What causes cardiac arrest?

Many things: Cardiac arrest can be caused by many problems with the heart. The most common is a heart attach which can cause fatally abnormal rhythms when the heart is starved for oxygen. Arrests can also occur from abnormalities in the electrical system of the heart; from drugs or toxins; and from abnormalities of electrolytes particularly high and low potassium.

Many things: Cardiac arrest may occur in the setting of acute myocardial infarction, profound refractory shock or electrical heart problem.

Many: Clogged arteries to the heart, pulmonary embolus, electrolye abn , congenital heart disease, drug s both legal and illegal, etc.