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Night-to-Night Variability of Novel Physiological Parameters in Home Sleep Apnea Testing

NCT07555119 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 192

Last updated 2026-07-29

No results posted yet for this study

Summary

Obstructive sleep apnea (OSA) is usually diagnosed from a single night of home sleep apnea testing using the apnea-hypopnea index (AHI). However, the AHI varies substantially from night to night, undermining diagnostic accuracy, and shows only modest correlation with symptoms. This variability further limits its usefulness for predicting cardiovascular and other complications. Besides the traditional AHI, more robust physiological markers are needed.

Several emerging physiological metrics - hypoxic burden, ventilatory burden, heart rate variability, autonomic arousals, and the pulse wave amplitude drop index - capture the physiological impact of OSA more comprehensively and demonstrate stronger associations with cardiovascular risk. Despite this promise, their night-to-night variability has not been studied.

A systematic evaluation of both established and novel OSA metrics across nights is essential to identify reliable, stable parameters suitable for clinical routine. This improves diagnostic precision beyond what traditional metrics can provide, enhances patient selection, reduces costs and patient harm, and may improve treatment outcomes.

Conditions

  • Obstructive Apnea
  • Diagnostic
  • Sleep Apnea Syndrome (OSAS)

Sponsors & Collaborators

  • Insel Gruppe AG, University Hospital Bern

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-07-24
Primary Completion
2027-06-30
Completion
2027-06-30

Countries

  • Switzerland

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07555119 on ClinicalTrials.gov