Heart arrests refer to a medical condition where the heart suddenly stops beating. It can be caused by several factors such as heart disease, heart attack, and other underlying health conditions. Some synonyms for this condition include cardiac arrest, sudden cardiac arrest, and heart failure. Cardiac arrest occurs when the heart's electrical system malfunctions, resulting in an abnormal heart rhythm that can be life-threatening. Sudden cardiac arrest often happens without any warning signs, and prompt medical attention is crucial to increase the chances of survival. Heart failure refers to a gradual weakening of the heart muscle that can lead to long-term complications if left untreated.