Compatible With All Sleep Study Types (1,2,3)

DormoVision X™ Is Compatible With All Sleep Study Types (1, 2, 3)

Sleep is complex, and diagnosing sleep disorders properly often requires different levels or “types” of sleep studies. You might wonder: Can one single device measure across those levels with accuracy? The recent validation study of DormoVision X™ (previously called the “Vlab device”) suggests yes. It aligns very closely with gold standard polysomnography (PSG), making it suitable for Types 1, 2, and 3 sleep studies.

Validation Study Outline

• Participants and Design: 47 adults (average age ~52, mixed genders, average BMI ~29.4) underwent simultaneous testing with DormoVision X™ and the gold standard full lab polysomnography (PSG using the Nox A1 system). (pubmed.ncbi.nlm.nih.gov)
• Scoring and Signals: Both tests were manually scored by experts, blinded to each other, following standard guidelines. Key measures included the Apnea Hypopnea Index (AHI) as primary outcome, plus secondary sleep parameters.
• Results (Key Findings):
  • AHI: Mean AHI with DormoVision X™ = 21.7 ± 24.2 events/hour vs. Nox A1 = 21.5 ± 23.9 events/hour. No significant difference (p = 0.7).
  • Severity classification agreement: Very high (Cohen’s kappa = 0.97), showing that DormoVision X™ classified severity nearly identically to the lab standard.
  • Secondary parameters: Strong correlation for most sleep metrics such as total sleep time and sleep latency. A notable exception was REM latency, which showed a statistically significant difference.

Why This Means Compatibility Across Study Types

• Type 1 compatibility: Because DormoVision X™ matches lab PSG closely in AHI, sleep and wake times, and other parameters, it can serve as a substitute or supplement for full polysomnography, especially when lab studies are not feasible.
• Type 2 compatibility: DormoVision X’s design, which includes mask based physiological sensors and wireless connectivity, plus its performance in lab testing, suggest it works well in home settings with multiple sensors.
• Type 3 compatibility: For simpler home based respiratory assessments and sleep timing, DormoVision X™ offers high accuracy for primary respiratory metrics such as AHI and oxygen desaturation, making it suitable for many use cases of Type 3.

Strengths and Limitations

Strengths:

• High accuracy in detecting respiratory events (AHI) with strong agreement to the gold standard
• Good performance across secondary metrics, usable for assessing sleep architecture in most cases
• Usability features such as comfort, suitability for home assessments, and wireless data transfer

Limitations:

• Differences in REM latency mean that for studies where REM timing is critical, DormoVision X™ may be less precise
• Type 3 studies that require minimal sensors may not capture full brain wave data, so although DormoVision X™ may provide more than expected, some details remain out of reach without EEG
• As with all devices, correct setup and fit are essential for accurate results

What This Means for Patients and Clinicians

• Flexibility: Clinicians can use DormoVision X™ in labs, clinics, or at home depending on patient needs and available resources
• Lower barriers: Patients who cannot easily attend a sleep lab due to cost, travel, or discomfort can receive nearly equivalent diagnostic value at home
• Cost and accessibility: Devices like this can help reduce costs and expand access to sleep disorder screening and follow up
• Decision support: For follow up studies, treatment monitoring, or progression checks, the consistency with PSG makes DormoVision X™ a reliable tool