Key result
Prior syncope within 5 years is linked to ~29% higher risk of sudden cardiac arrest.
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Syncope history signals elevated sudden cardiac arrest risk; leaves open its added value for stratification beyond known factors.
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Dong‐Hyeok Kim (2026) conducted an editorial in Syncope. History of syncope within the preceding 5 years vs. No history of syncope was evaluated on Sudden cardiac arrest (SCA) (HR 1.29). History of syncope within the preceding 5 years was associated with an increased risk of subsequent sudden cardiac arrest after multivariable adjustment (HR 1.29; 0.96 vs. 0.50 per 1,000 person-years).
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