tachnachardia

A way undereducated people mean to spell "tachycardia", which is any faster than normal heart rhythm. Tachy= Fast like
tachometer, a rather stuck-up way of saying speedometer. Cardia= Heart Ex: Cardio workout,cardio-etc, etc, etc.

Not tachnachardia, t-a-c-h-y-c-a-r-d-i-a. As in..... sinus tachycardia, experienced after exercise. Ventricular tachycardia, a lethal rhythm that can occur in a heart attack (this is how you spell it, by the way). And about 10 others if you don't have a life like me, and look up useless garbage like this.