“…In those settings, only the Emergency Physician may be available to decide on a treatment course, including transferring the patient to the appropriate specialist. Therefore, various serum and CSF biochemical markers have been evaluated to help elucidate the etiology and prognosis for these patients (12,13,16,26,31). In our study of critically ill patients with stroke-like symptoms and without known trauma presenting to our ED, 87% who had a structural lesion also had an elevated LDH level (Ͼ 40 IU/L).…”