Sudden Cardiac Arrest


Sudden Cardiac Arrest (SCA) is the abrupt loss of heart activity due to an irregular heart rhythm. The person becomes unconscious and without immediate treatment, SCA can lead to death.

Impact of Gene Variants

Genetic testing identifies a disease-causing variant in 10% of apparent SCA survivors. The majority of disease-causing variants are located in cardiomyopathy-associated genes, highlighting the arrhythmogenic potential of such variants.

Ways to Recognize Problems

Symptoms of SCA are immediate and severe and include sudden collapse, no pulse, no breathing, and loss of consciousness. Sometimes other symptoms occur before SCA, these might include chest discomfort, shortness of breath, weakness, and fast-beating, fluttering or pounding heart

Ways to Improve

Emergency treatment for SCA includes cardiopulmonary resuscitation (CPR) and shocks to the heart with a device called an automated external defibrillator (AED). Survival is possible with fast, appropriate medical care.

Did you know

There are more than 356,000 out-of-hospital cardiac arrests (OHCA) annually in the U.S., nearly 90% of them fatal.The incidence of EMS-assessed non-traumatic OHCA in people of any age is estimated to be 356,461, or nearly 1,000 people each day.



Disclaimer: The information provided here is not exhaustive by any means. Always consult your doctor or other qualified healthcare provider with any questions you may have regarding a medical condition, procedure, or treatment, whether it is a prescription medication, over-the-counter drug, vitamin, supplement, or herbal alternative.