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126739 Surgery

An 86 yr old male complains of cough and blood in his sputum for the past two days. On admission, his temperature is 103deg F. physical examination reveals rales in his right lung, and x- ray examination shows increased density in the right middle lobe. A sputum smear shows many Gram positive coci, confirmed by sputum culture as penicillinase producing staphylococcus aureus. Which of the following agents should be given?

AAmpicillin
BOxacillin
CCarbenicillin
DTicarcillin
Surgery
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126745 Medicine

A previously healthy 18-year-old high school student suddenly develops left-sided pleuritic chest pain and dyspnea while at the senior prom. In the emergency room examination reveals BP=110/60 mm Hg, P=110 beats/min, respiratory rate=36 breaths/min, T=37degC (98degF). There are hyperresonance to percussion, decreased tactile fremitus, and absent breath sounds over the left chest anteriorly. Chest x-ray is as shown.What is the most likely etiology of this patient’s condition?

AInfection of the lung parenchyma
BMalignant neoplasm of the pleura
CRib fracture
DRupture of a subpleural apical bleb
Medicine
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