Also known as Pulse too fast, Rapid heartbeat, Heart is racing, and Tachycardia
Tachycardia is a heart rate that exceeds the normal range. A resting heart rate over 100 beats per minute is generally accepted as tachycardia. Tachycardia can be caused by various factors which often are benign. However, tachycardia can be dangerous depending on the speed and type of rhythm. Note that if it is pathological, a tachycardia is more correctly defined as a tachyarrhythmia.Source: Wikipedia
The most common causes of increased heart rate are atrial fibrillation, sinus bradycardia, and high blood pressure. Other possible causes, such as pneumonia, are more rare.
Within all the people who go to their doctor with increased heart rate, 50% report having shortness of breath, 49% report having sharp chest pain, and 41% report having dizziness.
Patients with increased heart rate often receive electrocardiogram, hematologic tests, complete blood count, radiographic imaging procedure, plain x-ray, cardiac enzymes measurement, kidney function tests and intravenous fluid replacement .
The most commonly prescribed drugs for patients with increased heart rate include diltiazem, adenosine, flecainide, fondaparinux (arixtra), propafenone, carbon dioxide, procainamide, chlorpheniramine/pe/ppa/phenyltoloxamine, beclomethasone (qvar), etomidate, aliskiren / valsartan, esmolol and hydralazine / hydrochlorothiazide .
Groups of people at highest risk for increased heart rate include age 75+ years age 60-74 years.