Sudden Unexplained Death - Treating the Family.

Area of Science:

• Cardiology
• Genetics
• Forensic Pathology

Background:

• Sudden unexplained death with a normal post-mortem heart and toxicology is Sudden Arrhythmic Death Syndrome (SADS).
• SADS is frequently linked to inherited cardiac conditions, especially channelopathies.
• Family screening of SADS victims often identifies affected individuals in up to 50% of cases.

Purpose of the Study:

• To outline the diagnostic approach for Sudden Arrhythmic Death Syndrome (SADS).
• To emphasize the importance of expert cardiac autopsy and molecular autopsy in SADS diagnosis.
• To detail the clinical evaluation and management strategies for families affected by SADS.

Main Methods:

• Expert cardiac autopsy to ensure diagnostic accuracy.
• 'Molecular autopsy' involving post-mortem genetic testing.
• Clinical assessment including ECG, echocardiogram, exercise testing, and provocation tests (sodium channel blocker, epinephrine).

Main Results:

• Expert autopsy improves diagnostic accuracy in SADS cases.
• Molecular autopsy can provide a genetic diagnosis in up to one-third of SADS cases.
• Family screening reveals affected individuals in a significant proportion of SADS victims.

Conclusions:

• A systematic approach combining autopsy, genetic testing, and clinical evaluation is essential for SADS.
• Early diagnosis and management of SADS families, guided by established protocols, can prevent further deaths.
• Negative investigations may allow patient discharge, with exceptions for young or symptomatic individuals.