When is Ventricular Tachycardia considered pulseless ventricular tachycardia? I have seen videos with, for example, 220 bpm vtach with a pulse, and i have seen videos with 140 bpm pulseless vtach. i thought it depends on how fast the vtach is (faster rhythm->less cardiac output)? and why do you need to sync the vtach when converting if you can defibrilliate it like vfib if it is pulseless? you sedate the patient anyways. sorry if all of this sounds stupid, im only 16 and i have been studying all of this by myself