NCT06020404

Brief Summary

In adult patients with acute respiratory distress syndrome (ARDS), the beneficial effects of prone position (PP) have been well investigated and explored; it reduces intrapulmonary shunt (Qs/Qt) and enhances lung recruitment, modifying both lung ventilation (VA) and lung perfusion (Q) distribution, finally generating an improvement in VA/Q matching and reversing oxygenation impairment;it reduces right ventricular afterload, increase cardiac index in subjects with preload reserve and reverse acute cor pulmonale in severe ARDS patients, but in infants and children there is still a lack of clear evidence. Taken together, these effects explain why PP improves oxygenation, limits the occurrence of ventilator-induced lung injury and improves survival. Prone position is simple to perform in infants and in some neonatal and pediatric intensive care units is already commonly accomplished. However, a detailed analysis of the respective effects of high PEEP and prone position is lacking in infants/children with ARDS, while these two tools may interfere and/or act coherently. A recent multicenter, retrospective analysis of patients with pediatric acute respiratory distress syndrome (PARDS) describes how patients managed with lower PEEP relative to FIO2 than recommended by the ARDSNet model had higher mortality, suggesting that future clinical trials targeting PEEP management in PARDS are needed. We designed a physiological study to investigate the physiological effects of prone positioning on lung recruitability in infants/children with acute respiratory distress syndrome.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
15

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Sep 2023

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 28, 2023

Completed
3 days until next milestone

First Posted

Study publicly available on registry

August 31, 2023

Completed
1 day until next milestone

Study Start

First participant enrolled

September 1, 2023

Completed
1 year until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2024

Completed
1 year until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2025

Completed
Last Updated

February 23, 2024

Status Verified

August 1, 2023

Enrollment Period

1 year

First QC Date

August 28, 2023

Last Update Submit

February 22, 2024

Conditions

Outcome Measures

Primary Outcomes (1)

  • effect of prone positioning on lung recruitability

    PaO2/FiO2 ratio

    at the end of the supine and prone position

Secondary Outcomes (9)

  • difference in gas exchanges

    at the end of the supine and prone position

  • ventilatory ratio

    at the end of the supine and prone position

  • global impedance-derived End-expiratory lung volume

    at the end of the supine and prone position

  • regional impedance-derived End-expiratory lung volume

    at the end of the supine and prone position

  • tidal volume distribution

    at the end of the supine and prone position

  • +4 more secondary outcomes

Study Arms (2)

Controls

EXPERIMENTAL

Eligible patients will undergo the experimental protocol.

Procedure: supine positionProcedure: prone position

Patients

EXPERIMENTAL

Eligible patients will undergo the experimental protocol.

Procedure: supine positionProcedure: prone position

Interventions

At the end of the PEEP trial (i.e. at PEEP 5 cmH2O), patients will lay in the supine position for 15 minutes arterial blood gases will be performed and then a one-breath derecruitment maneuver (5-second exhalation, respiratory rate \< 8 bpm) from PEEP 5 cmH2O to 0 cmH2O will be conducted to assess baseline functional residual capacity (FRC), defined as the EELI measured at 0 PEEP.

ControlsPatients

After the supine step, each enrolled patient will be placed in the prone position for 1 hour. For safety reasons, enteral feeding will be interrupted 30 minutes before prone positioning and re-established after the study ending. During pronation FiO2 will be increased up to 80% and then gradually decreased to the baseline value within the first 30 minutes of prone positioning. After 30 minutes of PEEP 12 cmH2O (provided that plateau and driving pressures did not exceed 30 cmH2O and 15 cmH2O, respectively) to stabilize lung volumes, the same measurements applied for the supine step will be performed. Any further modifications in the MV settings will be discouraged over the entire course of the study; nonetheless, if needed to achieve the SpO2 target, an increase in FiO2 will be allowed and recorded. In case of sudden worsening of the oxygenation impairment or haemodynamic, 100% FiO2 will be set, and the patient will be promptly positioned in the supine semi-recumbent position.

ControlsPatients

Eligibility Criteria

AgeUp to 18 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • PaO2/FiO2 \< 200 in the supine position, with a standard PEEP of 5 cmH2O;
  • PaCO2 \<45mmHg;
  • Absence of history of chronic respiratory disease or heart failure or congenital heart disease (Modified Ross heart failure classification for children \< II);
  • Not underweight infants/children defined as a low body mass index (BMI) for age;
  • Absence of any contraindication to PP (Appendix 1);
  • Written informed consent of both parents and the legal guardian.

You may not qualify if:

  • Barotrauma;
  • Less than 4 weeks of age (new-born physiology);
  • Exacerbation of asthma;
  • Chest trauma;
  • Pulmonary oedema/haemorrhage;
  • Severe Neutropenia (\<500 WBC/mm3);
  • Haemodynamic instability (Systolic blood pressure \< 5th percentile or mean arterial pressure \< 5th percentile adjusted by age);
  • Lactic acidosis (lactate \>5 mmol/L) and/or clinically diagnosed shock;
  • Metabolic Acidosis (pH \<7.30 with normal- or hypo-carbia);
  • Chronic kidney failure requiring dialysis before PICU admission;
  • Upper gastrointestinal bleeding.
  • Refusal to sign written informed consent of both parents and the legal guardian.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Giorgio Conti

Rome, 00168, Italy

RECRUITING

Related Publications (15)

  • Guerin C, Reignier J, Richard JC, Beuret P, Gacouin A, Boulain T, Mercier E, Badet M, Mercat A, Baudin O, Clavel M, Chatellier D, Jaber S, Rosselli S, Mancebo J, Sirodot M, Hilbert G, Bengler C, Richecoeur J, Gainnier M, Bayle F, Bourdin G, Leray V, Girard R, Baboi L, Ayzac L; PROSEVA Study Group. Prone positioning in severe acute respiratory distress syndrome. N Engl J Med. 2013 Jun 6;368(23):2159-68. doi: 10.1056/NEJMoa1214103. Epub 2013 May 20.

  • Pelosi P, Tubiolo D, Mascheroni D, Vicardi P, Crotti S, Valenza F, Gattinoni L. Effects of the prone position on respiratory mechanics and gas exchange during acute lung injury. Am J Respir Crit Care Med. 1998 Feb;157(2):387-93. doi: 10.1164/ajrccm.157.2.97-04023.

  • Gattinoni L, Taccone P, Carlesso E, Marini JJ. Prone position in acute respiratory distress syndrome. Rationale, indications, and limits. Am J Respir Crit Care Med. 2013 Dec 1;188(11):1286-93. doi: 10.1164/rccm.201308-1532CI.

  • Curley MA, Hibberd PL, Fineman LD, Wypij D, Shih MC, Thompson JE, Grant MJ, Barr FE, Cvijanovich NZ, Sorce L, Luckett PM, Matthay MA, Arnold JH. Effect of prone positioning on clinical outcomes in children with acute lung injury: a randomized controlled trial. JAMA. 2005 Jul 13;294(2):229-37. doi: 10.1001/jama.294.2.229.

  • Lupton-Smith A, Argent A, Rimensberger P, Frerichs I, Morrow B. Prone Positioning Improves Ventilation Homogeneity in Children With Acute Respiratory Distress Syndrome. Pediatr Crit Care Med. 2017 May;18(5):e229-e234. doi: 10.1097/PCC.0000000000001145.

  • Bhandari AP, Nnate DA, Vasanthan L, Konstantinidis M, Thompson J. Positioning for acute respiratory distress in hospitalised infants and children. Cochrane Database Syst Rev. 2022 Jun 6;6(6):CD003645. doi: 10.1002/14651858.CD003645.pub4.

  • Fineman LD, LaBrecque MA, Shih MC, Curley MA. Prone positioning can be safely performed in critically ill infants and children. Pediatr Crit Care Med. 2006 Sep;7(5):413-22. doi: 10.1097/01.PCC.0000235263.86365.B3.

  • Khemani RG, Parvathaneni K, Yehya N, Bhalla AK, Thomas NJ, Newth CJL. Positive End-Expiratory Pressure Lower Than the ARDS Network Protocol Is Associated with Higher Pediatric Acute Respiratory Distress Syndrome Mortality. Am J Respir Crit Care Med. 2018 Jul 1;198(1):77-89. doi: 10.1164/rccm.201707-1404OC.

  • Sinha P, Calfee CS, Beitler JR, Soni N, Ho K, Matthay MA, Kallet RH. Physiologic Analysis and Clinical Performance of the Ventilatory Ratio in Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med. 2019 Feb 1;199(3):333-341. doi: 10.1164/rccm.201804-0692OC.

  • Menga LS, Delle Cese L, Rosa T, Cesarano M, Scarascia R, Michi T, Biasucci DG, Ruggiero E, Dell'Anna AM, Cutuli SL, Tanzarella ES, Pintaudi G, De Pascale G, Sandroni C, Maggiore SM, Grieco DL, Antonelli M. Respective Effects of Helmet Pressure Support, Continuous Positive Airway Pressure, and Nasal High-Flow in Hypoxemic Respiratory Failure: A Randomized Crossover Clinical Trial. Am J Respir Crit Care Med. 2023 May 15;207(10):1310-1323. doi: 10.1164/rccm.202204-0629OC.

  • Riera J, Perez P, Cortes J, Roca O, Masclans JR, Rello J. Effect of high-flow nasal cannula and body position on end-expiratory lung volume: a cohort study using electrical impedance tomography. Respir Care. 2013 Apr;58(4):589-96. doi: 10.4187/respcare.02086.

  • Chen L, Del Sorbo L, Grieco DL, Junhasavasdikul D, Rittayamai N, Soliman I, Sklar MC, Rauseo M, Ferguson ND, Fan E, Richard JM, Brochard L. Potential for Lung Recruitment Estimated by the Recruitment-to-Inflation Ratio in Acute Respiratory Distress Syndrome. A Clinical Trial. Am J Respir Crit Care Med. 2020 Jan 15;201(2):178-187. doi: 10.1164/rccm.201902-0334OC.

  • Bachmann MC, Morais C, Bugedo G, Bruhn A, Morales A, Borges JB, Costa E, Retamal J. Electrical impedance tomography in acute respiratory distress syndrome. Crit Care. 2018 Oct 25;22(1):263. doi: 10.1186/s13054-018-2195-6.

  • Costa EL, Borges JB, Melo A, Suarez-Sipmann F, Toufen C Jr, Bohm SH, Amato MB. Bedside estimation of recruitable alveolar collapse and hyperdistension by electrical impedance tomography. Intensive Care Med. 2009 Jun;35(6):1132-7. doi: 10.1007/s00134-009-1447-y. Epub 2009 Mar 3.

  • Baudin F, Emeriaud G, Essouri S, Beck J, Portefaix A, Javouhey E, Guerin C. Physiological Effect of Prone Position in Children with Severe Bronchiolitis: A Randomized Cross-Over Study (BRONCHIO-DV). J Pediatr. 2019 Feb;205:112-119.e4. doi: 10.1016/j.jpeds.2018.09.066. Epub 2018 Nov 14.

MeSH Terms

Conditions

Respiratory Distress Syndrome

Interventions

Supine PositionProne Position

Condition Hierarchy (Ancestors)

Lung DiseasesRespiratory Tract DiseasesRespiration Disorders

Intervention Hierarchy (Ancestors)

PostureMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
CROSSOVER
Model Details: 2x2 cross-over design
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 28, 2023

First Posted

August 31, 2023

Study Start

September 1, 2023

Primary Completion

September 1, 2024

Study Completion

September 1, 2025

Last Updated

February 23, 2024

Record last verified: 2023-08

Data Sharing

IPD Sharing
Will not share

Locations