While tachycardia might initially seem benign, it is a serious condition that can lead to significant health issues if the underlying causes are not addressed. The potential complications of tachycardia, which can sometimes be severe, include:
* Blood clots, which can lead to stroke or heart attack.
* Heart failure, where the heart is unable to pump sufficient blood.
* Frequent fainting spells or loss of consciousness.
* Sudden death, primarily associated with ventricular tachycardia or ventricular fibrillation.