Evaluation of Gas Propagation in Snow During Breathing of Subjects Under Simulated Avalanche Snow
GasProp
1 other identifier
interventional
50
1 country
1
Brief Summary
The study is aimed at investigation of respiratory gases propagation in snow. The study involves volunteers breathing into the snow whereas concentrations of gases are measured at various positions in the snow.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Feb 2022
Longer than P75 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
February 7, 2022
CompletedFirst Submitted
Initial submission to the registry
February 21, 2022
CompletedFirst Posted
Study publicly available on registry
March 2, 2022
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 31, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
May 31, 2025
CompletedMarch 2, 2022
February 1, 2022
3.3 years
February 21, 2022
March 1, 2022
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
The length of breathing
Time to termination of the breathing experiment due to the decision of the tested subject, or determined by high end-tidal carbon dioxide value or by the order by the clinician assessing the health status of the subjects.
Continuously within up to 20 minute interval from the beginning of the breathing experiment
Study Arms (1)
Breathing in the snow
EXPERIMENTALBreathing in the snow using a specially designed apparatus and measuring the respiratory gases distribution in snow.
Interventions
Re-breathing of gas by breathing into the simulated avalanche snow
Eligibility Criteria
You may qualify if:
- healthy and fit volunteers, classified as The American Society of Anesthesiologists class I
- without a smoking history
You may not qualify if:
- Tiffeneau Index less than 0.70
- any cardiovascular or respiratory condition
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Czech Technical University, Faculty of Biomedical Engineering
Kladno, 272 01, Czechia
Related Publications (2)
Roubik K, Sieger L, Sykora K. Work of Breathing into Snow in the Presence versus Absence of an Artificial Air Pocket Affects Hypoxia and Hypercapnia of a Victim Covered with Avalanche Snow: A Randomized Double Blind Crossover Study. PLoS One. 2015 Dec 14;10(12):e0144332. doi: 10.1371/journal.pone.0144332. eCollection 2015.
PMID: 26666523BACKGROUNDRoubik K, Sykora K, Sieger L, Ort V, Horakova L, Walzel S. Perlite is a suitable model material for experiments investigating breathing in high density snow. Sci Rep. 2022 Feb 8;12(1):2070. doi: 10.1038/s41598-022-06015-y.
PMID: 35136116BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Karel Roubik, prof.
Czech Technical University in Prague, Fac. of Biomedical Engineering
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- BASIC SCIENCE
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
February 21, 2022
First Posted
March 2, 2022
Study Start
February 7, 2022
Primary Completion
May 31, 2025
Study Completion
May 31, 2025
Last Updated
March 2, 2022
Record last verified: 2022-02
Data Sharing
- IPD Sharing
- Will not share