Short QT syndrome diagnostic criteria
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Recent diagnostic criteria have been published out of the Arrhythmia Research Laboratory at the University of Ottawa Heart Institute from Drs. Michael H Gollob and Jason D Roberts.[1]
The Short QT Syndrome diagnostic criteria is based on a point system as follows:
- QTc in milliseconds
- <370 = 1 point
- <350 = 2 points
- <330 = 3 points
- J point - T peak interval in milliseconds
- <120 = 1 point
- Clinical History
- Sudden cardiac arrest = 2 points
- Polymorphic VT or VF = 2 points
- Unexplained syncope = 1 point
- Atrial fibrillation = 1 point
- Family History
- 1st or 2nd degree relative with SQTS = 2 points
- 1st or 2nd degree relative with sudden death = 1 point
- Sudden infant death syndrome = 1 point
- Genotype
- Genotype positive = 2 points
- Mutation of undetermined significance in a culprit gene = 1 point
The points are summed and interpreted as follows:
- > or equal to 4 points: High-probability of SQTS
- 3 Points: Intermediate probability of SQTS
- 2 points or less: Low probability of SQTS
References
- ↑ Gollob M, Redpath C, Roberts J. (2011). "The Short QT syndrome: Proposed Diagnostic Criteria". J Am Coll Cardiol. 57 (7): 802–812. doi:10.1016/j.jacc.2010.09.048. PMID 21310316.