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Self-Reported Sleep Quality and Circadian Rest-Activity Patterns in Patients With Cardiac Implantable Electronic

Ayami Ogishi1, Chieko Tan2, Nao Saito3

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Patients with cardiac implantable electronic devices (CIEDs) who have poor sleep quality often exhibit altered circadian rest-activity patterns. Improving daily activity and adjusting peak activity time may enhance sleep in these patients.

Keywords:
Cardiovascular implantable electric deviceCircadian rest-activity patternImplantable cardioverter defibrillatorPhysical activitySleep quality

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Area of Science:

  • Cardiology
  • Sleep Medicine
  • Chronobiology

Background:

  • Poor sleep quality is a significant concern for patients with cardiac implantable electronic devices (CIEDs).
  • Understanding the link between sleep and circadian rhythms is crucial for managing patient well-being.

Purpose of the Study:

  • To investigate the relationship between sleep quality and circadian rest-activity patterns in Japanese patients with CIEDs.
  • To identify specific circadian parameters associated with poor sleep in this population.

Main Methods:

  • Fifty-four CIED patients assessed sleep quality using the Pittsburgh Sleep Quality Index.
  • Activity levels tracked for 3 days using wristbands, analyzed for circadian parameters (mesor, amplitude, acrophase).
  • Statistical analyses included Mann-Whitney U test and logistic regression.

Main Results:

  • Patients with poor sleep quality showed significantly lower mean activity (mesor), reduced activity range (amplitude), and later peak activity time (acrophase).
  • Acrophase time was independently associated with self-reported sleep quality.
  • No other significant differences in sleep metrics were found between groups.

Conclusions:

  • Circadian rest-activity patterns, particularly acrophase timing, are linked to sleep quality in CIED patients.
  • Interventions targeting increased daily activity and earlier acrophase may improve sleep quality.
  • Further research should explore chronotherapeutic strategies for CIED patients.