QT Interval Variability Index and QT Interval Duration in Different Sleep Stages: Analysis of Polysomnographic Recordings in Nonapneic Male Patients.

Biomed Res Int · 2015 · PMC4676997 · PMID 26693490

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did not reach statistical significanceno p-value reported

The differences between waking and REM sleep, as well as between REM and NREM sleep did not reach statistical significance.

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