Chronic Obstructive Pulmonary Disease (COPD)NCT07590362
D-RSBI Versus RSBI for Predicting Weaning Success in COPD Patients
An observational study of Chronic Obstructive Pulmonary Disease (COPD) and Mechanical Ventilator Weaning, run by Sohag University at 1 site in Egypt.
Trial summary
This prospective observational cohort study aims to compare the predictive accuracy of diaphragmatic rapid shallow breathing index (D-RSBI) versus traditional rapid shallow breathing index (RSBI) for predicting weaning success from invasive mechanical ventilation in COPD patients. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Chronic Obstructive Pulmonary Disease (COPD), Mechanical Ventilator Weaning
- How many people
- 100 participants
- Where
- 1 siteEgypt
- Study dates
- 15 Apr 2026to Jun 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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: Mechanically ventilated adult COPD patients admitted to the intensive care units of Sohag University Hospitals and fulfilling standard weaning readiness criteria.
Who may be able to join
- Mechanically ventilated COPD patients fulfilling standard weaning readiness criteria.
- Invasive mechanical ventilation for more than 24 hours before spontaneous breathing trial.
- Hemodynamically stable without significant vasopressor support.
- Adequate oxygenation with FiO2 ≤ 0.5 and PEEP ≤ 8 cmH2O .
- Preserved mental status and ability to initiate spontaneous breathing.
- Successful tolerance of spontaneous breathing trial conducted on CPAP mode with pressure support ≤ 8 cmH2O.
Who cannot join
- Refusal of consent
- Neuromuscular disease, phrenic nerve palsy, or diaphragmatic paralysis.
- Large pneumothorax or pathology interfering with ultrasound assessment.
- Terminal extubation.
- Recent major thoracic surgery.
- Poor sonographic window despite repeated attempts.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Egypt1 site, 1 recruiting
- Recruiting
Sohag University Hospital
Sohag, Sohag Governorate, 82524
Ahmed Atef Mohamed Sayed, MBBCh, +2001006973892, atef53370@gmail.com
About this study
Official title: Diaphragmatic Rapid Shallow Breathing Index (D-RSBI) Versus Traditional Rapid Shallow Breathing Index (RSBI) for Prediction of Weaning Success From Mechanical Ventilation in COPD Patients
This prospective observational cohort study aims to compare the predictive accuracy of diaphragmatic rapid shallow breathing index (D-RSBI) versus traditional rapid shallow breathing index (RSBI) for predicting weaning success from invasive mechanical ventilation in COPD patients. Diaphragmatic ultrasound measurements will be performed during spontaneous breathing trials, and patients will be followed for 72 hours after extubation to assess weaning outcomes.
- Keywords
- D-RSBI, RSBI, COPD, Diaphragm Ultrasound, Mechanical Ventilation Weaning
- Medical subject headings
- Pulmonary Disease, Chronic Obstructive
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Mechanically Ventilated COPD Patients | COPD patients receiving invasive mechanical ventilation who fulfill weaning readiness criteria and undergo spontaneous breathing trial with assessment of D-RSBI and conventional RSBI. |
What is being measured
The primary outcome is the main question the study is designed to answer.
AUROC of D-RSBI for prediction of successful weaning
Area under the receiver operating characteristic curve (AUROC) of diaphragmatic rapid shallow breathing index (D-RSBI) for predicting successful weaning within 72 hours after extubation in mechanically ventilated COPD patients.
Measured: Within 72 hours after extubation
Secondary outcomes (2)
AUROC of conventional RSBI for prediction of successful weaning.
Area under the receiver operating characteristic curve (AUROC) of conventional rapid shallow breathing index (RSBI) for predicting successful weaning within 72 hours after extubation in mechanically ventilated COPD patients.
Measured: Within 72 hours after extubation
Difference between AUROC values of D-RSBI and conventional RSBI
Comparison between AUROC values of D-RSBI and conventional RSBI for prediction of successful weaning.
Measured: Within 72 hours after extubation
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 May 2026
- Study start15 Apr 2026
- Primary completionMay 2027 (estimated)
- Study completionJun 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Chronic Obstructive Pulmonary Disease (COPD)Studies of the same condition, open and under way.
- More trials run by Sohag UniversityThe sponsor's other registered studies.
- 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
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Sohag University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ahmed Atef Mohamed, Sohag University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07590362
- Sponsor's protocol ID
- Soh-Med-26-4-1MS
- Status last verified
- May 2026
- First submitted
- 7 May 2026
- Last updated
- 15 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Llamas-Alvarez AM, Tenza-Lozano EM, Latour-Perez J. Diaphragm and Lung Ultrasound to Predict Weaning Outcome: Systematic Review and Meta-Analysis. Chest. 2017 Dec;152(6):1140-1150. doi: 10.1016/j.chest.2017.08.028. Epub 2017 Aug 31.
PubMed 28864053Yang KL, Tobin MJ. A prospective study of indexes predicting the outcome of trials of weaning from mechanical ventilation. N Engl J Med. 1991 May 23;324(21):1445-50. doi: 10.1056/NEJM199105233242101.
PubMed 2023603Spadaro S, Grasso S, Mauri T, Dalla Corte F, Alvisi V, Ragazzi R, Cricca V, Biondi G, Di Mussi R, Marangoni E, Volta CA. Can diaphragmatic ultrasonography performed during the T-tube trial predict weaning failure? The role of diaphragmatic rapid shallow breathing index. Crit Care. 2016 Sep 28;20(1):305. doi: 10.1186/s13054-016-1479-y.
PubMed 27677861
Study at a glance
From the registry record, last updated by the sponsor on 15 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Diaphragmatic Rapid Shallow Breathing Index (D-RSBI) Versus Traditional Rapid Shallow Breathing Index (RSBI) for Prediction of Weaning Success From Mechanical Ventilation in COPD Patients
- ClinicalTrials.gov ID
- NCT07590362
- Acronym / sponsor ID
- Soh-Med-26-4-1MS
- Keywords
- D-RSBI, RSBI, COPD, Diaphragm Ultrasound, Mechanical Ventilation Weaning
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Sohag UniversityUniversity, hospital or other
- Study start
- 15 Apr 2026 (actual)
- Primary completion
- May 2027 (estimated)
- Study completion
- Jun 2027 (estimated)
- First posted
- 15 May 2026 (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.
This prospective observational cohort study aims to compare the predictive accuracy of diaphragmatic rapid shallow breathing index (D-RSBI) versus traditional rapid shallow breathing index (RSBI) for predicting weaning success from invasive mechanical ventilation in COPD patients. Diaphragmatic ultrasound measurements will be performed during spontaneous breathing trials, and patients will be followed for 72 hours after extubation to assess weaning outcomes.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Mechanically Ventilated COPD Patients | – | –COPD patients receiving invasive mechanical ventilation who fulfill weaning readiness criteria and undergo spontaneous breathing trial with assessment of D-RSBI and conventional RSBI. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Mechanically ventilated adult COPD patients admitted to the intensive care units of Sohag University Hospitals and fulfilling standard weaning readiness criteria.
Key inclusion criteria (6 listed)
- Mechanically ventilated COPD patients fulfilling standard weaning readiness criteria.
- Invasive mechanical ventilation for more than 24 hours before spontaneous breathing trial.
- Hemodynamically stable without significant vasopressor support.
- Adequate oxygenation with FiO2 ≤ 0.5 and PEEP ≤ 8 cmH2O .
- Preserved mental status and ability to initiate spontaneous breathing.
Key exclusion criteria (6 listed)
- Refusal of consent
- Neuromuscular disease, phrenic nerve palsy, or diaphragmatic paralysis.
- Large pneumothorax or pathology interfering with ultrasound assessment.
- Terminal extubation.
- Recent major thoracic surgery.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
AUROC of D-RSBI for prediction of successful weaning
Time frame: Within 72 hours after extubation
Area under the receiver operating characteristic curve (AUROC) of diaphragmatic rapid shallow breathing index (D-RSBI) for predicting successful weaning within 72 hours after extubation in mechanically ventilated COPD patients.
2 secondary outcomes
AUROC of conventional RSBI for prediction of successful weaning.
Time frame: Within 72 hours after extubation
Difference between AUROC values of D-RSBI and conventional RSBI
Time frame: Within 72 hours after extubation
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 May 2026.
- Background: PubMed 28864053Llamas-Alvarez AM, Tenza-Lozano EM, Latour-Perez J. Diaphragm and Lung Ultrasound to Predict Weaning Outcome: Systematic Review and Meta-Analysis. Chest. 2017 Dec;152(6):1140-1150. doi: 10.1016/j.chest.2017.08.028. Epub 2017 Aug 31.
- Background: PubMed 2023603Yang KL, Tobin MJ. A prospective study of indexes predicting the outcome of trials of weaning from mechanical ventilation. N Engl J Med. 1991 May 23;324(21):1445-50. doi: 10.1056/NEJM199105233242101.
- Background: PubMed 27677861Spadaro S, Grasso S, Mauri T, Dalla Corte F, Alvisi V, Ragazzi R, Cricca V, Biondi G, Di Mussi R, Marangoni E, Volta CA. Can diaphragmatic ultrasonography performed during the T-tube trial predict weaning failure? The role of diaphragmatic rapid shallow breathing index. Crit Care. 2016 Sep 28;20(1):305. doi: 10.1186/s13054-016-1479-y.
- Individual participant dataSharing planned: No
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Chronic Obstructive Pulmonary Disease (COPD) and Mechanical Ventilator Weaning, run by Sohag University at 1 site in Egypt.
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 6 inclusion and 6 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: looking for participants now, as of the sponsor's last update on 15 May 2026. 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 Egypt. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Ahmed Atef Mohamed, MBBCh (+201006973892, ahmed_ateff_post@med.sohag.edu.eg), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
AUROC of D-RSBI for prediction of successful weaning (time frame: Within 72 hours after extubation). 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 NCT07590362, which also lists 3 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 15 May 2026.