Sudden Cardiac Arrest

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Sudden Cardiac Arrest

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Why Does Cardiac Arrest Often Strike in the Morning?

For decades scientists have known that sudden cardiac death–a failure in the heart’s electrical system that leads people to, well, suddenly drop dead–occurs more often in the morning hours. Analysis of data from the ambitious Framingham Heart Study led to the scientific documentation of the curious link as early as 1987. But for just as long, scientists haven’t been able to do much with that knowledge. A flurry of papers in the late 1980s pointed to possible explanations: the assumption of an upright posture, for example, or problems with the process that typically prevents blood clots. Still, scientists have been unable to pin down a basic mechanism to explain the connection between the body’s…

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 Why Does Cardiac Arrest Often Strike in the Morning?

Studies show that the amount of a specific molecule in human hearts fluctuates on a daily cycle, helping to explain the decades-old observation.

7 Things You Should Know About Sudden Cardiac Arrest

Unfortunately, only one-third of SCA victims receives CPR from bystanders and fewer than five percent are treated with automated external defibrillators (AEDs) before EMS arrives at the scene.

96 Minutes Without a Heartbeat

The capnograph, which measures carbon dioxide being expelled from the mouth of the patient, can tell rescuers when further efforts at cardiopulmonary resuscitation, or CPR, are futile or whether they should be continued. It is the latest effort that cardiology experts and emergency teams are devising that aim to improve a patient's odds.

SADS Foundation

To save the lives and support the families of children and young adults who are genetically predisposed to sudden death due to heart rhythm abnormalities.


SADS UK - The Ashley Jolly SAD Trust, is a charity that helps to prevent premature loss of life and to improve the lives of those adversely affected by cardiac arrhythmia.

Sudden Cardiac Arrest Foundation

Sudden cardiac arrest (SCA) is a leading cause of death among adults over the age of 40 in the United States and other countries. In the United States alone, approximately 250,000 people die every year from SCA, according to the Centers for Disease Control and Prevention.

Sudden Cardiac Arrest UK

Peer support for those affected by this life changing event.


WYP is a global campaign aimed at increasing public awareness about how PADs (Public Access Defibrillation sites), which contain an AED (Automatic External Defibrillator) can make a difference in the survival rate of Sudden Cardiac Arrest (SCA).

Cardiac Risk in the Young

CRY is a charity to raise awareness of Cardiac Risk in the Young - Sudden Cardiac Death (SCD), Sudden Death Syndrome (SDS, SADS). CRY offers support to those who have suffered a loss through a network of affected families & counselling.

Eric Paredes Save a Life Foundation

Student athletes are at a greater risk for Sudden Cardiac Arrest (SCA) because it is 60% more likely to occur during exercise or physical activity. Educating student athletes and parents about the symptoms and risk factors of SCA is one way to help prevent it.

Heart for Athletes

Heart for Athletes has chosen to focus on the most at-risk group. Athletes are up to 3 times more likely than their non-athletic counterparts to suffer from SCA. As the intensity of their training increases, so does their risk of SCA. An athlete with an undetected heart condition may have a 100-fold risk of suffering from SCA.

HeartRescue Project

Initiated and funded by the Medtronic Foundation, the HeartRescue project is designed to improve how SCA is recognized, treated and measured around the world.

Parent Heart Watch

Parent Heart Watch is the national voice solely dedicated to protecting youth from Sudden Cardiac Arrest (SCA) and preventable Sudden Cardiac Death (SCD). Parent Heart Watch leads and empowers others by sharing information, educating and advocating for change.


PulsePoint is a 501(c)(3) non-profit foundation based in the San Francisco Bay Area. Our mission is to make it much easier for citizens who are trained in CPR to use their life saving skills to do just that…save lives! Through the use of modern, location-aware mobile devices PulsePoint is building applications that work with local public safety agencies to improve communications with citizens and empower them to help reduce the millions of annual deaths from Sudden Cardiac Arrest.

Resuscitation medicine education.

Simon's Heart

Every organization has a story. Ours is no different. It involves a seemingly healthy baby boy named Simon who died in his sleep from an undetected and treatable heart condition. We always thought that sudden cardiac arrest was an adult thing. His death inspired us raise awareness about sudden cardiac arrest and death. Through a variety of strategic initiatives, we pursue this mission.

The Cormac Trust

Raising Awareness of Sudden Cardiac Arrest.

American Heart Association

While it's estimated that more than 95 percent of cardiac arrest victims die before reaching the hospital, death from sudden cardiac arrest is not inevitable. Survivors of sudden cardiac arrest may face a variety of complex medical issues known as Post-Cardiac Arrest Syndrome (PCAS)

National Heart Lung and Blood Institute

SCA is not the same as a heart attack. A heart attack occurs if blood flow to part of the heart muscle is blocked. During a heart attack, the heart usually doesn't suddenly stop beating. SCA, however, may happen after or during recovery from a heart attack.

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