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Heat Transfer by Clinical Warming DevicesNCT06198959

Heat Loss in Humans Covered With Full-Body Blankets Connected to Different Warming Devices

A study testing Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system., Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system. and Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775 in people with Heat Transfer by Clinical Warming Devices, run by The Cleveland Clinic at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The investigators propose a single-center multiple crossover randomized trial to determine the efficacy of four warming devices and five warming blankets. The investigators will measure cutaneous heat loss/ gain using thermal flux transducers in unanesthetized volunteers. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
What is being tested?
Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system., Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system. and Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
20 participants
Where
1 siteUnited States
Study dates
15 Feb 2024to 2 Mar 2026
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Body-mass index 20-33 kg/m2
  • Age 18-40 yrs.
  • ASA Physical Status 1-2.

Who cannot join

  • Serious skin lesions
  • History of allergy or skin sensitivity to tape or adhesive materials
  • History of serious vascular disease in the arms, including Raynaud's Syndrome
  • History of recent fever or infection

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Cleveland Clinic

    Cleveland, Ohio, 44195

Other trials in United States

About this study

The investigators propose a single-center multiple crossover randomized trial to determine the efficacy of four warming devices and five warming blankets. The investigators will measure cutaneous heat loss/ gain using thermal flux transducers in unanesthetized volunteers.

Read the detailed description

The investigators propose a single-center, assessor-Blinded, multiple crossover randomized trial to determine the efficacy of four warming devices and five blankets. The investigators will measure cutaneous heat loss/ gain using thermal flux transducers in unanesthetized volunteers.

American Society of Anesthesiologists (ASA) physical status 1 and 2 adults with body-mass index 20-33 kg/m2 will be included in this study. Volunteers will be excluded if they have serious skin lesions, history of allergy or skin sensitivity to tape or adhesive materials, serious vascular disease in the arms including Raynaud's Syndrome, or a history of recent fever or infection.

20 volunteers will be randomized to one of 5 different sequence groups: 1. Mistral Air, Blower MA1200-PM. plus the Adult Blanket plus, MA2220, 2. Mistral Air, Blower MA1200-PM plus the Premium Adult Blanket, 3320, 3. 3M, Bair Hugger, Blower 775 plus Blanket full body, 30000, 4. Smiths Medical, Blower L1-CW-100V, plus Blanket full body SWU-2001, 5. Care Essential, Cocoon, Blower CWS5000 plus Blanket Full Body blanket (CLM0101).

Being tested
Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system., Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system., Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775, FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system., Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system.Device

    Evaluate cutaneous heat loss/ gain using thermal flux transducers while volunteers are covered with the Adult Blanket plus, MA2220 blanket connected to the Mistral Air, Blower. MA1200-PM system for 30 minutes.

  • Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system.Device

    Evaluate cutaneous heat loss/ gain using thermal flux transducers while volunteers are covered with the premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system.

  • Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775Device

    Evaluate cutaneous heat loss/ gain using thermal flux transducers while volunteers are covered with the blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775 system.

  • FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system.Device

    Evaluate cutaneous heat loss/ gain using thermal flux transducers while volunteers are covered with the FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system.

  • Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 systemDevice

    Evaluate cutaneous heat loss/ gain using thermal flux transducers while volunteers are covered with the Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system.

Study groups in NCT06198959
Study groupRoleWhat they receive
ABCDEExperimentalA. Volunteers will be covered with the Adult Blanket plus, MA2220 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. B. After a 40 minutes washout period, the volunteers will be covered with the Premium Adult Blanket, 3320 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. C. After a 40-minute washout period, the volunteers will be covered with the Blanket full body, 30000 connected to the 3M, Bair Hugger, Blower 775 for 30 minutes. D. After a 40-minute washout period, the volunteers will be covered with the FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system for 30 minutes. E. Finally and after a last 40-minute washout period, the volunteers will be covered with the Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system for 30 minutes.
Receives: Device: Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775; Device: FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system.; Device: Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system
BDECAExperimentalB. Volunteers will be covered with the Premium Adult Blanket, 3320 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. D. After a 40-minute washout period, the volunteers will be covered with the FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system for 30 minutes. E. After a 40-minute washout period, the volunteers will be covered with the Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system for 30 minutes. C. After a 40-minute washout period, the volunteer will be covered with the Blanket full body, 30000 connected to the 3M, Bair Hugger, Blower 775 for 30 minutes. A. Finally and after a last 40-minute washout period, the volunteers will be covered with the Adult Blanket plus, MA2220 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes.
Receives: Device: Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775; Device: FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system.; Device: Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system
CEBADExperimentalC. Volunteers will be covered with the blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775 for 30 minutes. E. After a 40-minute washout period, the volunteers will be covered with the Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system for 30 minutes. B. After a 40-minute washout period, the volunteers will be covered with the Premium Adult Blanket, 3320 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. A. After a 40-minute washout period, the volunteers will be covered with the adult blanket plus, MA2220 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. D. Finally and after a last 40-minute washout period, the volunteers will be covered with the FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system for 30 minutes.
Receives: Device: Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775; Device: FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system.; Device: Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system
DCAEBExperimentalD. Volunteers will be covered with the FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system for 30 minutes. C. After a 40-minute washout period, the volunteers will be covered with the blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775 for 30 minutes. A. After a 40-minute washout period, the volunteers will be covered with the adult blanket plus, MA2220 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. E. After a 40-minute washout period, the volunteers will be covered with the blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system for 30 minutes. B. Finally and after a last 40-minute washout period, the volunteers will be covered with the Premium Adult Blanket, 3320 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes.
Receives: Device: Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775; Device: FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system.; Device: Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system
EADBCExperimentalE. Volunteers will be covered with the blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system for 30 minutes. A. After a 40-minute washout period, the volunteers will be covered with the adult blanket plus, MA2220 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. D. After a 40-minute washout period, the volunteers will be covered with the FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system for 30 minutes. B. Finally and after a last 40-minute washout period, the volunteers will be covered with the Premium Adult Blanket, 3320 connected to the Mistral Air, Blower MA1200-PM system for 30 minutes. C. Finally and after a last 40-minute washout period, the volunteers will be covered with the blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775 for 30 minutes.
Receives: Device: Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system.; Device: Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775; Device: FilteredFlo® Air Blanket connected to the WarmAir® Convective Warming system.; Device: Blanket Full Body blanket (CLM0101) connected to the Care Essential, Cocoon, Blower CWS5000 system

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Heat transfer, thermal flux

    While using one of the 5 different warming blanket and warming blower systems, heat transfer will be measured on at 15 sites: Head, upper arm, forearm, hand, finger, back, chest, abdomen, medial thigh, lateral thigh, posterior thigh, anterior calve, posterior calves, foot and toe.

    Measured: 30 minutes

Secondary outcomes (1)
  1. Thermal comfort

    After completing 30 minutes using the warming system, before removing the warming blanket, volunteers will rate their thermal comfort in a 0-100 mm scale. the minimum is 0 representing the coldest and the maximum value is 100 mm representing the hotest sensation the participant can report.

    Measured: 30 minutes

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 Jan 2024
  2. Study start15 Feb 2024
  3. Primary completion2 Mar 2026
  4. Study completion2 Mar 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Other
Allocation
Randomised
Intervention model
Crossover
Model description
The investigators propose a single-center multiple crossover randomized trial to determine cutaneous heat transfer with four warming devices and five blankets. Cutaneous heat loss/ gain will be measured with thermal flux transducers in unanesthetized volunteers.
Masking
None (open label)
Enrolment
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06198959
Sponsor's protocol ID
22-871
Status last verified
Jul 2025
First submitted
28 Dec 2023
Last updated
5 Mar 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes

Questions about this trial

What is this clinical trial studying?

A study testing Adult blanket plus, MA2220 blanket connected to the Mistral Air, Blower MA1200-PM system., Premium adult blanket, 3320 blanket connected to the Mistral Air, Blower MA1200-PM system. and Blanket full body, 30000 blanket connected to the 3M, Bair Hugger, Blower 775 in people with Heat Transfer by Clinical Warming Devices, run by The Cleveland Clinic at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 5 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Heat transfer, thermal flux (time frame: 30 minutes). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Mar 2026.

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