Need expert help here. what are the symptoms of sudden cardiac arrest?

Heart stops...: In a cardiac arrest, the heart stops beating so the person would become unconscious and not have a pulse. If cpr, or cardiopulmonary resuscitation, is not immediately done, the person may die. Performing CPR and calling 911 may be life-saving. If interested, you can learn CPR by taking classes so check for a class near you!

Sudden Death: I am not trying to be sarcastic, at all. But, "sudden cardiac arrest" is just that: a sudden stop of the heart, and - if not treated right away - will uniformly lead to death. Perhaps someone might feel a little funny beforehand, but it is very sudden and fatal if not treated. Hope this helps...