In the human body heart plays an important and vital role that tells the correct problem of the body. In the heart there is an internal electrical system that tells that how the heart beat is working. If this is not working properly then it causes to the problem known as the arrhythmias. Arrhythmia has got many types that makes many helpful about the working of the heart beat. Sometimes the heart beat reacts very differently like very fast, slow and sometimes it will not beat. The cardiac arrest will come if the heart beat will stop beating suddenly and this is not a heart attack that blocks the arrest. Due to this problem there are many side defects like heart attack, coronary heart disease, drowning and choking, Mainly this problem is cured by taking medical attention at right time. If the medical attention is not done means then the person will die immediately. This problem is sometimes cured by giving the electric shock to the person that is used to restore the heart to a normal condition.