Tachycardia - symptoms and how to test
Overly rapid heartbeat is medically known as tachycardia. What that means specifically might vary with age and health. A heart rate greater than 100 beats per minute (BPM) is considered unhealthy for adults. Sinus tachycardia can be brought on by strenuous activity, a fever, fear, stress, worry, medicines, and even illegal narcotics. Patients with cardiac disease or a history of heart attack or heart failure are also at risk. Tests can help determine the role that tachycardia plays in the onset of fainting. While lying flat on a table, the patient's heart rate and blood pressure readings are taken.