SurgeryREPEATNCT03937375
Re-Evaluation of the Effects of High PEEP During General Anesthesia For Surgery (REPEAT)
An observational study of Surgery and Mechanical Ventilation Complication, run by Hospital Israelita Albert Einstein at 3 sites in 3 countries.
Trial summary
Aiming to understand the isolated impact of high PEEP in patients undergoing mechanical ventilation for general anesthesia for surgery, three appropriately sized international multicentre randomized controlled trials have been performed over recent years: the 'PROtective Ventilation using HIgh versus LOw PEEP trial… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Surgery, Mechanical Ventilation Complication, Pulmonary Complication
- What is being tested?
- High PEEP and Low PEEP
- Type of treatment
- Lifestyle or therapy programme
- How many people
- 3,837 participants
- Where
- 3 sitesin 3 countries
- Study dates
- 1 Jan 2019to 30 Jan 2020
- 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: Adult patients undergoing mechanical ventilation for general anesthesia for surgery.
Who may be able to join
- Enrolled into one of the three studies (PROVHILO, iPROVE or PROBESE) to either high PEEP or low PEEP
Who cannot join
None listed.
Trial locations and contacts
3 sites in 3 countries.
3 sites in 3 countries
Germany1 site
University Hospital Carl Gustav Carus, Technische Universität Dresden
Dresden
About this study
Official title: Re-Evaluation of the Effects of High PEEP During General Anesthesia For Surgery - An Individual Patient Data Meta-Analysis of PROVHILO, iPROVE and PROBESE
Aiming to understand the isolated impact of high PEEP in patients undergoing mechanical ventilation for general anesthesia for surgery, three appropriately sized international multicentre randomized controlled trials have been performed over recent years: the 'PROtective Ventilation using HIgh versus LOw PEEP trial (PROVHILO), the 'individualized PeRioperative Open-lung Ventilation trial' (iPROVE), and the 'Protective intraoperative ventilation with higher versus lower levels of positive end-expiratory pressure in obese patients trial' (PROBESE). These three trials had several similarities in key areas of their study protocols, inclusion and exclusion criteria, and collected data, and even the primary and secondary outcomes. Of note, the three trials combined high PEEP with recruitment manoeuvres. This allows an individual patient data meta-analysis.
- Being tested
- High PEEP, Low PEEP
- Keywords
- Surgery, Mechanical ventilation, PEEP, Postoperative pulmonary complications, Individual patient data meta-analysis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
High PEEPBehavioural
Use of high levels of PEEP combined with recruitment maneuvers and low tidal volume ventilation during general anesthesia
Low PEEPBehavioural
Use of low levels of PEEP without recruitment maneuvers and low tidal volume ventilation during general anesthesia
| Study group | Role | What they receive |
|---|---|---|
| High PEEP | Use of high levels of PEEP with recruitment maneuvers Receives: Behavioral: High PEEP | |
| Low PEEP | Use of low levels of PEEP without recruitment maneuvers Receives: Behavioral: Low PEEP |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incidence of postoperative pulmonary complications
Collapsed composite of complications developing within the first seven postoperative days, including: Mild respiratory failure; or Severe respiratory failure; or Acute Respiratory Distress Syndrome (ARDS); or Pulmonary infection; or Pleural effusion; or Atelectasis; or Pneumothorax; or Bronchospasm.
Measured: Until day seven or hospital discharge, whichever comes first
Secondary outcomes (8)
Incidence of severe postoperative pulmonary complications
Collapsed composite of complications developing within the first seven postoperative days, including: Severe respiratory failure; or Acute Respiratory Distress Syndrome (ARDS); or Pulmonary infection; or Pleural effusion; or Atelectasis; or Pneumothorax; or Bronchospasm
Measured: Until day seven or hospital discharge, whichever comes first
Incidence of extrapulmonary pulmonary complications
Collapsed composite of complications developing within the first seven postoperative days, including: Systemic Response Inflammatory Syndrome; or Sepsis; or Septic Shock; or Acute Kidney Injury.
Measured: Until day seven or hospital discharge, whichever comes first
Incidence of intraoperative complications
Defined as intraoperative hypotension; or need for rescue for desaturations; or need for vasoactive drugs.
Measured: Intraoperatively
Incidence of intensive care unit admission
Incidence of intensive care unit admission during hospital stay
Measured: Until hospital discharge, death or 100 days, whichever comes first
Hospital length of stay
Duration of hospital length of stay in days
Measured: Until hospital discharge, death or 100 days, whichever comes first
Incidence of 7-day mortality
Mortality during the first seven days of hospitalization
Measured: Until day seven or hospital discharge, whichever comes first
Incidence of in-hospital mortality
Mortality during hospitalization
Measured: Until hospital discharge, death or 100 days, whichever comes first
Incidence of major postoperative complications
Collapsed composite of complications developing within the first seven postoperative combining severe postoperative pulmonary complications, sepsis, septic shock and/or acute kidney injury)
Measured: Until day seven or hospital discharge, whichever comes first
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 May 2019
- Study start1 Jan 2019
- Primary completion1 Dec 2019
- Study completion30 Jan 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for SurgeryStudies 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 3,837 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hospital Israelita Albert Einstein
- Sponsor type
- University, hospital or other
- Collaborators
- Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA), University Hospital Carl Gustav Carus, Hospital Clínico Universitario de Valencia
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03937375
- Sponsor's protocol ID
- REPEAT
- Acronym
- REPEAT
- Status last verified
- Apr 2019
- First submitted
- 2 May 2019
- Last updated
- 10 Jan 2024
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: The harmonized dataset will be available after the publication of the main results and under request to the steering committee
Publications
Hemmes SN, Severgnini P, Jaber S, Canet J, Wrigge H, Hiesmayr M, Tschernko EM, Hollmann MW, Binnekade JM, Hedenstierna G, Putensen C, de Abreu MG, Pelosi P, Schultz MJ. Rationale and study design of PROVHILO - a worldwide multicenter randomized controlled trial on protective ventilation during general anesthesia for open abdominal surgery. Trials. 2011 May 6;12:111. doi: 10.1186/1745-6215-12-111.
PubMed 21548927PROVE Network Investigators for the Clinical Trial Network of the European Society of Anaesthesiology; Hemmes SN, Gama de Abreu M, Pelosi P, Schultz MJ. High versus low positive end-expiratory pressure during general anaesthesia for open abdominal surgery (PROVHILO trial): a multicentre randomised controlled trial. Lancet. 2014 Aug 9;384(9942):495-503. doi: 10.1016/S0140-6736(14)60416-5. Epub 2014 Jun 2.
PubMed 24894577Ferrando C, Soro M, Canet J, Unzueta MC, Suarez F, Librero J, Peiro S, Llombart A, Delgado C, Leon I, Rovira L, Ramasco F, Granell M, Aldecoa C, Diaz O, Balust J, Garutti I, de la Matta M, Pensado A, Gonzalez R, Duran ME, Gallego L, Del Valle SG, Redondo FJ, Diaz P, Pestana D, Rodriguez A, Aguirre J, Garcia JM, Garcia J, Espinosa E, Charco P, Navarro J, Rodriguez C, Tusman G, Belda FJ; iPROVE investigators (Appendices 1 and 2). Rationale and study design for an individualized perioperative open lung ventilatory strategy (iPROVE): study protocol for a randomized controlled trial. Trials. 2015 Apr 27;16:193. doi: 10.1186/s13063-015-0694-1.
PubMed 25927183Ferrando C, Soro M, Unzueta C, Suarez-Sipmann F, Canet J, Librero J, Pozo N, Peiro S, Llombart A, Leon I, India I, Aldecoa C, Diaz-Cambronero O, Pestana D, Redondo FJ, Garutti I, Balust J, Garcia JI, Ibanez M, Granell M, Rodriguez A, Gallego L, de la Matta M, Gonzalez R, Brunelli A, Garcia J, Rovira L, Barrios F, Torres V, Hernandez S, Gracia E, Gine M, Garcia M, Garcia N, Miguel L, Sanchez S, Pineiro P, Pujol R, Garcia-Del-Valle S, Valdivia J, Hernandez MJ, Padron O, Colas A, Puig J, Azparren G, Tusman G, Villar J, Belda J; Individualized PeRioperative Open-lung VEntilation (iPROVE) Network. Individualised perioperative open-lung approach versus standard protective ventilation in abdominal surgery (iPROVE): a randomised controlled trial. Lancet Respir Med. 2018 Mar;6(3):193-203. doi: 10.1016/S2213-2600(18)30024-9. Epub 2018 Jan 19.
PubMed 29371130Bluth T, Teichmann R, Kiss T, Bobek I, Canet J, Cinnella G, De Baerdemaeker L, Gregoretti C, Hedenstierna G, Hemmes SN, Hiesmayr M, Hollmann MW, Jaber S, Laffey JG, Licker MJ, Markstaller K, Matot I, Muller G, Mills GH, Mulier JP, Putensen C, Rossaint R, Schmitt J, Senturk M, Serpa Neto A, Severgnini P, Sprung J, Vidal Melo MF, Wrigge H, Schultz MJ, Pelosi P, Gama de Abreu M; PROBESE investigators; PROtective VEntilation Network (PROVEnet); Clinical Trial Network of the European Society of Anaesthesiology (ESA). Protective intraoperative ventilation with higher versus lower levels of positive end-expiratory pressure in obese patients (PROBESE): study protocol for a randomized controlled trial. Trials. 2017 Apr 28;18(1):202. doi: 10.1186/s13063-017-1929-0.
PubMed 28454590Serpa Neto A, Campos NS, Bluth T, Hemmes SNT, Ferrando C, Librero J, Soro M, Ball L, Mazzinari G, de Abreu MG, Schultz MJ; for REPEAT on behalf of the PROVHILO , iPROVE and PROBESE Investigators, and the PROVE Network investigators. Win Ratio approach for the composite outcome of postoperative pulmonary complications: Secondary analysis of a harmonised and pooled database of three randomised clinical trials. Eur J Anaesthesiol. 2025 Apr 1;42(4):340-346. doi: 10.1097/EJA.0000000000002116. Epub 2024 Dec 18.
PubMed 39698861Mazzinari G, Zampieri FG, Ball L, Campos NS, Bluth T, Hemmes SNT, Ferrando C, Librero J, Soro M, Pelosi P, Gama de Abreu M, Schultz MJ, Serpa Neto A; PROVHILO investigators; iPROVE investigators; PROBESE investigators; PROVE network investigators. Effect of intraoperative PEEP with recruitment maneuvers on the occurrence of postoperative pulmonary complications during general anesthesia--protocol for Bayesian analysis of three randomized clinical trials of intraoperative ventilation. F1000Res. 2023 Jun 23;11:1090. doi: 10.12688/f1000research.125861.2. eCollection 2022.
PubMed 37234075Campos NS, Bluth T, Hemmes SNT, Librero J, Pozo N, Ferrando C, Ball L, Mazzinari G, Pelosi P, Gama de Abreu M, Schultz MJ, Serpa Neto A; REPEAT; investigators for the PROVHILO study; iPROVE study; PROBESE study investigators; PROVE Network. Intraoperative positive end-expiratory pressure and postoperative pulmonary complications: a patient-level meta-analysis of three randomised clinical trials. Br J Anaesth. 2022 Jun;128(6):1040-1051. doi: 10.1016/j.bja.2022.02.039. Epub 2022 Apr 15.
PubMed 35431038
Study at a glance
From the registry record, last updated by the sponsor on 10 Jan 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Re-Evaluation of the Effects of High PEEP During General Anesthesia For Surgery - An Individual Patient Data Meta-Analysis of PROVHILO, iPROVE and PROBESE
- ClinicalTrials.gov ID
- NCT03937375
- Acronym / sponsor ID
- REPEAT / REPEAT
- Keywords
- Surgery, Mechanical ventilation, PEEP, Postoperative pulmonary complications, Individual patient data meta-analysis
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 3,837 participants (actual)
- Lead sponsor
- Hospital Israelita Albert EinsteinUniversity, hospital or other
- Collaborators
- Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA), University Hospital Carl Gustav Carus, Hospital Clínico Universitario de Valencia
- Study start
- 1 Jan 2019 (actual)
- Primary completion
- 1 Dec 2019 (actual)
- Study completion
- 30 Jan 2020 (actual)
- First posted
- 3 May 2019 (actual)
- 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.
Aiming to understand the isolated impact of high PEEP in patients undergoing mechanical ventilation for general anesthesia for surgery, three appropriately sized international multicentre randomized controlled trials have been performed over recent years: the 'PROtective Ventilation using HIgh versus LOw PEEP trial (PROVHILO), the 'individualized PeRioperative Open-lung Ventilation trial' (iPROVE), and the 'Protective intraoperative ventilation with higher versus lower levels of positive end-expiratory pressure in obese patients trial' (PROBESE). These three trials had several similarities in key areas of their study protocols, inclusion and exclusion criteria, and collected data, and even the primary and secondary outcomes. Of note, the three trials combined high PEEP with recruitment manoeuvres. This allows an individual patient data meta-analysis.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| High PEEP | – | Behavioral: High PEEPUse of high levels of PEEP with recruitment maneuvers |
| Low PEEP | – | Behavioral: Low PEEPUse of low levels of PEEP without recruitment maneuvers |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Adult patients undergoing mechanical ventilation for general anesthesia for surgery.
Key inclusion criteria (1 listed)
- Enrolled into one of the three studies (PROVHILO, iPROVE or PROBESE) to either high PEEP or low PEEP
Key exclusion criteria (0 listed)
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 |
|---|---|---|
| High PEEPUse of high levels of PEEP combined with recruitment maneuvers and low tidal volume ventilation during general anesthesia | Behavioural | High PEEP |
| Low PEEPUse of low levels of PEEP without recruitment maneuvers and low tidal volume ventilation during general anesthesia | Behavioural | Low PEEP |
Primary outcome
Incidence of postoperative pulmonary complications
Time frame: Until day seven or hospital discharge, whichever comes first
Collapsed composite of complications developing within the first seven postoperative days, including: Mild respiratory failure; or Severe respiratory failure; or Acute Respiratory Distress Syndrome (ARDS); or Pulmonary infection; or Pleural effusion; or Atelectasis; or Pneumothorax; or Bronchospasm.
8 secondary outcomes
Incidence of severe postoperative pulmonary complications
Time frame: Until day seven or hospital discharge, whichever comes first
Incidence of extrapulmonary pulmonary complications
Time frame: Until day seven or hospital discharge, whichever comes first
Incidence of intraoperative complications
Time frame: Intraoperatively
Incidence of intensive care unit admission
Time frame: Until hospital discharge, death or 100 days, whichever comes first
Hospital length of stay
Time frame: Until hospital discharge, death or 100 days, whichever comes first
Incidence of 7-day mortality
Time frame: Until day seven or hospital discharge, whichever comes first
Incidence of in-hospital mortality
Time frame: Until hospital discharge, death or 100 days, whichever comes first
Incidence of major postoperative complications
Time frame: Until day seven or hospital discharge, whichever comes first
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 10 Jan 2024.
- Background: PubMed 21548927Hemmes SN, Severgnini P, Jaber S, Canet J, Wrigge H, Hiesmayr M, Tschernko EM, Hollmann MW, Binnekade JM, Hedenstierna G, Putensen C, de Abreu MG, Pelosi P, Schultz MJ. Rationale and study design of PROVHILO - a worldwide multicenter randomized controlled trial on protective ventilation during general anesthesia for open abdominal surgery. Trials. 2011 May 6;12:111. doi: 10.1186/1745-6215-12-111.
- Background: PubMed 24894577PROVE Network Investigators for the Clinical Trial Network of the European Society of Anaesthesiology; Hemmes SN, Gama de Abreu M, Pelosi P, Schultz MJ. High versus low positive end-expiratory pressure during general anaesthesia for open abdominal surgery (PROVHILO trial): a multicentre randomised controlled trial. Lancet. 2014 Aug 9;384(9942):495-503. doi: 10.1016/S0140-6736(14)60416-5. Epub 2014 Jun 2.
- Background: PubMed 25927183Ferrando C, Soro M, Canet J, Unzueta MC, Suarez F, Librero J, Peiro S, Llombart A, Delgado C, Leon I, Rovira L, Ramasco F, Granell M, Aldecoa C, Diaz O, Balust J, Garutti I, de la Matta M, Pensado A, Gonzalez R, Duran ME, Gallego L, Del Valle SG, Redondo FJ, Diaz P, Pestana D, Rodriguez A, Aguirre J, Garcia JM, Garcia J, Espinosa E, Charco P, Navarro J, Rodriguez C, Tusman G, Belda FJ; iPROVE investigators (Appendices 1 and 2). Rationale and study design for an individualized perioperative open lung ventilatory strategy (iPROVE): study protocol for a randomized controlled trial. Trials. 2015 Apr 27;16:193. doi: 10.1186/s13063-015-0694-1.
- Background: PubMed 29371130Ferrando C, Soro M, Unzueta C, Suarez-Sipmann F, Canet J, Librero J, Pozo N, Peiro S, Llombart A, Leon I, India I, Aldecoa C, Diaz-Cambronero O, Pestana D, Redondo FJ, Garutti I, Balust J, Garcia JI, Ibanez M, Granell M, Rodriguez A, Gallego L, de la Matta M, Gonzalez R, Brunelli A, Garcia J, Rovira L, Barrios F, Torres V, Hernandez S, Gracia E, Gine M, Garcia M, Garcia N, Miguel L, Sanchez S, Pineiro P, Pujol R, Garcia-Del-Valle S, Valdivia J, Hernandez MJ, Padron O, Colas A, Puig J, Azparren G, Tusman G, Villar J, Belda J; Individualized PeRioperative Open-lung VEntilation (iPROVE) Network. Individualised perioperative open-lung approach versus standard protective ventilation in abdominal surgery (iPROVE): a randomised controlled trial. Lancet Respir Med. 2018 Mar;6(3):193-203. doi: 10.1016/S2213-2600(18)30024-9. Epub 2018 Jan 19.
- Background: PubMed 28454590Bluth T, Teichmann R, Kiss T, Bobek I, Canet J, Cinnella G, De Baerdemaeker L, Gregoretti C, Hedenstierna G, Hemmes SN, Hiesmayr M, Hollmann MW, Jaber S, Laffey JG, Licker MJ, Markstaller K, Matot I, Muller G, Mills GH, Mulier JP, Putensen C, Rossaint R, Schmitt J, Senturk M, Serpa Neto A, Severgnini P, Sprung J, Vidal Melo MF, Wrigge H, Schultz MJ, Pelosi P, Gama de Abreu M; PROBESE investigators; PROtective VEntilation Network (PROVEnet); Clinical Trial Network of the European Society of Anaesthesiology (ESA). Protective intraoperative ventilation with higher versus lower levels of positive end-expiratory pressure in obese patients (PROBESE): study protocol for a randomized controlled trial. Trials. 2017 Apr 28;18(1):202. doi: 10.1186/s13063-017-1929-0.
- Derived from this study: PubMed 39698861Serpa Neto A, Campos NS, Bluth T, Hemmes SNT, Ferrando C, Librero J, Soro M, Ball L, Mazzinari G, de Abreu MG, Schultz MJ; for REPEAT on behalf of the PROVHILO , iPROVE and PROBESE Investigators, and the PROVE Network investigators. Win Ratio approach for the composite outcome of postoperative pulmonary complications: Secondary analysis of a harmonised and pooled database of three randomised clinical trials. Eur J Anaesthesiol. 2025 Apr 1;42(4):340-346. doi: 10.1097/EJA.0000000000002116. Epub 2024 Dec 18.
- Derived from this study: PubMed 37234075Mazzinari G, Zampieri FG, Ball L, Campos NS, Bluth T, Hemmes SNT, Ferrando C, Librero J, Soro M, Pelosi P, Gama de Abreu M, Schultz MJ, Serpa Neto A; PROVHILO investigators; iPROVE investigators; PROBESE investigators; PROVE network investigators. Effect of intraoperative PEEP with recruitment maneuvers on the occurrence of postoperative pulmonary complications during general anesthesia--protocol for Bayesian analysis of three randomized clinical trials of intraoperative ventilation. F1000Res. 2023 Jun 23;11:1090. doi: 10.12688/f1000research.125861.2. eCollection 2022.
- Derived from this study: PubMed 35431038Campos NS, Bluth T, Hemmes SNT, Librero J, Pozo N, Ferrando C, Ball L, Mazzinari G, Pelosi P, Gama de Abreu M, Schultz MJ, Serpa Neto A; REPEAT; investigators for the PROVHILO study; iPROVE study; PROBESE study investigators; PROVE Network. Intraoperative positive end-expiratory pressure and postoperative pulmonary complications: a patient-level meta-analysis of three randomised clinical trials. Br J Anaesth. 2022 Jun;128(6):1040-1051. doi: 10.1016/j.bja.2022.02.039. Epub 2022 Apr 15.
- Individual participant dataSharing planned: Yes. The harmonized dataset will be available after the publication of the main results and under request to the steering committee
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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.
The record lists no contact. Use the official record to reach the sponsor.
3 sites in 3 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Surgery and Mechanical Ventilation Complication, run by Hospital Israelita Albert Einstein at 3 sites in 3 countries.
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 1 inclusion and 0 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 10 Jan 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 3 sites in Germany, Netherlands, Spain. 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?
Incidence of postoperative pulmonary complications (time frame: Until day seven or hospital discharge, whichever comes first). 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 NCT03937375, which also lists 8 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 10 Jan 2024.