Tachycardia is a when a person’s heart beats too fast when resting (over 100 beats per minute). This has serious consequences. When a person has tachycardia, their heart is working too hard. This heart requires more oxygen thus taking the needed oxygen from other bodily systems. This heart, even though it is using up most of the body’s oxygen, is inefficient. A heart suffering from tachycardia is unable to pump enough blood to the rest of the body.
The most common cause of tachycardia is often an underlying heart condition. Many times, tachycardia results after a heart attack, medicine, or surgery. During a heart attack or surgery, scar tissue develops that blocks the heart valves thus making the heart work harder. Stimulants (especially amphetamines) or medicines that affect your body’s hormones may lead to the development of tachycardia as well.
The main symptom of tachycardia is a feeling of a quickly or irregular beating heart (palpitations). Other symptoms include dizziness, fainting, chest pain, fatigue, or worsened ability to breathe. The severity of the symptoms depends on the seriousness of the disorder.