What are the causes of tachycardia and its types?

The reason for the irregular beats  the heart ? When abnormal electrical impulses occur in the heart, the resulting normal beats are not regulated, and this is what worries many sufferers. This pulse is either light or very fast, and the irregular heartbeat is uncommon and can cause a blood clot, or a heart attack in the person who suffers from it. This irregularity is more dangerous for people who suffer from heart failure or disease, and there are several symptoms that the person with tachycardia suffers from, including: the person with dizziness and lightheadedness, and difficulty breathing.
There are two main types of arrhythmias:
• Very fast heartbeat.
• Very slow heartbeat.
* Causes of injury:
The causes of injury vary for each patient individually, and this depends on the person’s style and lifestyle, whether the beats are fast or slow, as well as due to the person’s health history and environment, but there are several general causes of tachycardia:
The presence of congenital defects, or heart defects, such as: heart diseases that appear with the life of the newborn, and there are diseases that affect heart valves, swelling of the heart, lack of the heart’s blood supply required and coronary artery disease.
Some physical diseases that affect the efficiency of the heart and its ability to function well, such as high blood pressure, increased cholesterol in the blood, diabetes, thyroid disorder, and salt imbalance in the body.
There are medicines that affect the heart, especially medicines that include stimulants, as well as caffeinated drinks, and carbonated drinks.