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Trans-pulmonary Pressure in ARDS — T3P  

Acute Respiratory Distress Syndrome Clinical Trial

Official title:
Trans-Pulmonary Pressure and Prone Position in Ards Patients

Clinical Trial Summary

Adequate PEEP selection in ARDS is still a matter of research. The main objectives of using PEEP in ARDS are improvement in oxygenation, lung recruitment at the end of expiration, prevention of opening and closing of terminal respiratory units at minimal hemodynamic compromise. The challenge is to carry out these objectives in a patient-centered approach based on individual characteristic of lung pathophysiology. Recently, it has been proposed to set PEEP from the trans-pulmonary end-expiratory pressure. Trans-pulmonary pressure (Ptp) is obtained from the difference between airway pressure and measured esophageal pressure (Pes). Measured Pes values have been found positive in the supine position in ARDS patients, leading to negative values of Ptp. The strategy proposed by Talmor and coworkers is to adjust PEEP up to get Ptp between 0 and 10 cm H2O. Whether this strategy improves survival is under investigation. Prone position ventilation significantly improves survival in severe ARDS as demonstrated by meta-analyses and a recent multicenter randomized controlled trial.

The purpose of present project is to investigate Ptp at end-expiration in the prone position in severe ARDS. The project is centered on the question about what are the values of measured Pes in prone position. The hypothesis is that they are lower than in the supine position due to the relief of the weight of heart, mediastinum and lung and also to recruitment of dorsal lung regions. To investigate this hypothesis, measured Pes, Ptp, end-expiratory lung volume, overall lung recruitment (pressure-volume curve), and regional recruitment by using electrical impedance tomography. will be assessed in supine then in the prone position across two different strategies of PEEP selection, PEEP/FIO2 table and Talmor proposal.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

  • Acute Lung Injury
  • Acute Respiratory Distress Syndrome
  • Respiratory Distress Syndrome, Adult
  • Respiratory Distress Syndrome, Newborn
Clinical Trial Details
NCT number NCT02416037
Study type Interventional
Source Hospices Civils de Lyon
Contact
Status Completed
Phase N/A
Start date January 2016
Completion date April 13, 2017
View Details
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