Amother has brought her 5-month-old son to the clinic because he has been drowsy and unresponsive. the child has hydrocephalus and had a shunt placed about a month previously. which of the following symptoms indicate that the shunt is infected?

the child has a high-pitched cry.
the fontanels are bulging or tense.
the child is not responding or eating well.
the child's pupil reaction time is rapid and uneven.

A62-year-old man is being treated for an acute myocardial infarction. he originally came to the ed with substernal chest pain and diaphoresis. given his risk factors of hypertension, diabetes, tobacco use, and family history, he is considered high risk. an ecg in the ed reveals a left-bundle branch pattern, and cardiac enzymes are elevated slightly. after a focused evaluation in the ed, the patient receives iv thrombolytics. although his bundle branch pattern never resolves, the patient is chest pain-free and haemodynamically stable after thrombolysis. two days later, however, the patient reports episodes of recurrent chest discomfort and shortness of breath overnight. in evaluating for potential myocardial reinfarction, which of the following is the most appropriate diagnostic test? - creatinine kinase- dynamic ecg changes- lactate dehydrogenase- myoglobin levels- troponin i level