Chronic Obstructive Pulmonary Disease
Conditions
Keywords
COPD, Nasal High Flow Therapy, tracheotomy stent, tracheotomy
Brief summary
The aim of this study is to gain knowledge about effects of high flow transnasal insufflation on various breathing parameters like intratracheal pressure conditions, CO2 elimination, breathing frequency and tidal volume.
Detailed description
Ten patients, who are supplied with a tracheostomy stent (placeholder) for reinsertions after long term ventilation will be treated for a short time during the day with the nasal high flow system AIRVO at different flow rates (15, 30, 45L/min) to estimate possible long term implications of high flow treatment. Respiration is measured by impedance plethysmography with a calibrated belt system (Respitrace, VIASYS). Pressure and end tidal CO2 concentration is measured inside of the placeholder. The order of the high flow rates (15, 30, 45L/min) is randomized; each flow rate is measured for 15 minutes. A wash out time of ten minutes is planned after each phase. In this time the patient breathes his individual oxygen flow rate with attention to the oxygen saturation, which should not exceed 96%. Transcutaneous PCO2 and SpO2 is monitored with TOSCA during the study.
Interventions
PROCEDUREHigh flow therapy
Each patient is treated with nasal high flow at different flow rates (15, 30, 45L/min). The order of flow rates is randomized. Each flow rate will be used for 15 minutes. A wash out time of ten minutes is planned after each phase, during which the patient uses his his individual oxygen flow.
Sponsors
Institut für Pneumologie Hagen Ambrock eV
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
20 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Patients in a stable weaning phase after long term ventilation * Patients supplied with tracheostomy stent (placeholder) * Patients in stable respiratory situation
Exclusion criteria
* Incapable of giving consent * Any other severe or acute physical illness which requires intensive medical care
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Intratracheal pressure conditions | 2 hours | The effects of high flow transnasal insufflation on intratracheal pressure conditions is measured with the Hans Rudolph Inc. pressure amplifier and continuously recorded breath by breath. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Intratracheal endtidal CO2 concentration | 2 hours | The effects of high flow transnasal insufflation on endtidal CO2 concentration is measured with the AD Instruments gas analyser and continuously recorded breath by breath. |
| Breathing frequency and tidal volume | 2 hours | The effects of high flow transnasal insufflation on breathing frequency and tidal volume is measured with the Viasys Respitrace calibrated belt system and continuously recorded breath by breath. |
Countries
Germany
Outcome results
None listed