CClinicalTrials.gg
Status unknownNCT04024735Updated Jul 18, 2019

Mechanisms of COPD Exacerbation Recurrence

An observational study in Pulmonary Disease, Chronic Obstructive, COPD Exacerbation and Patient Readmission, sponsored by University College, London. Status unknown at 1 site in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-07-18.

Sponsored by University College, London · Observational

The sponsor has not verified this record recently (last verified Jul 2019), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
166
Ages
18 Years and older
Sex
All
01

Study summary

Chronic obstructive pulmonary disease (COPD) is a common smoking-related lung disease. Patients with COPD are at increased risk of readmission to hospitals within the following 30 days. Hospital readmissions of COPD contribute to clinical and economic burden on society. Understanding why some COPD patients are readmitted remains a key area of unmet need.

To our knowledge, no previous study has fully investigated both the social and clinical risk factors associated with these types of patients. The investigators want to prospectively and comprehensively explore the possible causes, whether clinical or social factors, that cause rehospitalisation. The investigators will be collecting demographic and clinical information including daily physical activity level, lung function, blood and sputum samples. These measurements will be collected at patient admission, discharge and at follow-up of 30 and 90 days. This process could lead to a better understanding of the reasons which prevent early hospital readmission for those patients.

02

Conditions studied

  • Pulmonary Disease, Chronic Obstructive
  • COPD Exacerbation
  • Patient Readmission
  • Recurrence
03

In context

Pulmonary Disease, Chronic Obstructive

4,131 studies on the registry are indexed under Pulmonary Disease, Chronic Obstructive; 697 are open to participants now.

This study's planned enrollment of 166 is close to the median of 180 across 1,066 observational studies indexed under Pulmonary Disease, Chronic Obstructive.

Browse Pulmonary Disease, Chronic Obstructive studies →

Lead sponsor

University College, London is the lead sponsor of 632 studies on the registry; 145 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 2 (33%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

COPD patients admitted to the hospital because of COPD exacerbation.

Inclusion criteria

  • Patients who have a primary diagnosis of COPD
  • Patients admitted to hospital with an exacerbation.

Exclusion criteria

Exclusion Criteria:

  • Patients in whom an initial diagnosis of an AECOPD is revised to an alternative at a later phase of the study.
  • Patients who have a predominant history of asthma
  • Patients with a confirmed active malignancy
  • Patients who have a predominant history of bronchiectasis.
  • Cognitive impairment patients with a Mental Test Score (MTS) of 6 or less.
  • Inability to give informed consent to take part in the study
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
166 participants (estimated)
Patient registry
No

Interventions

  • Diagnostic testSpirometry, Forced Oscillation Technique, Step-counter, sputum and blood samples

    We will be collecting demographic and clinical information including daily physical activity level, lung function, blood and sputum samples. These measurements will be collected at patient admission, discharge and at follow-up of 30 and 90 days.

06

What researchers measure

Primary outcomes

  1. The primary outcome is the factors that determine readmission to hospital within 30 and 90 days post discharge.

    Time frame: 30 and 90 days

Secondary outcomes

  1. Readmission rate at 30 days and at 3 months

    Time frame: 30 and 90 days

  2. Prevalence of comorbidities between those who are and are not readmitted within 30 and 90 days.

    Time frame: 30 and 90 days

  3. Changes in admission-to-discharge in within breath reactance (∆Xrs5Hz) between patients who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

  4. Change in the modified Medical Research Council scale (mMRC) at admission, discharge and after 30 days follow-up or at readmission.

    It is used to scale breathlessness, ranges from 0 to 4 which higher values represent a worse outcome.

    Time frame: 30 and 90 days

  5. Change in quality of life by measuring COPD assessment test (CAT) at admission, discharge and after 30 days follow-up or at readmission.

    It is used to scale patient's quality of life. Range of CAT scores from 0-40 which higher scores denote a more severe impact of COPD on a patient's life.

    Time frame: 30 and 90 days

  6. Change in Hospital Anxiety and Depression Scale (HADS) at admission, discharge and after 30 days follow-up or at readmission.

    It is used to scale patient's quality of life. The questionnaire comprises seven questions for anxiety and seven questions for depression. Each item on the questionnaire is scored from 0-3 and this means that a person can score between 0 and 21 for either anxiety or depression. The higher score indicates a worse outcome.

    Time frame: 30 and 90 days

  7. Prevalence of frailty between those who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

  8. Change in physical activity level (daily steps) following the discharge between patients who are and are not readmitted.

    Step counter (pedometer) will be given to wear throughout the 30 days period to measure the daily steps.

    Time frame: 30 days

  9. Changes in admission-to-discharge peak inspiration flow rate (PIFR) between patients who are and are not readmitted.

    The In-Check DIAL device will be used which is capable of measuring inspiratory flow rates between 0 and 120 L/min. Optimal PIFR, more than 60 L/min; and sub-optimal PIFR, 60 L/min or less).

    Time frame: 30 and 90 days

  10. Change in white cell count (WCC) blood biomarkers

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  11. Change in C-reactive protein (CRP) blood biomarker

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  12. Change in Eosinophils blood biomarker

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  13. Change in Neutrophils blood biomarker

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  14. Change in troponin blood biomarker

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  15. Change in B-type Natriuretic Peptide (BNP) blood biomarker

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  16. Change in procalcitonin blood biomarker

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  17. Change in fibrinogen blood biomarker

    At admission, discharge and at readmission.

    Time frame: 30 and 90 days

  18. Change in sputum biomarkers

    This is used to assess bacteria species, load and resistance to antibiotics, and markers of inflammation such as IL-8.

    Time frame: 30 and 90 days

  19. Number of hospital admissions in the previous year.

    The investigators will record it to find the difference between patients who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

  20. Number of exacerbations in the previous year.

    The investigators will record it to find the difference between patients who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

  21. Use of long-term oxygen therapy (LTOT)

    The investigators will record it to find the difference between patients who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

  22. Length of stay (LOS) in hospital

    The investigators will record it to find the difference between patients who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

  23. Use of non-invasive ventilation (NIV)

    The investigators will record it to find the difference between patients who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

  24. Previous admission to the ICU

    The investigators will record it to find the difference between patients who are and are not readmitted to the hospital within 30 and 90 days.

    Time frame: 30 and 90 days

07

Study locations

1 of 1 sites recruiting
  • Royal Free Hospital NHS
    London, NW3 2PF, United Kingdom
    Recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 18, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04024735
Lead sponsor
University College, London
Responsible party
Sponsor
First posted
Jul 18, 2019
Start date
Jun 1, 2019
Primary completion
Feb 1, 2022 (estimated)
Completion
May 1, 2022 (estimated)
Last update
Jul 18, 2019

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is status unknown, as verified in Jul 2019. You cannot join it, but the record below documents what was studied.

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