Would a clear ecg no family history 25 f suffer aniexty rule out sudden cardiac arrest?

Get regular check up: Medical checks done once yearly and adopting a healthy life style will keep you healthy. This means, eating healthy(plant based diet, reduce fats in the diet and maintain healthy weight) and exercise regularly(a daily walk is the best preventive medicine that you can take/do to avoid heart disease. ECG/EKG is a reasonable screen but tells us very little about the condition of your heart.