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10491 Surgery

A 9-mo-old boy is brought to the emergency room in a limp and unresponsive state. Initial examination shows a pulse rate of 35/min and occasional irregular breaths. After initiation of CPR (including tracheal intubation), delivery of oxygen positive-pressure breaths, and chest compressions, multiple attempts to inse an IV line fail. The most appropriate next step in management should be to:

AObtain an aerial blood gas sample
BPlace an intraosseous needle and administer fluids andinotropic agents
CObtain a "stat" head CT study to evaluate reasons for unresponsiveness
DPlace a transthoracic cardiac pacemaker
Surgery
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