U.S., March 27 -- ClinicalTrials.gov registry received information related to the study (NCT06895759) titled 'Impact of CO2 Absorption on Gas Exchange and Ventilation Patterns While Breathing Into a Snow Air Pocket' on March 14.
Brief Summary: Asphyxia is by far the most common cause of death after critical avalanche burial. The presence of an air pocket increases the survival chances, but expired air rich in carbon dioxide (CO2) progressively displaces oxygen (O2) in the air pocket, a phenomenon known as displacement asphyxia. In addition, an increase in the inspired concentration of CO2 (FiCO2) reduces the alveolar partial pressure of O2 (PAO2), as explained by the alveolar gas equation. Underlining this, a recent experimental porcine st...