Heart arrest which is also known as circulatory arrest is different from heart attack. It is the cessation of normal circulation of the blood due to failure of the heart to contract effectively. While Heart attack is the interruption of blood supply to a part of the heart, causing heart cells to die. Heart arrest is already common nowadays even young children have already experiencing this illness.
If there is heart arrest in your household – avoid panicking. Calm down and relax. The first thing what you would do is (1) Call or summon a medical person/officer as soon as possible in every case, (2) Feel pulse of the person, listen for heartbeat with ear against chest, (3) If no heartbeat is heard, start Heart-Lung Resuscitation.
Read more on Heart-Lung Resuscitation