My friend is in the late stages of heart failure and has started having blackouts where he stops breathing and goes stiff and after a minute or so comes back out of it.  This seams to happen when he is drinking or eating and has a cough at the same time, what is causing this.  He is 69 and is permanently on oxygen and cant get about by himself.  He is very scared of these blackouts
Helots is probably from his heart stopping to beat properly for a time and his blood pressure Chat Doctor. Or it might be minor seizures. His doctor needs to know about this.