Sudden Cardiac Death (Family Screening)
Losing a loved one to sudden cardiac death is devastating. When it happens unexpectedly, especially in younger people, it often raises more questions than answers. Could it have been prevented? Is the rest of the family at risk? Family screening for sudden cardiac death helps identify genetic heart conditions that may cause life-threatening arrhythmias. If it is detected early, this can help protect those who may be at risk.
What is sudden cardiac death?
Sudden cardiac death (SCD) happens when the heart suddenly stops beating because of an electrical malfunction. It often happens without warning, even in people who seem healthy. The most common cause is a life-threatening arrhythmia, where the heart beats too fast or irregularly, preventing proper blood flow.
In some cases, SCD is linked to inherited heart conditions that run in families. These may include:
- Long QT Syndrome (LQTS): A condition that affects the heart’s electrical system, increasing the risk of dangerous arrhythmias.
- Brugada Syndrome: A genetic disorder that causes sudden, fatal heart rhythms, especially during sleep.
- Hypertrophic Cardiomyopathy (HCM): A thickening of the heart muscle that can lead to arrhythmias.
- Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT): A rare condition that causes arrhythmias during physical activity and stress.
If a family member has passed away suddenly or been diagnosed with one of these conditions, screening can help see who else may be at risk.
Who should consider family screening?
Family screening is recommended for direct relatives of someone who has suffered sudden cardiac death or individuals with a family history of unexplained fainting, seizures, or cardiac arrests. In addition, families with known genetic heart conditions, athletes, or individuals experiencing irregular heart rhythms during exercise also exist. If a condition is found early, steps can be taken to manage the risk and prevent life-threatening events.
What does screening involve?
Screening for inherited heart conditions is simple and non-invasive. It may include:
- Electrocardiogram (ECG): This medical test measures the heart’s electrical activity to find abnormal rhythms.
- Echocardiogram: An ultrasound scan is used to assess heart structure and function.
- Holter monitoring: Tracks heart rhythms over 24 hours or longer.
- Genetic testing: Identifies mutations linked to inherited arrhythmias.
The results can help us find the best treatment option, whether that means ongoing monitoring, medication, or lifestyle adjustments.
What can be done if someone is at risk?
If screening identifies a potential issue, steps can be followed to reduce the risk of sudden cardiac events. Medication can be provided to help regulate heart rhythm. In addition, avoiding certain triggers, such as intense exercise or specific medications, can reduce risk. Sometimes, an implantable cardioverter-defibrillator (ICD) may be recommended to detect and correct dangerous heart rhythms.
Take action for your family’s heart health
If sudden cardiac death has affected your family, do not wait for symptoms to appear. Detecting issues early can help prevent life-threatening events and provide you with peace of mind.
If your family member has concerns about heart health, book a consultation with Dr Mtwesi today to discuss your options.
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Netcare Alberton Hospital, 1 Netcare
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011 742 3598