Chronic Respiratory Failure, COPD, Obesity Hypoventilation Syndrome
Conditions
Brief summary
Home non-invasive ventilators are daily used by patients with chronic respiratory failure. There are frequently used with warming and humidifying systems. These systems need to be cared for and frequently washed by the patient. The aim of this study is to evaluate if the humidifying system of home ventilators are colonized by microbiological germs.
Detailed description
The use of non-invasive ventilators is common for treating respiratory failure. Their care relies on the patients and their carers. No study has assessed the efficacy of such care with respect to the number of microbiological specimens that remain in the humidifier.
Interventions
DIAGNOSTIC_TESTMicrobiological sampling
An microbiological sampling of the ventilator humidifier will be performed.
Sponsors
ADIR Association
University Hospital, Rouen
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patient established on home non invasive ventilation for more than 6 months * With a compliance \>4hours/day * Who brought their ventilator for the assessment * Diagnosed with COPD or Obesity hypoventilation syndrome (OHS) * Who consent * With an age \> 18 years
Exclusion criteria
* Age under 18 * Ongoing exacerbation * Not able to consent * Pregnant or breastfeeding
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Prevalence of microbial contamination of non invasive ventilators humidifier | 7 days |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Microbiological ecology in the study population | 7 days | The microbiological ecology of the ventilator humidifier will be describes (percentage of each pathogen) |
| Comparison between COPD and Obesity hypoventilation syndrome patients microbial ecology | 7 days | We will compare the microbiological ecology of patients in the COPD and in the Obesity hypoventilation group (percentage of each pathogen in each group) |
| Compliance to recommendations regarding the maintenance of the humidifier | 7 days | Compliance to recommendations will be assessed by a questionnaire containing 7 items regarding how the humidifier is maintained by the patient : * Who is maintaining the ventilator (descriptive) * At which frequency are you changing the water (Everyday (adequate), every other-day (almost adequate), every week (inadequate), more than weekly (inadequate) * What type of water are you using (descriptive) * At which frequency are you cleaning the mask (Everyday (adequate), every other-day (almost adequate), every week (inadequate), more than weekly (inadequate) * At which frequency are you cleaning the humidifier (Everyday (adequate), every other-day (almost adequate), every week (inadequate), more than weekly (inadequate) * How are you cleaning the humidifier? Water (inadequate), soap (adequate), dishawashing liquid (inadequate) |
| Correlation between compliance to maintenance recommendations and contamination rate | 7 days | — |
| Comparison of exacerbation frequency in COPD patients and isolation of respiratory pathogens in the humidifier | 12 months | — |
Countries
France
Outcome results
None listed