respiratory failure, acute respiratory failure, respiratory insufficiency breathing problems, trouble with breathing
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Adults >18 yearsBody mass index (BMI) =18 and =30 kg/m2Able to comprehend and sign the Information letter and Informed Consent (IC) prior to enrolment in the study.
Exclusion criteria
Exclusion criteria: Contra-indication to EIT monitoring (e.g. burns, pacemaker, thoracic wounds limiting electrode placement)Contra-indications for oesophageal balloon catheter placement (e.g. history of gastric bypass surgery, gastro-oesophageal junction surgery, oesophageal stricture, recent upper gastrointestinal hemorrhage or known/suspected varices).Previous history of cancer requiring radiotherapy or surgery to the lungs Suspected of not being able to comply with the trial protocol Inability to personally provide written informed consent (e.g. for linguistic or mental reasons) and/or take part in the studyNot have fasted for at least 2 hoursKnown respiratory pathology (i.e. COPD, asthma, fibrosis)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| In this explorative study, we will determine the validity of multiple techniques to detect changes in respiratory muscle effort. The primary outcome will be the strength of association between ?Pes (gold standard to measure respiratory muscle effort) and the variables derived from respiratory muscle US, EIT and parasternal EMG. We will compute the Pearson correlation coefficient, or if data violate normality assumptions Spearman’s rank correlation coefficient will be used as a non-parametric alternative. | — |
Secondary
| Measure | Time frame |
|---|---|
| To assess the sensitivity of each measurement technique to detect physiological change between conditions, we will calculate the Standardized Response Mean (SRM) for both ?Pes and the variables derived from respiratory muscle US, EIT and parasternal EMG. The SRM is defined as the mean of the individual change scores (post–pre) divided by the standard deviation of those change scores. | — |
Countries
Netherlands
Contacts
Radboud Universitair Medisch Centrum