Mr. jenson is a 27-year-old male with a personal and family history of schizophrenia. he arrives at the clinic today with his mother, who is concerned about his behavior. mr. jenson has a disheveled appearance, paces constantly, and chain-smokes. when you ask him to enter the exam room, he accuses you of being a spy who wants to mistreat him. what best describes the behavior mr. jenson is displaying?

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