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CompletedNCT02423681Updated Feb 15, 2017

A Comparison of CPAP With and Without Humidification: A Pilot Study

An interventional study of ThermoSmart and Without ThermoSmart in Obstructive Sleep Apnea, sponsored by Fisher and Paykel Healthcare. Completed at 1 site in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-02-15.

Sponsored by Fisher and Paykel Healthcare · Not applicable, Interventional, and Health services research

Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

To compare a group of patients with our standard treatment of continuous positive airway pressure (CPAP) and another group of patients with CPAP and a humidifier attached. The therapy cost and the successfulness of the treatment will be measured. A humidifier is a water chamber that is currently added to CPAP only if the patients needs it.

02

Conditions studied

  • Obstructive Sleep Apnea
03

In context

Sleep Apnea, Obstructive

2,198 studies on the registry are indexed under Sleep Apnea, Obstructive; 469 are open to participants now.

This study's enrollment of 20 is below the median of 53 across 1,448 interventional studies indexed under Sleep Apnea, Obstructive.

Browse Sleep Apnea, Obstructive studies →

Lead sponsor

Fisher and Paykel Healthcare is the lead sponsor of 84 studies on the registry; 15 are open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 10 (91%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Older than 18 years of age
  • Diagnosed with OSA (obstructive sleep apnea) and eligible for CPAP treatment under local requirements (NICE guidelines: AHI (apnea hypopnea index) ≥ 15, or AHI > 5 with significant daytime sleepiness)
  • Naïve to CPAP therapy, i.e. have not been prescribed, or used CPAP in the last 5 years.
  • Fluent in spoken and written English

Exclusion criteria

Exclusion Criteria:

  • Significant uncontrolled cardiac disease, as per the principal investigator's discretion
  • Co-existing lung disease, as per the principal investigator's discretion
  • Co-existing sleep disorder, such a predominant central sleep apnoea
  • Pregnancy
  • Participants that are unable or unwilling to give informed consent.
05

Study design

Phase
Not applicable
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
20 participants (actual)

Study arms

  • Active comparator
    Heated humidification as first intention (HH1st)

    Subjects receive heated humidification as first intention with ThermoSmart

    Device: ThermoSmart

  • Placebo comparator
    Non-heated humidification

    Subjects will receive no humidification. However they can be switched to the humidification group if patients complains of nasal dryness, congestion, nose bleed or if they had significant leak that cannot be resolved by two changes of mask.

    Device: Without ThermoSmart

Interventions

  • DeviceThermoSmart

    Heated humidification as first intention (HH1st) with ThermoSmart

  • DeviceWithout ThermoSmart

    ThermoSmart is switched off

06

What researchers measure

Primary outcomes

  1. Overall cost of equipment

    (cost of equipment required for CPAP therapy, including CPAP device and mask, and all related consumables

    Time frame: 6 months

  2. Number and type of additional interventions

    The number and type of additional interventions (masks, nasal steroids) and the associated cost

    Time frame: 6 months

  3. Duration of appointments

    Time spent with/on each patient (i.e preparation and follow-up time as well as appointment time)

    Time frame: 6 months

  4. Number of unplanned follow-ups

    number of unplanned follow-ups

    Time frame: 6 months

Secondary outcomes

  1. Adherence to therapy

    Compliance data from the device

    Time frame: 6 months

  2. Therapy Acceptance

    Number of withdrawals and drop out from the therapy

    Time frame: 6 months

  3. Apnea Hypopnea Index (AHI)

    AHI to measure the treatment efficacy

    Time frame: 6 months

  4. Leak

    Total system leak from the device

    Time frame: 6 months

  5. Side effects and symptoms reported

    Any side effects and symptoms reported with the therapy

    Time frame: 6 months

  6. Self-reported satisfaction

    Self-reported satisfaction via treatment questionnaires

    Time frame: 6 months

  7. Patient sleeping environment temperature and humidity

    The temperature and humidity of the patient's environment as measured by a humidity logger

    Time frame: 6 months

07

Study locations

1 site
  • Lung Function and Sleep Unit, St George's Hospital
    London, United Kingdom
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 15, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02423681
Lead sponsor
Fisher and Paykel Healthcare
Responsible party
Sponsor
First posted
Apr 22, 2015
Start date
Jun 2015
Primary completion
Oct 2016
Completion
Oct 2016
Last update
Feb 15, 2017

Study contacts

Sara Parsons, Chief Clinical Physiologist
principal investigator · Lung Function and Sleep Unit, St George's Hospital

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2017. You cannot join it, but the record below documents what was studied.

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