Microbiologic Contamination of Home Non Invasive Ventilators

University Hospital, Rouen54 enrolled

Overview

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.

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.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Chronic Respiratory Failure COPD Obesity Hypoventilation Syndrome

Interventions

Microbiological samplingDIAGNOSTIC_TEST

An microbiological sampling of the ventilator humidifier will be performed.

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

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

Locations (1)

Rouen University Hospital

Bois-Guillaume, Normandy, France

Outcomes

Primary Outcomes

Prevalence of microbial contamination of non invasive ventilators humidifier

Time frame: 7 days

Secondary Outcomes

Microbiological ecology in the study population

The microbiological ecology of the ventilator humidifier will be describes (percentage of each pathogen)

Time frame: 7 days

Comparison between COPD and Obesity hypoventilation syndrome patients microbial ecology

We will compare the microbiological ecology of patients in the COPD and in the Obesity hypoventilation group (percentage of each pathogen in each group)

Time frame: 7 days

Compliance to recommendations regarding the maintenance of the humidifier

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)

Time frame: 7 days

Correlation between compliance to maintenance recommendations and contamination rate

Time frame: 7 days

Comparison of exacerbation frequency in COPD patients and isolation of respiratory pathogens in the humidifier

Data from ClinicalTrials.gov

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