Identify the shortest text spans which correspond to tests, treatments, and problems in the text below and return a JSON format response with tests, treatments, and problems as keys .
Plavix was started at 75 mg a day, metoprolol 25 mg twice a day to be titrated up as tolerated and on day two of admission an ACE inhibitor was started . The patient had an echocardiogram on day two of admission , which revealed a mildly dilated left atrium , mild symmetric LVH , normal LV cavity size , mild region LV systolic dysfunction , arresting regional wall motion abnormality including focal apical hypokinesis . For renal , his creatinine was monitored and the dye load and the catheterization . For hematology , the patient 's hematocrit and platelets were monitored after the catheterization. Please reply with exactly 3 paragraphs and separate each paragraph with two new lines. The very first paragraph must start with the word "identity".
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