Sudden cardiac arrest (SCA) and sudden cardiac death (SCD) occur when the heart abruptly begins to beat in an abnormal or irregular rhythm . Without organized electrical activity in the heart muscle, there is no consistent contraction of the ventricles , which results in the heart’s inability to generate an adequate cardiac output (forward pumping of blood from heart to rest of the body
What causes SADS?
If you have a heart condition, you can experience arrhythmias (abnormal heart rhythms) which may cause a cardiac arrest.
Inherited heart conditions which may cause cardiac arrest if undetected and untreated include:
- Hypertrophic cardiomyopathy (HCM)
- Dilated cardiomyopathy (DCM)
- Arrhythmogenic right ventricular cardiomyopathy (ARVC)
- Long QT syndrome (LQTS)
- Brugada syndrome
- Catecholaminergic polymorphic ventricular tachycardia (CPVT)
- Progressive cardiac conduction defect (PCCD).
. An echocardiogram can also detect inheritable conditions such as cardiomyopathy and mitral valve prolapse.
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