Do you have a of a bit better description of the syncopal event? Did the patient suddenly lose consciousness, did she lose consciousness shortly after racking a bar after heavy squats, slowly become more and more lightheaded throughout her workout, and so on? Did she have any preceding dizziness, tachycardia/palpitations, chest pain, et cetera? Does she take any supplements or is on any specific diet? Does she present risk factors for hypercoaguable state (birth control, chance of pregnancy, smoking, hormonal supplements, long periods of inactivity)? How much fluid has she taken in during the workout, how much today? Does the patient appear clinically hydrated and/or well perfused. How many times has she urinated today, when was her last urination, what color was it? Does the patient present any focal neurological deficits or only a series of vague symptoms? Diet concerning for anemia? Other general history and physical exam?
EMS: 12 lead. BGL. NIHSS, cerebellar assessment. Serial vitals. Access. Replacement fluids if indicated. Transport depending on clinical assessment.
ED add: CBC, CMP, trop, preg, dimer. Consider CXR or CT. Consider tox. Disposition depending on clinical course.