Question The patient is an 50-year-old female who came into the emergency room. This morning the patient  experiences symptoms for lightheadedness, dizziness and she felt like passing out. However, there was  no actual syncope. During the episode, the patient describes symptoms of palpitation and fluttering of her  chest. He relates that her heart was racing. By the time she came to the emergency room, her EKG showed  normal sinus rhythm. There was no evidence of arrythmia. The patient had some cardiac work up in the  past, and her results are as mentioned below. She denies any specific chest pain. Her activities is fairly  stable. She is actively employed. She has no other cardiac risk factors in terms of alcohol consumption or  recretional drug use, Caffeine use, and over-the-counter medication usage. She deny history of  hypertension and diabetes mellitus. She is non smoker. Her cholesterol was normal. She denies history  of establish coro...