statement followed by suggested responses. Select the one best response to each question. 132. A teenage boy falls from his bicycle and is run over by a truck. On arrival in the emergency room, he is awake and alert and appears frightened but in no distress. The chest radiograph suggests an air-fluid level in the left lower lung field and the nasogastric tube seems to coil upward into the left chest. The next best step in management...

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The answer is a. (Sabiston, 15 e, pp 1479-1485.) The ulnar nerve innervates 15 of the 20 intrinsic muscles of the hand. The musculocuta-neous, radial, ulnar, and median nerves are all important to hand function. The musculocutaneous and radial nerves allow forearm supination the radial nerve alone innervates the extensor muscles. The median nerve is the eye of the hand because of its extensive contribution to sensory perception it also maintains most of the long flexors, the pronators of...