I am a nurse specialized in cardiovascular nursing.
You wrote "Cardiac arrest occurs when there is no blood flow in the body system which results in the heart to stop pumping blood".
Your definition is totally wrong. It is not when there is no blood flow in the body system that cause the arrest, yet it is because no blood flow to the heart muscle due to blockage or obstruction of coronary arteries. Please research and read profoundly before conclude a definition.
Link Link Link Link to get better insight on the difference between them.Hello @alzamna, I believe you are totally wrong. You are clearly defining Heart attack. Please read
NOTE I do my research well before I post anything online, so therefore I believe you should apologize on the wrong comments you made.