Tachycardia

This condition is caused by an "alteration of the electrical impulses that control the pumping action of the heart and is part of tachyarrhythmias (disturbances in the electrical conduction of the heart), which are distinguished according to the site from which the impulse starts. For example. In sinus tachycardia, the most common and least dangerous form, the contraction of the heart is regular, but faster, physiologically dictated by the sinoatrial node.

The key to diagnosis is an electrocardiogram (ECG), which records the heart's electrical impulses and their conduction. Treatment is directed at the specific cause of the tachycardia.