An interventional study of Breathing in the simulated avalanche snow in Accident Caused by Snow Avalanche, sponsored by Czech Technical University in Prague. Status unknown at 2 sites in Czechia. Open to participants aged 18 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-02-25.
Sponsored by Czech Technical University in Prague · Not applicable, Interventional, and Basic science
The aim of the study is to investigate respiratory parameters of a person in the simulated avalanche snow and consequent use of the measured data for development of a mathematical-physical model of breathing during increasing hypercapnia in the avalanche.
The study is a part of a university research project aimed at studying physiological conditions and development of breathing parameters of a person breathing in the simulated avalanche snow. Presence of an air pocket and its size play an important role in survival of victims buried in the avalanche snow. Even small air pockets facilitate breathing, yet they do not provide a significant amount of fresh air for breathing. The investigators hypothesize that the size of the air pocket significantly affects the airflow resistance and work of breathing. The aim of the study is to investigate the effect of the air pocket volume on gas exchange and work of breathing in subjects breathing into the simulated avalanche snow.
156 studies on the registry are indexed under Hypercapnia; 31 are open to participants now.
This study's planned enrollment of 45 is above the median of 36 across 120 interventional studies indexed under Hypercapnia.
Browse Hypercapnia studies →Czech Technical University in Prague is the lead sponsor of 36 studies on the registry; 6 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Breathing in the simulated avalanche snow. Breathing into model of wet avalanche snow with a small air pocket
Other: Breathing in the simulated avalanche snow
Breathing in the simulated avalanche snow. Breathing into model of dry avalanche snow with a small air pocket
Other: Breathing in the simulated avalanche snow
Breathing in the simulated avalanche snow. Breathing into model of wet avalanche snow with a large air pocket
Other: Breathing in the simulated avalanche snow
Breathing in the simulated avalanche snow. Breathing into model of dry avalanche snow with a large air pocket
Other: Breathing in the simulated avalanche snow
Breathing in the simulated wet or dry avalanche snow with a small or large air pocket
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.
Time frame: Continuously within 30 minute interval from the beginning of the breathing experiment
Started Jan 2018 (actual). Primary completion is estimated for May 2022, 51 months after the start.
Of 50 non-industry interventional studies with no phase under Hypercapnia, half reached primary completion within 13 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 32. This study's planned 51 months is above that.
Counting every sponsor, half of 54 studies reached it within 14 months; a quarter within 7 and three quarters within 32.
How these figures are worked out, and which studies are left out of them.
This study is status unknown, as verified in Feb 2021. You cannot join it, but the record below documents what was studied.
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Czech Technical University in Prague