Effect of Variable PSV in Acute Lung Injury: Part I and Part II

NCT01683669 | Completed DMC

• 1 other identifier: 91/12
• Study Type: interventional
• Target: 20
• Locations: 1 country
• Sites: 1

Brief Summary

Noisy Pressure Support Ventilation (noisy-PSV) would lead to improved lung function, while preserving respiratory muscle unloading. Basically, noisy PSV differs from other assisted mechanical ventilation modes that may also increase the variability of the respiratory pattern (e.g. proportional assist ventilation) by the fact that the variability does not depend on changes in the patient's inspiratory efforts. The aim of this study is to evaluate the optimal variability for noisy PSV in patients with ALI based on its effects on respiratory mechanics, breathing comfort, gas exchange, and hemodynamics. The investigators hypothesize that noise in pressure support leads to variations in VT that are able to improve lung function and that physiologic variables respond differently to the degree of variability in pressure support

Conditions

Acute Lung Injury (ALI); Acute Distress Respiratory Syndrome (ARDS)

Keywords

ALI; ARDS; Noisy pressure support ventilation

Outcome Measures

Primary Outcomes (1)

• Effect on arterial oxygenation in each setting of variability

  The investigators perform an arterial blood gas and oxygenation is evaluated with PaO2/FiO2 ratio

  after 45 minutes of mechanical ventilation with each level of variable pressure support

Secondary Outcomes (3)

• work of breathing

  every 9 minutes, up to 45 minutes, of mechanical ventilation in each level of variable pressure support

• effects on hemodynamic

  after 45 minutes of mechanical ventilation with each level of variable pressure support

• effect on arterial carbon dioxide

  after 45 minutes of mechanical ventilation with each level of variable pressure support

Study Arms (2)

Noisy-PSV 1

OTHER

different levels of variable pressure support

Other: Noisy-PSV 1

Noisy-PSV 2

OTHER

different levels of variable pressure support

Other: Noisy-PSV 2

Interventions

Noisy-PSV 1 OTHER

Noisy-PSV 1: different levels of variable pressure support (PS) will be randomized: a) PS variability equal to 0%, b) PS variability equal to 45%, c) PS variability equal to 90%.

Noisy-PSV 1

Noisy-PSV 2 OTHER

Noisy-PSV 2 : different levels of variable Pressure Support (PS) will be randomized: a) PS equal to Baseline and variability 0%; b) PS equal to Baseline and variability set in order achieve an increase or decrease of pressure of 5 cmH2O; c) PS equal to Baseline - 5 cmH2O and variability 0%; d) PS equal to Baseline - 5 cmH2O and set in order achieve an increase or decrease of pressure of 5 cmH2O.

Noisy-PSV 2

Eligibility Criteria

• Age: 18 Years - 80 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Age ≥ 18 years
• Intubated/tracheostomized patients in assisted mechanical ventilation
• PaO2/FiO2 100-300, with PEEP ≥ than 5 cmH2O.

You may not qualify if:

• Pregnancy
• History of chronic lung disease (COPD)
• Presence of thoracic drainage

Sponsors & Collaborators

• University of Genova: lead

Study Sites (1)

Intensive Care Medicine Unit - IRCCS San Martino - IST

Genoa, 16132, Italy

Location

Related Publications (16)

• Falk DJ, Deruisseau KC, Van Gammeren DL, Deering MA, Kavazis AN, Powers SK. Mechanical ventilation promotes redox status alterations in the diaphragm. J Appl Physiol (1985). 2006 Oct;101(4):1017-24. doi: 10.1152/japplphysiol.00104.2006. Epub 2006 May 4.

  PMID: 16675618 BACKGROUND

• Esteban A, Anzueto A, Alia I, Gordo F, Apezteguia C, Palizas F, Cide D, Goldwaser R, Soto L, Bugedo G, Rodrigo C, Pimentel J, Raimondi G, Tobin MJ. How is mechanical ventilation employed in the intensive care unit? An international utilization review. Am J Respir Crit Care Med. 2000 May;161(5):1450-8. doi: 10.1164/ajrccm.161.5.9902018.

  PMID: 10806138 BACKGROUND

• Seymour CW, Frazer M, Reilly PM, Fuchs BD. Airway pressure release and biphasic intermittent positive airway pressure ventilation: are they ready for prime time? J Trauma. 2007 May;62(5):1298-308; discussion 1308-9. doi: 10.1097/TA.0b013e31803c562f.

  PMID: 17495742 BACKGROUND

• Neumann P, Wrigge H, Zinserling J, Hinz J, Maripuu E, Andersson LG, Putensen C, Hedenstierna G. Spontaneous breathing affects the spatial ventilation and perfusion distribution during mechanical ventilatory support. Crit Care Med. 2005 May;33(5):1090-5. doi: 10.1097/01.ccm.0000163226.34868.0a.

  PMID: 15891341 BACKGROUND

• Henzler D, Pelosi P, Bensberg R, Dembinski R, Quintel M, Pielen V, Rossaint R, Kuhlen R. Effects of partial ventilatory support modalities on respiratory function in severe hypoxemic lung injury. Crit Care Med. 2006 Jun;34(6):1738-45. doi: 10.1097/01.CCM.0000218809.49883.54.

  PMID: 16625116 BACKGROUND

• Suki B, Alencar AM, Sujeer MK, Lutchen KR, Collins JJ, Andrade JS Jr, Ingenito EP, Zapperi S, Stanley HE. Life-support system benefits from noise. Nature. 1998 May 14;393(6681):127-8. doi: 10.1038/30130. No abstract available.

  PMID: 9603516 BACKGROUND

• Arold SP, Suki B, Alencar AM, Lutchen KR, Ingenito EP. Variable ventilation induces endogenous surfactant release in normal guinea pigs. Am J Physiol Lung Cell Mol Physiol. 2003 Aug;285(2):L370-5. doi: 10.1152/ajplung.00036.2003.

  PMID: 12851212 BACKGROUND

• Boker A, Graham MR, Walley KR, McManus BM, Girling LG, Walker E, Lefevre GR, Mutch WA. Improved arterial oxygenation with biologically variable or fractal ventilation using low tidal volumes in a porcine model of acute respiratory distress syndrome. Am J Respir Crit Care Med. 2002 Feb 15;165(4):456-62. doi: 10.1164/ajrccm.165.4.2108006.

  PMID: 11850336 BACKGROUND

• Mutch WA, Lefevre GR, Cheang MS. Biologic variability in mechanical ventilation in a canine oleic acid lung injury model. Am J Respir Crit Care Med. 2001 Jun;163(7):1756-7. doi: 10.1164/ajrccm.163.7.16372c. No abstract available.

  PMID: 11401900 BACKGROUND

• Lefevre GR, Kowalski SE, Girling LG, Thiessen DB, Mutch WA. Improved arterial oxygenation after oleic acid lung injury in the pig using a computer-controlled mechanical ventilator. Am J Respir Crit Care Med. 1996 Nov;154(5):1567-72. doi: 10.1164/ajrccm.154.5.8912782.

  PMID: 8912782 BACKGROUND

• Mutch WA, Harms S, Lefevre GR, Graham MR, Girling LG, Kowalski SE. Biologically variable ventilation increases arterial oxygenation over that seen with positive end-expiratory pressure alone in a porcine model of acute respiratory distress syndrome. Crit Care Med. 2000 Jul;28(7):2457-64. doi: 10.1097/00003246-200007000-00045.

  PMID: 10921579 BACKGROUND

• McMullen MC, Girling LG, Graham MR, Mutch WA. Biologically variable ventilation improves oxygenation and respiratory mechanics during one-lung ventilation. Anesthesiology. 2006 Jul;105(1):91-7. doi: 10.1097/00000542-200607000-00017.

  PMID: 16809999 BACKGROUND

• Gama de Abreu M, Spieth PM, Pelosi P, Carvalho AR, Walter C, Schreiber-Ferstl A, Aikele P, Neykova B, Hubler M, Koch T. Noisy pressure support ventilation: a pilot study on a new assisted ventilation mode in experimental lung injury. Crit Care Med. 2008 Mar;36(3):818-27. doi: 10.1097/01.CCM.0000299736.55039.3A.

  PMID: 18431269 BACKGROUND

• Spieth PM, Carvalho AR, Guldner A, Pelosi P, Kirichuk O, Koch T, de Abreu MG. Effects of different levels of pressure support variability in experimental lung injury. Anesthesiology. 2009 Feb;110(2):342-50. doi: 10.1097/ALN.0b013e318194d06e.

  PMID: 19194161 BACKGROUND

• Brower RG, Lanken PN, MacIntyre N, Matthay MA, Morris A, Ancukiewicz M, Schoenfeld D, Thompson BT; National Heart, Lung, and Blood Institute ARDS Clinical Trials Network. Higher versus lower positive end-expiratory pressures in patients with the acute respiratory distress syndrome. N Engl J Med. 2004 Jul 22;351(4):327-36. doi: 10.1056/NEJMoa032193.

  PMID: 15269312 BACKGROUND

• Ball L, Sutherasan Y, Fiorito M, Dall'Orto A, Maiello L, Vargas M, Robba C, Brunetti I, D'Antini D, Raimondo P, Huhle R, Schultz MJ, Rocco PRM, Gama de Abreu M, Pelosi P. Effects of Different Levels of Variability and Pressure Support Ventilation on Lung Function in Patients With Mild-Moderate Acute Respiratory Distress Syndrome. Front Physiol. 2021 Oct 22;12:725738. doi: 10.3389/fphys.2021.725738. eCollection 2021.

  PMID: 34744766 DERIVED

MeSH Terms

Conditions

Acute Lung Injury; Respiratory Distress Syndrome

Condition Hierarchy (Ancestors)

Lung Injury; Lung Diseases; Respiratory Tract Diseases; Respiration Disorders

Study Officials

• Paolo Pelosi, Professor

  University of Genoa, Italy

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Full Professor - Chair of Anesthesiology and Intensive Care Medicine. Chief of Intensive Care Medicine

Study Record Dates

• First Submitted: August 29, 2012
• First Posted: September 12, 2012
• Study Start: August 1, 2012
• Primary Completion: December 1, 2016
• Study Completion: December 1, 2016
• Last Updated: May 3, 2017

Record last verified: 2017-05

Locations

IT (1)