A Phase 3 interventional study of Measure lung and chest wall elastance with esophageal catheter and non-invasive method for measuring the lung elastance in Acute Respiratory Distress Syndrome, sponsored by Centre Hospitalier Intercommunal de Toulon La Seyne sur Mer. Completed at 1 site in France. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2017-05-12.
Sponsored by Centre Hospitalier Intercommunal de Toulon La Seyne sur Mer · Phase 3, Interventional, and Supportive care
The recruitment strategy in Acute respiratory distress syndrome (ARDS) patients mechanically ventilated combines recruitment maneuvers and positive end expiratory pressure (PEEP). Recruitment maneuvers promote alveolar recruitment leading to increased end-expiratory lung volume in order to prevent repetitive opening and closing of unstable lung units and reduce the strain induced by ventilation. In addition, recruitment is effective in improving oxygenation. Variety of recruitment maneuver have been described, the most commonly used is the application of sustained continuous positive airway pressure at 40 cmH2O for 40 seconds. Staircase recruitment maneuver (SRM) is an alternative with good hemodynamic tolerance. Staircase recruitment maneuver (SRM) involves a progressive increase in positive end expiratory pressure (PEEP) (up to 40 cmH2O), in pressure control ventilation, in order to increase end-expiratory lung volume (EELV); then a decreasing PEEP trial is performed. The positive end expiratory pressure (PEEP) to prevent alveolar collapse depends on ratio between lung elastance and chest wall elastance. If chest wall elastance is high, the PEEP to obtain a positive end-expiratory transpulmonary pressure is high. The only way for the time being to know the transpulmonary pressure and the ratio between lung and chest wall elastance is the use of esophageal catheter. A non-invasive method for measuring the lung elastance by measuring volume recruited during a change of pressure (∆PEEP/∆EELV) could be used to avoid the use of esophageal catheter.
1,597 studies on the registry are indexed under Respiratory Distress Syndrome; 312 are open to participants now.
This study's enrollment of 12 is below the median of 60 across 961 interventional studies indexed under Respiratory Distress Syndrome.
Browse Respiratory Distress Syndrome studies →Centre Hospitalier Intercommunal de Toulon La Seyne sur Mer is the lead sponsor of 77 studies on the registry; 20 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Early onset (less than 24 hours)moderate or severe Acute respiratory distress syndrome (ARDS) according to Berlin Definition
Mechanical ventilation for less than 72 hours
Exclusion Criteria:
Bronchopleural fistula, Emphysema, Pneumothorax, Antecedent of pneumothorax, Increase intracranial pressure, Pulmonary arterial hypertension with right heart failure, Hemodynamic instability with mean arterial pressure \< 65 mmHg, Pregnancy.
Experimental and comparator
Procedure: Measure lung and chest wall elastance with esophageal catheter · Other: non-invasive method for measuring the lung elastance
Patients will be in supine position with 30-45° head of bed elevation. The cuff of the endotracheal tube will be transiently overinflated to 60 cmH2O to ensure there will be no air leaks. NMBA (cisatracurium) will be administrated \[9\]. The fraction of inspired oxygen (FiO2) will be adjusted for continuously monitored oxygen saturation (SpO2) between 90 to 94%. Patients will be ventilated in pressure control with 15 cmH2O of driving pressure. A low flow pressure/volume curve from 0 to 40 cmH2O will be performed.
by measuring volume recruited during a change of pressure (∆PEEP/∆EELV)
lung and chest wall elastance
Measure lung and chest wall elastance with esophageal catheter and compare with the non-invasive method at each level of positive end expiratory pressure (PEEP) during recruitment from 5 to 40 cmH2O and derecruitment from 40 to 5 cmH2O.
Time frame: 1 Hour
Direct volume measurements
Determine dynamics of recruitment and derecruitement by direct volume measurements in early onset mechanically ventilated ARDS patients to determine optimal duration and number of breath required for each step during a SRM and a decreasing PEEP trial
Time frame: 1 Hour
the pressure associated with the largest hysteresis on the PV curve
To set positive end expiratory pressure (PEEP)
Time frame: 1 hour
The deflection point on the low flow PV curve (ref Hickling AJRCCM 2001),
To Set positive end expiratory pressure (PEEP)
Time frame: 1 hour
The minimal PEEP to obtain an positive end-expiratory transpulmonary pressure (ref Talmor NEJM 2009)
To set positive end expiratory pressure (PEEP)
Time frame: 1 Hour
- the derecruitment point by SpO2 monitoring during the decreasing positive end expiratory pressure (PEEP)trial (The derecruitment point will be defined as positive end expiratory pressure (PEEP) for which SpO2 decrease) (ref Girgis RC2006).
to set positive end expiratory pressure (PEEP)
Time frame: 1 Hour
This study is completed, as verified in May 2017. You cannot join it, but the record below documents what was studied.
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Centre Hospitalier Intercommunal de Toulon La Seyne sur Mer