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Diagnostic criteria for Long QT syndrome (LQTS) the Schwartz score

Diagnostic criteria for Long QT syndrome (LQTS) the Schwartz score

QTc
4-min recovery QTc after exercise test ≥ 480 ms
Torsades de pointes
T-wave alternans
Notched T wave in 3 leads
Low heart rate for age
Syncope
Congenital deafness
Family members with definite LQTS
Unexplained sudden cardiac death <age 30 among immediate family members

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References

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1) Wilde AAM, Amin AS, Postema PG Diagnosis, management and therapeutic strategies for congenital long QT syndrome

Heart 2022;108:332-338.

 

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