Prevalence and Outcome of Acute Hypoxemic Respiratory Failure (PANDORA)

March 5, 2021 updated by: Jesus Villar, Dr. Negrin University Hospital

Prevalence and Outcome of Acute Hypoxemic Respiratory Failure (PANDORA Study)

This study is an extension of the Spanish Initiative for Epidemiology, Stratification and Therapies of Acute respiratory failure (SIESTA) Network.

The present study is aimed to establish the epidemiological characteristics and clinical outcomes of mechanically ventilated patients with acute hypoxemic respiratory failure [defined as a PaO2/FiO2 ≤300 mmHg on positive end-expiratory pressure (PEEP) of 5 cmH2O or more, and FiO2 of 0.3 or more] admitted in a network of Spanish hospitals.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The present study is aimed to establish the epidemiological characteristics and clinical outcomes of adult mechanically ventilated patients with acute hypoxemic respiratory failure [defined as a PaO2/FiO2 ≤300 mmHg on positive end-expiratory pressure (PEEP) of 5 cmH2O or more and FiO2 of 0.3 or more] admitted in a network of Spanish hospitals. Although there are few previous published observational studies examining the incidence and mortality of patients with acute respiratory failure and ARDS, there are no studies specifically assessing the epidemiological characteristics, patterns of ventilation and clinical outcomes in patients with acute hypoxemic respiratory failure in the current era of lung protective ventilation.

Since the study is prospective, with consecutive collection of clinically relevant data from patients and with the participation of several ICUs from different geographical regions of Spain, the findings would be highly generalizable. The study is aimed to improve the knowledge on the epidemiology and outcome of ventilated patients, to identify the percentage of patients developing ARDS under the current definition, to validate a bedside scoring system developed by us for stratification of lung severity, and to examine the prognosis of hypoxemic respiratory failure, and risk factors associated with fatal outcome.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
1400

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
      • A Coruña, Spain
        • Hospital Universitario de La Coruña
      • Albacete, Spain
        • Complejo Hospitalario de Albacete
      • Ciudad Real, Spain
        • Hospital General de Ciudad Real
      • Cuenca, Spain
        • Hospital Virgen de la Luz
      • León, Spain
        • Complejo Hospitalario Universitario de León
      • Madrid, Spain
        • Hospital Universitario 12 de Octubre
      • Madrid, Spain
        • Hospital Universitario La Paz
      • Madrid, Spain
        • Hospital Universitario Ramon y Cajal
      • Madrid, Spain
        • Hospital Universitario Puerta de Hierro
      • Madrid, Spain
        • Hospital Fundación Jiménez Díaz
      • Murcia, Spain
        • Hospital Universitario Virgen de Arrixaca
      • Málaga, Spain
        • Hospital Universitario Carlos Haya
      • Segovia, Spain
        • Hospital General de Segovia
      • Valencia, Spain
        • Hospital Clinico Universitario de Valencia
      • Valladolid, Spain
        • Hospital Clinico Universitario de Valladolid
      • Valladolid, Spain
        • Hospital Universitario Rio Hortega
      • Valladolid, Spain
        • Hospital Universitario Rio Hortega - Anesthesia
      • Zamora, Spain
        • Hospital Virgen de la Concha
    • A Coruña
      • Santiago de Compostela, A Coruña, Spain
        • Complejo Hospitalario de Santiago
    • Barcelona
      • Terrassa, Barcelona, Spain
        • Hospital Universitario Mutua de Terrasa
    • Ciudad Real
      • Alcázar de San Juan, Ciudad Real, Spain
        • Hospital La Mancha Centro
    • León
      • Ponferrada, León, Spain
        • Hospital El Bierzo
    • Tenerife
      • Santa Cruz de Tenerife, Tenerife, Spain
        • Hospital Universitario NS de Candelaria
    • Toledo
      • Talavera de la Reina, Toledo, Spain
        • Hospital NS del Prado

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

All consecutive patients admitted to participating ICUs will be screened daily. Only patients meeting inclusion criteria for acute hypoxemic respiratory failure (as defined above) will be enrolled into the study.

Description

Inclusion Criteria:

  • Age ≥18-year old.
  • Endotracheal intubation and mechanical ventilation, independent of whether the need for ventilatory support is shorter or longer than 24 hours. Only patients receiving invasive mechanical ventilation can be included, although patients could have been on non-invasive ventilation before intubation.
  • PaO2/FiO2 ≤300 mmHg on invasive mechanical ventilation with a PEEP of 5 cmH2O or more, and with a FiO2 of 0.3 or more.

Exclusion Criteria:

  • No patients should be excluded (if they meet all the inclusion criteria), regardless of the underlying disease, estimated life expectancy, or duration of invasive mechanical ventilation.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Hypoxemic Acute Respiratory Failure
Consecutive intubated patients receiving invasive mechanical ventilation, with a PaO2/FiO2 ≤300 mmHg under a PEEP of 5 cmH2O or more, and with a FiO2 of 0.3 or more.
Device: mechanical ventilation
ventilatory support

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Prevalence of hypoxemic acute respiratory failure
Time Frame: 6 months
The investigators will calculate the prevalence in relation to: (i) total number of ICU admissions during the study period in all participating centers; (ii) total number of mechanically ventilated patients during the study period in all participating centers, and (iii) per ICU bed available in the participating centers over the study period.
6 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
death in the ICU
Time Frame: Intensive care unit stay [up to 60 days]
outcome at the time of discharge from ICU
Intensive care unit stay [up to 60 days]
death in the hospital
Time Frame: Hospital stay [Maximum 6 months]
outcome before discharge to home (overall and in each category of acute hypoxemic respiratory failure).
Hospital stay [Maximum 6 months]

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Dr. Negrin University Hospital

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Asociación Científica Pulmón y Ventilación Mecánica
Consorcio Centro de Investigación Biomédica en Red (CIBER)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Jesús Villar, MD, PhD, Hospital Dr. Negrin, Las Palmas de Gran Canaria, Spain

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 1, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 31, 2018

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 31, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 19, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 8, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 9, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 9, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 5, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ACPVM170501

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Patients' data will be anonymized and recorded in a case report form (CRF) specifically designed for this study. Data will be presented globally at the end of the study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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