NCT04051645

Evaluation of Breathing Effort in Spontaneously Breathing Subjects

Problems of Measurement and Evaluation of Breathing Effort in Spontaneously Breathing Subjects

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 20 (estimated)
• Sponsor: Czech Technical University in Prague · Academic / Other
• Sex: All
• Age: 18 Years – 40 Years
• Healthy volunteers: Accepted

Summary

The aim of the research project is to evaluate the breathing effort using the Work of Breathing (WoB) and Pressure-Time Product (PTP) parameters, depending on the increasing flow resistance. The research project is concerned with assessing the increased (imposed) breathing effort using the Work of Breathing (iWoB) and the Pressure-Time Product (iPTP). The main hypothesis tested is the differential effect of flow resistance on iWoB and iPTP parameters in spontaneous breathing of healthy probands.

Detailed description

Due to the different calculation of iWoB and iWoB, these parameters may be affected at higher flow resistance values. The proposed experiment will be used to compare iWoB and iPTP obtained during spontaneous breathing to healthy subjects.

Conditions

• Healthy

Interventions

Type	Name	Description
DEVICE	Breathing through a system with adjustable flow resistance	The proband will breathe through the adjustable flow resistance within the experiment, to which a standard D-lite Flow sensor will be connected, and the airway pressure, flow, minute consumption, oxygen and carbon dioxide, tidal volume, oxygen saturation of peripheral blood and oxygen and carbon dioxide concentrations in both inspired and expired air will be recorded using the Datex-Ohmeda S/5 Patient Monitor vital signs monitor. The proband will breathe through the flow resistors in a randomized order, and pre-defined three-minute pauses will be maintained between measurements with different flow resistance values. Each measurement will take approximately two minutes and will be measured on ten different flow resistances.

Timeline

• Start date: 2019-06-24
• Primary completion: 2021-06-01
• Completion: 2021-09-01
• First posted: 2019-08-09
• Last updated: 2021-02-26

Locations

1 site across 1 country: Czechia