Following direct trauma to the left upper back, a 44-year-old male presents with diaphoresis and restlessness. his blood pressure is 100/50 mm hg, his pulse rate is 120 beats/min and weak, and his respirations are 24 breaths/min and labored. your assessment reveals abrasions and contusions over the left scapula. you should:

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When you have proper posture, your back is arched. a. true b. false

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