Heart and circulation·Heart and circulation
sudden heart
Informed by recognized medical guidance
Overview
A sudden heart event, often called sudden cardiac arrest, happens when the heart suddenly stops pumping blood effectively. This is an emergency because the brain and other organs do not get blood. It is different from a heart attack, which is a blockage in a blood vessel. But a heart attack can sometimes lead to sudden cardiac arrest.
Key facts
- Sudden cardiac arrest is a medical emergency that requires immediate help.
- The most common cause is a problem with the heart's electrical system.
- Immediate CPR and use of a defibrillator can save a life.
Sudden cardiac arrest is not common, but it is a leading cause of death worldwide. It can happen to anyone, even people who seem healthy.
It can affect people of any age, but it is more common in older adults and people with existing heart conditions. It can also happen to young athletes or people with inherited heart problems.