question: Good evening I have question. Regarding 42 y/o female previously healthy presented with history of chest pain pin prick in nature mainly with deep breathing she gave history of URTI  4 days back for which she received klaccid and ibuprofen on examination she was tachycardic pulse 127/ min regular afebrile chest clear and heart s1s2 normal no murmur ECG sinus tachycardia WBC 4.9 kidney profile normal troponin was slightly elevated 0.4 then repeated 0.33 after one day troponin repeated and still high 0.33 D-dimer was 173 so what would explain her persistently high troponin level??? Although pul.embolism renal failure septicemia all are excluded