- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02473172
Impact of the Assisted Ventilation Mode on Diaphragm Efficiency in Critically Ill Patients (NAVA_PSV)
Impact of Pressure Support Ventilation (PSV) Versus Neurally Adjusted Ventilatory Assist (NAVA) Diaphragm Efficiency
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Phase 2
Contacts and Locations
Study Locations
-
-
-
Bari, Italy, 70124
- Azienda Ospedaliero Universitaria Policlinico
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- older than 18 years
- oro-tracheally or naso-tracheally intubate
- had been ventilated for acute respiratory failure in control mechanical ventilation for at least 72 hours consecutively
- candidate to assisted ventilation
- Hemodynamically stable without vasopressor or inotropes (excluding a dobutamine and dopamine infusion lower than 5 gamma/Kg/min and a 3 gamma /Kg/min, respectively
- normothermia
Exclusion Criteria:
- Neurological or neuromuscular pathologies
- phrenic nerve dysfunction
- contraindications to the insertion of a nasogastric tube (for example recent upper gastrointestinal surgery, esophageal varices).
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Pressure Support Ventilation
Assisted mechanical ventilation
|
Assisted mechanical ventilation
|
Experimental: Neurally Adjusted Ventilatory Assist
Assisted mechanical ventilation
|
Assisted mechanical ventilation
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Diaphragm neuro-ventilatory efficiency (NVE)
Time Frame: 48 hours
|
Diaphragm neuro-ventilatory efficiency (NVE) to convert the electrical diaphragm activity (EAdi) into volume.
NVE is impaired by controlled mechanical ventilation (CMV) and the assisted mode should serve to restore it.
All the studied patents were ventilated for more than 48 hours in CMV, a period shown to be sufficient to induce diaphragm atrophy and therefore depress NVE.
NVE is measured by the ratio between tidal volume (VT) and the EAdi peak (NVEpeak) or by the ratio between VT and the are under the EAdi signal.
EAdi is obtained by the EAdi catheter, a nasogastric catheter equipped with electrodes (Maquet Critical Care, Solna, Sweden).
EAdi is measured in microVolt.
The Servo i ventilator (Maquet Critical Care, Solna Sweden) is equipped with a module able to amplify and show on a screen the EAdi trace and the corresponding value.
Both the Servo i ventilator and the EAdi catheter are approved for clinical use.
|
48 hours
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Diaphragm neuro-mechanical efficiency (NME)
Time Frame: 48 hours
|
Diaphragm neuro-mechanical efficiency (NME) to convert the electrical diaphragm activity (EAdi) into negative pressure is impaired by controlled mechanical ventilation (CMV). The assisted mode should serve to restore it. All the studied patents are ventilated for more than 48 hours in CMV, a period shown to be sufficient to induce diaphragm atrophy and hence depress NME. NME is measured by simultaneously recording EAdi and airway opening pressure during an end-expiratory airway opening occlusion and expressed in centimeters of waters (cmH2O)/microVolt. |
48 hours
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Salvatore Grasso, Prof, University of Bari, Italy
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- NAVA_PSV
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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