Acute Lung Injury (ALI)NCT01683669
Effect of Variable PSV in Acute Lung Injury: Part I and Part II
A study testing Noisy-PSV 1 and Noisy-PSV 2 in people with Acute Lung Injury (ALI) and Acute Distress Respiratory Syndrome (ARDS), run by University of Genova at 1 site in Italy.
Trial 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. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Acute Lung Injury (ALI), Acute Distress Respiratory Syndrome (ARDS)
- What is being tested?
- Noisy-PSV 1 and Noisy-PSV 2
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 siteItaly
- Study dates
- Aug 2012to Dec 2016
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age ≥ 18 years
- Intubated/tracheostomized patients in assisted mechanical ventilation
- PaO2/FiO2 100-300, with PEEP ≥ than 5 cmH2O.
Who cannot join
- Pregnancy
- History of chronic lung disease (COPD)
- Presence of thoracic drainage
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Physiological Research on Variable Pressure Support Ventilation in Patients With Acute Acute Lung Injury: Part I and Part II
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
- Being tested
- Noisy-PSV 1, Noisy-PSV 2
- Keywords
- ALI, ARDS, Noisy pressure support ventilation
- Medical subject headings
- Acute Lung Injury, Respiratory Distress Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Noisy-PSV 1Other
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 2Other
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.
| Study group | Role | What they receive |
|---|---|---|
| Noisy-PSV 1 | Other | different levels of variable pressure support Receives: Other: Noisy-PSV 1 |
| Noisy-PSV 2 | Other | different levels of variable pressure support Receives: Other: Noisy-PSV 2 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Effect on arterial oxygenation in each setting of variability
The investigators perform an arterial blood gas and oxygenation is evaluated with PaO2/FiO2 ratio
Measured: after 45 minutes of mechanical ventilation with each level of variable pressure support
Secondary outcomes (3)
work of breathing
work of breathing will be recorded as pressure-time product (PTP) measured on the esophageal pressure curve.
Measured: every 9 minutes, up to 45 minutes, of mechanical ventilation in each level of variable pressure support
effects on hemodynamic
the investigator will record blood pressure and cardiac output
Measured: after 45 minutes of mechanical ventilation with each level of variable pressure support
effect on arterial carbon dioxide
The investigators perform an arterial blood gas and arterial carbon dioxide is evaluated with PaCO2.
Measured: after 45 minutes of mechanical ventilation with each level of variable pressure support
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Sep 2012 (estimated)
- Study startAug 2012
- Primary completionDec 2016
- Study completionDec 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (16)Papers the sponsor has linked to this study.
- Other trials for Acute Lung Injury (ALI)Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Genova
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Paolo Pelosi, University of Genova
- Investigators
- Paolo Pelosi, Professor, Study director, University of Genoa, Italy
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01683669
- Sponsor's protocol ID
- 91/12
- Status last verified
- May 2017
- First submitted
- 29 Aug 2012
- Last updated
- 3 May 2017
- Results posted
- No
- Data monitoring committee
- Yes
Publications
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.
PubMed 16675618Esteban 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.
PubMed 10806138Seymour 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.
PubMed 17495742Neumann 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.
PubMed 15891341Henzler 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.
PubMed 16625116Suki 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.
PubMed 9603516Arold 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.
PubMed 12851212Boker 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.
PubMed 11850336Mutch 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.
PubMed 11401900Lefevre 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.
PubMed 8912782Mutch 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.
PubMed 10921579McMullen 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.
PubMed 16809999Gama 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.
PubMed 18431269Spieth 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.
PubMed 19194161Brower 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.
PubMed 15269312
Study at a glance
From the registry record, last updated by the sponsor on 3 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Physiological Research on Variable Pressure Support Ventilation in Patients With Acute Acute Lung Injury: Part I and Part II
- ClinicalTrials.gov ID
- NCT01683669
- Acronym / sponsor ID
- 91/12
- Keywords
- ALI, ARDS, Noisy pressure support ventilation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- University of GenovaUniversity, hospital or other
- Study start
- Aug 2012
- Primary completion
- Dec 2016 (actual)
- Study completion
- Dec 2016 (actual)
- First posted
- 12 Sep 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Noisy-PSV 1 | Other | Other: Noisy-PSV 1different levels of variable pressure support |
| Noisy-PSV 2 | Other | Other: Noisy-PSV 2different levels of variable pressure support |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Age ≥ 18 years
- Intubated/tracheostomized patients in assisted mechanical ventilation
- PaO2/FiO2 100-300, with PEEP ≥ than 5 cmH2O.
Key exclusion criteria (3 listed)
- Pregnancy
- History of chronic lung disease (COPD)
- Presence of thoracic drainage
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Noisy-PSV 1Noisy-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%. | Other | Noisy-PSV 1 |
| Noisy-PSV 2Noisy-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. | Other | Noisy-PSV 2 |
Primary outcome
Effect on arterial oxygenation in each setting of variability
Time frame: after 45 minutes of mechanical ventilation with each level of variable pressure support
The investigators perform an arterial blood gas and oxygenation is evaluated with PaO2/FiO2 ratio
3 secondary outcomes
work of breathing
Time frame: every 9 minutes, up to 45 minutes, of mechanical ventilation in each level of variable pressure support
effects on hemodynamic
Time frame: after 45 minutes of mechanical ventilation with each level of variable pressure support
effect on arterial carbon dioxide
Time frame: after 45 minutes of mechanical ventilation with each level of variable pressure support
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 May 2017.
- Background: PubMed 16675618Falk 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.
- Background: PubMed 10806138Esteban 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.
- Background: PubMed 17495742Seymour 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.
- Background: PubMed 15891341Neumann 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.
- Background: PubMed 16625116Henzler 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.
- Background: PubMed 9603516Suki 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.
- Background: PubMed 12851212Arold 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.
- Background: PubMed 11850336Boker 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.
- Background: PubMed 11401900Mutch 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.
- Background: PubMed 8912782Lefevre 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.
- Background: PubMed 10921579Mutch 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.
- Background: PubMed 16809999McMullen 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.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Paolo Pelosi, Professor study director
University of Genoa, Italy
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Noisy-PSV 1 and Noisy-PSV 2 in people with Acute Lung Injury (ALI) and Acute Distress Respiratory Syndrome (ARDS), run by University of Genova at 1 site in Italy.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 May 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Effect on arterial oxygenation in each setting of variability (time frame: after 45 minutes of mechanical ventilation with each level of variable pressure support). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01683669, which also lists 16 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 May 2017.