A variety of factors such as cardiogenic factors, respiratory arrest, and electrolyte imbalance can lead to cardiac arrest. 1. Cardiogenic factors Coronary atherosclerotic heart disease, infectious or non-infectious myocarditis, aortic stenosis, aortic aneurysm, heart valve damage and other heart diseases can lead to heart pump failure and arrhythmia, causing cardiac arrest. 2. Non-cardiac factors Airway foreign body, asphyxia, large pulmonary infarction, etc. will lead to respiratory arrest and gas exchange interruption, which will lead to severe hypoxia of myocardial tissues and systemic organs and tissues, causing cardiac arrest. Severe hypokalemia, hyperkalemia, acidosis, etc. can cause severe cardiac arrhythmia and cause cardiac arrest. Electrical shock injuries can lead to respiratory and cardiac arrest and are associated with damage to the vital centers from an electric current passing through the head or an electric current passing through the heart. There are many factors that can cause cardiac arrest, and in the event of cardiac arrest, it is recommended to perform CPR immediately while calling emergency services and waiting for help.