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Respiratory FailurePTPPoccNCT06040138

Monitoring of Breathing Effort Through Pressure Time Product Measurement Using Airway Occlusion Pressure

An observational study of Respiratory Failure and Weaning Failure, run by Hospital Italiano de Buenos Aires at 4 sites in Argentina.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

Mechanical ventilation is essential in the management of patients in Intensive Care. The approach to patients with prolonged weaning is challenging.In this context, it is vital to implement "diaphragmatic protection" strategies, which consist of programming the level of ventilator assistance focused on sustaining the… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Respiratory Failure, Weaning Failure
What is being tested?
End expiratory occlusion maneuver
How many people
50 participants
Where
4 sitesArgentina
Study dates
1 Oct 2023to 1 Jul 2024
Phase
Observational
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 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Patients over 18 years of age with prolonged weaning from mechanical ventilation, who are in the intensive care units of the following hospitals: Hospital Italiano, Hospital Británico, Centro de Educación Médica e Investigaciones Clínicas 'Norberto Quirno' and Sanatorio Anchorena de San Martín, will be included

Who may be able to join

  • Patients with mechanical ventilation, who failed 3 or more spontaneous breathing trials
  • Esophageal balloon placed
  • Who can trigger the ventilator
  • With hemodynamic stability
  • with P/F ratio above 150

Who cannot join

  • under 18 years old of age
  • pregnancy
  • do not resuscitate order or expected poor short term prognosis
  • refuse to sign the informed consent

Trial locations and contacts

4 sites in 1 country.

Argentina4 sites, 4 recruiting
  • Centro de Educación Médica e Investigaciones Clínicas "Norberto Quirno"

    Buenos Aires

    Mariano Setten, RT, + 54 11 5299-0100, marianosetten@gmail.com

    Recruiting
  • Hospital Británico

    Buenos Aires

    Emiliano Gogniat, RT, +54 11 4309-6400, emilianogogniat@gmail.com

    Gustavo Plotnikow, RT, +54 11 4309-6400, gplotnikow@gmail.com

    Recruiting
  • Hospital Italiano de Buenos Aires

    Buenos Aires

    Emilio Steinberg, RT, +54 11 4959-0200, emilio.steinberg@hospitalitaliano.org.ar

    Recruiting
  • Sanatorio Anchorena San Martín

    Buenos Aires

    Javier Dorado, RT, +54 0800-222-7276, javierhdorado@gmail.com

    Recruiting

Other trials in Argentina

About this study

Mechanical ventilation is essential in the management of patients in Intensive Care. The approach to patients with prolonged weaning is challenging.In this context, it is vital to implement "diaphragmatic protection" strategies, which consist of programming the level of ventilator assistance focused on sustaining the muscular effort within an objective range. The reference method for measuring inspiratory effort is the Pressure-Time Product (PTP) of the esophagus.

Recently, Bertoni et al. proposed the measurement of Occlusion Pressure as a non-invasive method, without the need to assess esophageal pressure, to estimate the magnitude of the effort and program assistance. Although it is a validated measurement for quantifying effort, it does not consider the duration of the effort performed by the patient, as well as the respiratory rate, two fundamental variables in terms of tolerance to the load. Therefore, the investigators propose the following study that will seek to validate the measurement of PTP in from the Occlusion Pressure, but considering inspiratory time and respiratory rate to obtain PTP per breath and per minute.

Read the detailed description

Mechanical ventilation (MV) is an essential support in the management of patients in Intensive Care Units (ICU). According to international epidemiological studies, around 40% of patients admitted to ICU require ventilatory support.

International epidemiological data indicate that just over 55% of ICU patients are weaned from MV prematurely, and that approximately 20% experience difficult and prolonged weaning. In Argentina, our country, there are reports that this population amounts to 49.3%. One common denominator in the literature, international and national, regarding this section, is that such patients have more days of MV, ICU and hospital stay.

During prolonged weaning, monitoring of muscular effort becomes essential: both excessive and deficient efforts usually lead to diaphragmatic dysfunction. The former predisposes to fatigue, while the latter to atrophy. In this context, it is vital to implement "diaphragmatic protection" strategies, which consist of programming the level of assistance with a focus on muscular effort or muscular pressure (PMUS) to keep it within a target range.

The reference method for measuring inspiratory effort is the Pressure-Time Product of the esophagus (PTPESO), which involves the magnitude of PMUS measured through the change in esophageal pressure (PES) generated during inspiration, its duration, and respiratory rate (RR). For patients on partial ventilatory support, a PTP of 50 to 150 cmH2O/sec/min is recommended. Thus, PES becomes an everyday and reference tool for the management of patients with prolonged weaning from MV.

Recently, Bertoni et al. proposed measuring Occlusion Pressure (POCC) as a non-invasive method, i.e., without the need to evaluate PES, to estimate the magnitude of PMUS and program assistance in PSV. By means of a tele-expiratory occlusion maneuver of the airway, the maximum negative deflection of the signal during the patient's inspiration is quantified. This maneuver is called POCC. Then, through a simple multiplication by a constant, the value of PMUS in one cycle is obtained. Given the ease of measurement and its non-invasive nature, this technique has taken a leading role in the approach to patients during partial support at present.

Although the POCC is validated to quantify breathing effort, it has significant weaknesses. Some of these are that it only values the maximum deflection in an average of efforts, does not consider the time that the effort made by the patient lasts, nor the respiratory rate, two fundamental variables in terms of tolerance to the load (duration of contraction and frequency of repetition).

In this context, having a method that can estimate PTPESO non-invasively would be extremely useful to titrate the level of assistance in the framework of diaphragmatic protection strategies in patients with difficulties in being weaned from MV.

Therefore, the investigators propose the following study that will validate the measurement of PTPESO based on POCC, but considering the inspiratory time and respiratory rate to obtain PTP per breath and per minute. These variables will be called PTPPOCC-br and PTPPOCC-min, respectively.

Being tested
End expiratory occlusion maneuver
Keywords
mechanical ventilation, weaning, breathing effort, occlusion pressure, pressure time product, pressure support ventilation
Medical subject headings
Respiratory Insufficiency, Respiratory Aspiration

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • End expiratory occlusion maneuverDiagnostic test

    An end expiratory occlusion maneuver will be performed during pressure support ventilation in patients with prolonged weaning.

Study groups in NCT06040138
Study groupRoleWhat they receive
Patients with prolonged weaningPatients who have failed more than 3 spontaneous breathing trials, in pressure support ventilation, with hemodynamic and metabolic stability, and a regular and stable ventilatory pattern.
Receives: Diagnostic Test: End expiratory occlusion maneuver

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Airway Occlusion Pressure

    An inspiratory pressure will be set to obtain a muscular pressure value of 8 to 12 cmH2O. This phase will be called PSV100%. After 15 minutes, the level of assistance will be modified by 50%, up or down, according to the result of the randomization, and vice versa, always considering the initial value. Each of these phases will be called PSV150% and PSV50% respectively, and will last 15 minutes. During the last 3 minutes, 3 end-expiratory occlusion at a rate of 1 maneuver per minute will be performed, in order to obtain the airway Occlusion Pressure.

    Measured: At the end of the study, estimated in July 2024

Secondary outcomes (1)
  1. Esophageal Pressure Time product per breath (PTPESOF-br) and per minute (PTPESOF-min)

    Both the PTPESOF - br and the PTPESOF - min will be obtained directly from FluxReview, which calculates it automatically. To do this, the operator must select the desired breaths and load the value of the chest compliance (CCW) as input. For the correct estimation of this parameter, the value derived from the estimated vital capacity of the patient will be used, a method described by Mauri et al. and used in similar studies. [16] Segments of the PES signal in which erratic values or with artifacts are present will be excluded from the analysis.

    Measured: At the end of the study, estimated in July 2024

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 Sep 2023
  2. Study start1 Oct 2023
  3. Primary completion1 Jul 2024 (estimated)
  4. Study completion1 Jul 2024 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
50 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06040138
Sponsor's protocol ID
6810
Acronym
PTPPocc
Status last verified
Mar 2024
First submitted
5 Sep 2023
Last updated
12 Mar 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Beduneau G, Pham T, Schortgen F, Piquilloud L, Zogheib E, Jonas M, Grelon F, Runge I, Nicolas Terzi, Grange S, Barberet G, Guitard PG, Frat JP, Constan A, Chretien JM, Mancebo J, Mercat A, Richard JM, Brochard L; WIND (Weaning according to a New Definition) Study Group and the REVA (Reseau Europeen de Recherche en Ventilation Artificielle) Network double dagger. Epidemiology of Weaning Outcome according to a New Definition. The WIND Study. Am J Respir Crit Care Med. 2017 Mar 15;195(6):772-783. doi: 10.1164/rccm.201602-0320OC.

    PubMed 27626706
  • Bertoni M, Telias I, Urner M, Long M, Del Sorbo L, Fan E, Sinderby C, Beck J, Liu L, Qiu H, Wong J, Slutsky AS, Ferguson ND, Brochard LJ, Goligher EC. A novel non-invasive method to detect excessively high respiratory effort and dynamic transpulmonary driving pressure during mechanical ventilation. Crit Care. 2019 Nov 6;23(1):346. doi: 10.1186/s13054-019-2617-0.

    PubMed 31694692
  • Boles JM, Bion J, Connors A, Herridge M, Marsh B, Melot C, Pearl R, Silverman H, Stanchina M, Vieillard-Baron A, Welte T. Weaning from mechanical ventilation. Eur Respir J. 2007 May;29(5):1033-56. doi: 10.1183/09031936.00010206.

    PubMed 17470624
  • Brault C, Mancebo J, Suarez Montero JC, Bentall T, Burns KEA, Piraino T, Lellouche F, Bouchard PA, Charbonney E, Carteaux G, Maraffi T, Beduneau G, Mercat A, Skrobik Y, Zuo F, Lafreniere-Roula M, Thorpe K, Brochard L, Bosma KJ. The PROMIZING trial enrollment algorithm for early identification of patients ready for unassisted breathing. Crit Care. 2022 Jun 23;26(1):188. doi: 10.1186/s13054-022-04063-4.

    PubMed 35739553
  • Brochard L, Martin GS, Blanch L, Pelosi P, Belda FJ, Jubran A, Gattinoni L, Mancebo J, Ranieri VM, Richard JC, Gommers D, Vieillard-Baron A, Pesenti A, Jaber S, Stenqvist O, Vincent JL. Clinical review: Respiratory monitoring in the ICU - a consensus of 16. Crit Care. 2012 Dec 12;16(2):219. doi: 10.1186/cc11146.

    PubMed 22546221
  • Collett PW, Perry C, Engel LA. Pressure-time product, flow, and oxygen cost of resistive breathing in humans. J Appl Physiol (1985). 1985 Apr;58(4):1263-72. doi: 10.1152/jappl.1985.58.4.1263.

    PubMed 3988680
  • Combes A, Costa MA, Trouillet JL, Baudot J, Mokhtari M, Gibert C, Chastre J. Morbidity, mortality, and quality-of-life outcomes of patients requiring >or=14 days of mechanical ventilation. Crit Care Med. 2003 May;31(5):1373-81. doi: 10.1097/01.CCM.0000065188.87029.C3.

    PubMed 12771605
  • Devlin JW, Skrobik Y, Gelinas C, Needham DM, Slooter AJC, Pandharipande PP, Watson PL, Weinhouse GL, Nunnally ME, Rochwerg B, Balas MC, van den Boogaard M, Bosma KJ, Brummel NE, Chanques G, Denehy L, Drouot X, Fraser GL, Harris JE, Joffe AM, Kho ME, Kress JP, Lanphere JA, McKinley S, Neufeld KJ, Pisani MA, Payen JF, Pun BT, Puntillo KA, Riker RR, Robinson BRH, Shehabi Y, Szumita PM, Winkelman C, Centofanti JE, Price C, Nikayin S, Misak CJ, Flood PD, Kiedrowski K, Alhazzani W. Clinical Practice Guidelines for the Prevention and Management of Pain, Agitation/Sedation, Delirium, Immobility, and Sleep Disruption in Adult Patients in the ICU. Crit Care Med. 2018 Sep;46(9):e825-e873. doi: 10.1097/CCM.0000000000003299.

    PubMed 30113379
  • Dianti J, Fard S, Wong J, Chan TCY, Del Sorbo L, Fan E, Amato MBP, Granton J, Burry L, Reid WD, Zhang B, Ratano D, Keshavjee S, Slutsky AS, Brochard LJ, Ferguson ND, Goligher EC. Strategies for lung- and diaphragm-protective ventilation in acute hypoxemic respiratory failure: a physiological trial. Crit Care. 2022 Aug 29;26(1):259. doi: 10.1186/s13054-022-04123-9.

    PubMed 36038890
  • Dorado JH, Navarro E, Plotnikow GA, Gogniat E, Accoce M; EpVAr Study Group. Epidemiology of Weaning From Invasive Mechanical Ventilation in Subjects With COVID-19. Respir Care. 2023 Jan;68(1):101-109. doi: 10.4187/respcare.09925. Epub 2022 Nov 15.

    PubMed 36379638
  • Esteban A, Frutos-Vivar F, Muriel A, Ferguson ND, Penuelas O, Abraira V, Raymondos K, Rios F, Nin N, Apezteguia C, Violi DA, Thille AW, Brochard L, Gonzalez M, Villagomez AJ, Hurtado J, Davies AR, Du B, Maggiore SM, Pelosi P, Soto L, Tomicic V, D'Empaire G, Matamis D, Abroug F, Moreno RP, Soares MA, Arabi Y, Sandi F, Jibaja M, Amin P, Koh Y, Kuiper MA, Bulow HH, Zeggwagh AA, Anzueto A. Evolution of mortality over time in patients receiving mechanical ventilation. Am J Respir Crit Care Med. 2013 Jul 15;188(2):220-30. doi: 10.1164/rccm.201212-2169OC.

    PubMed 23631814
  • Goligher EC, Dres M, Patel BK, Sahetya SK, Beitler JR, Telias I, Yoshida T, Vaporidi K, Grieco DL, Schepens T, Grasselli G, Spadaro S, Dianti J, Amato M, Bellani G, Demoule A, Fan E, Ferguson ND, Georgopoulos D, Guerin C, Khemani RG, Laghi F, Mercat A, Mojoli F, Ottenheijm CAC, Jaber S, Heunks L, Mancebo J, Mauri T, Pesenti A, Brochard L. Lung- and Diaphragm-Protective Ventilation. Am J Respir Crit Care Med. 2020 Oct 1;202(7):950-961. doi: 10.1164/rccm.202003-0655CP.

    PubMed 32516052
  • Jonkman AH, Rauseo M, Carteaux G, Telias I, Sklar MC, Heunks L, Brochard LJ. Proportional modes of ventilation: technology to assist physiology. Intensive Care Med. 2020 Dec;46(12):2301-2313. doi: 10.1007/s00134-020-06206-z. Epub 2020 Aug 11.

    PubMed 32780167
  • Kress JP, Pohlman AS, O'Connor MF, Hall JB. Daily interruption of sedative infusions in critically ill patients undergoing mechanical ventilation. N Engl J Med. 2000 May 18;342(20):1471-7. doi: 10.1056/NEJM200005183422002.

    PubMed 10816184
  • Mauri T, Yoshida T, Bellani G, Goligher EC, Carteaux G, Rittayamai N, Mojoli F, Chiumello D, Piquilloud L, Grasso S, Jubran A, Laghi F, Magder S, Pesenti A, Loring S, Gattinoni L, Talmor D, Blanch L, Amato M, Chen L, Brochard L, Mancebo J; PLeUral pressure working Group (PLUG-Acute Respiratory Failure section of the European Society of Intensive Care Medicine). Esophageal and transpulmonary pressure in the clinical setting: meaning, usefulness and perspectives. Intensive Care Med. 2016 Sep;42(9):1360-73. doi: 10.1007/s00134-016-4400-x. Epub 2016 Jun 22.

    PubMed 27334266

Questions about this trial

What is this clinical trial studying?

An observational study of Respiratory Failure and Weaning Failure, run by Hospital Italiano de Buenos Aires at 4 sites in Argentina.

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 5 inclusion and 4 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: status not confirmed, as of the sponsor's last update on 12 Mar 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 4 sites in Argentina. 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?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Emilio Steinberg, RT (+11 64977663, emilio.steinberg@hospitalitaliano.org.ar), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Airway Occlusion Pressure (time frame: At the end of the study, estimated in July 2024). 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 NCT06040138, which also lists 18 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 12 Mar 2024.

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