Respuesta :

in tachycardia the hearts beats too quickly more them 100 beats per minute and bradycardia the hearth beats to slowly less them 60 beats per minute '

Dontthankmebrainme
hi, 

Bradycardia is abnormally slow heart action. with can turn into a heart attack and even kill you!

Tachycardia is an abnormally rapid heart rate. witch you would have even a greater chance of you heart stopping and give you a heart attack and can kill you!