An InnovaTive Approach to Ventilator-Induced Diaphragmatic Dysfunction

Study Overview
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Brief Summary
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'Ventilator-Induced Diaphragmatic Dysfunction (VIDD) was originally described by Vassilakopoulos and Petrof in 1998, where it is used to cover the effects of mechanical ventilation and respiratory muscle unloading on the diaphragm. A recent article by Grosu and colleagues has demonstrated that the thickness of the diaphragm decreases with about 6% a day in a small cohort of mechanically ventilated patients. This is a longitudinal, single-centre, observational cohort study to examine the long-term effects of invasive mechanical ventilation on the diaphragm, and to study the risk factors associated with VIDD.

Official Title
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An InnovaTive Approach to Ventilator-Induced Diaphragmatic Dysfunction

Conditions
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Ventilator-induced Diaphragm Dysfunction, VIDD

Intervention / Treatment
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* Other: Ultrasound measurement


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: The patient must suffer from respiratory insufficiency requiring mechanical ventilation Exclusion Criteria: The patient has been hospitalized and mechanically ventilated (invasive or non- invasive) in the period up to 1 year before start of the study. The patient is known or suspected to have an anatomical malformation of the diaphragm. The patient suffers from a disease that may impair diaphragmatic function: Central neural disease at the level of the brain (Multiple sclerosis, stroke, Arnold-Chiari malformation) and spinal cord (quadriplegia, amyotrophic lateral sclerosis, poliomyelitis, spinal muscular atrophy, syringomyelia). Neural disease of the phrenic nerve (Guillain-Barré syndrome, tumor compression, neuralgic neuropathy, chronic inflammatory demyelinating polyneuropathy, Charcot-Marie-Tooth disease). Disorders of the neuromuscular junction (Myasthenia gravis, Lambert- Eaton syndrome, botulism, organophosphate poisoning). Muscular diseases (muscular dystrophies, myositis (infectious, inflammatory, metabolic). The patient is known or suspected to have a psychiatric illness inhibiting his/her cooperation with the study protocol or possibly obscuring the obtained results. The patient has been mechanically ventilated for over 24 hours before the first ultrasonographic measurement can be performed.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Single arm Ultrasound measurement<br>Ultrasound measurement | Other: Ultrasound measurement<br>* Thickness measurement through ultrasound. The investigators will perform daily ultrasound measurements to assess the evolution in thickness during mechanical ventilation<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in diaphragm thickness |  | Participants will be followed during their ICU stay, an expected average of 1 week |