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. Author manuscript; available in PMC: 2016 Feb 3.
Published in final edited form as: J Am Coll Cardiol. 2015 Feb 3;65(4):367–374. doi: 10.1016/j.jacc.2014.11.015

CENTRAL ILLUSTRATION. Differences in Autonomic Control of Long QT Type 1 Patients Account for Divergent Arrhythmic Risk.

CENTRAL ILLUSTRATION

Asymptomatic long QT syndrome type 1 (LQT1) patients have higher-than-normal sympathetic control of the QT interval as assessed from the power of QT variability in the low-frequency (LF) band, whereas the autonomic responses of the symptomatic LQT1 individuals and of normal controls are similar.