If your loved one is having a heart attack you really need to do something fast about it.
First off, do not procrastinate on the golden hour. Just do the obvious to save life.
Some symptoms to recognize a heart attack include...
Shortness of breath.
Light headedness.
Breaking out in a cold sweat.
Nausea and common symptoms.
Triggers of a heart attack...
Intense physical and mental stress.
Emotional trauma or obviously continuous emotional charge moment.
Over-feeding or simply big meals especially when the heart needs more oxygen nutrient.
Physical exertion.
During angina pectoris (the pain felt during an heart attack) you need to call 911 and while waiting, keep your loved one calm and stay calmed as well.
Even if you can't control it from the inside, mask calmness, confidence and assurance that all would be fine, as your first aid.
Ask the person having a heart attack whether he or she has take some pills and if yes, whether they are allergic.
While waiting for ambulance, when the person seems to find it more difficult to breath or stops breathing, start mouth-to-mouth resuscitation immediately.
And in the other hand, if there pulse stops, just start CPR calmly. This is the most simple help and what to do when someone is having a heart attack.
The recover position is any favourable relaxation posture.