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CompletedNCT04599998Updated May 16, 2024

Long-term Follow-up Findings of Inpatients for COVID-19 Pneumonia

An observational study in Covid19, sponsored by Koc University Hospital. Completed at 1 site in Turkey. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2024-05-16.

Sponsored by Koc University Hospital · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
28
Ages
18 Years to 80 Years
Sex
All
01

Study summary

Coronavirus disease 2019 (COVID-19) is a respiratory tract infection caused by a newly emergent coronavirus (SARS-CoV-2) that can progress to severe multiorgan disease requiring hospitalization. The medium and long-term impact in survivors of COVID-19 on lung function, imaging by thoracic CT, exercise capacity, and health-related quality of life and the relation of these parameters remains to be determined.

Read the detailed description

Aim: To evaluate medium to late (visit 1: 6-12 months after hospital discharge) effects of COVID-19 on lung function, exercise capacity, thoracic CT findings, symptoms and HRQoL in patients with confirmed diagnosis of SARS-CoV-2 infection and the relation between these parameters.

Material and methods: Prospective cohort of subjects with laboratory and/or thoracic CT confirmed COVID-19 who were treated as inpatients. Participants will perform spirometry, lung diffusion capacity of carbon monoxide, 6-minute walk test (6MWT) and cardiopulmonary exercise testing (CPET) after 6-12 months (Visit 1) of COVID-19. Clinical, laboratory and chest image data during the COVID-19 hospitalization will be obtained from medical records.

The minimum sample size was estimated as 37 participants.

02

Conditions studied

  • Covid19

Keywords

  • Covid19
  • lung functions
  • cardiopulmonary exercise testing
  • thoracic CT
  • 6 minute walking test
  • Short form 36 questionnaire
03

In context

COVID-19

7,638 studies on the registry are indexed under COVID-19; 488 are open to participants now.

This study's enrollment of 28 is below the median of 260 across 3,135 observational studies indexed under COVID-19.

Browse COVID-19 studies →

Lead sponsor

Koc University Hospital is the lead sponsor of 11 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Adults with Covid-19 diagnosis

Inclusion criteria

  • Adult patients with Covid 19 diagnosis
  • Ability to read and speak
  • Signed informed consent.
  • Able to perform exercise testing and walking

Exclusion criteria

Exclusion Criteria:

  • Subjects with limited exercise capacity
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
28 participants (actual)
Patient registry
No

Groups and cohorts

  • COVID-19 inpatients

    Patients with laboratory and/or thoracic CT confirmed COVID-19 pneumonia ; older than18 years of age; treated as inpatients; evaluated at 6-12 months after hospital discharge in outpatient clinic

    Diagnostic Test: spirometry, thoracic CT, CPET, 6 minute walking test, SF-36 questionnaire

Interventions

  • Diagnostic testspirometry, thoracic CT, CPET, 6 minute walking test, SF-36 questionnaire

    Participants will perform spirometry, lung diffusion capacity of carbon monoxide, 6-minute walk test (6MWT), Short form-36 (SF-36) questionnaire and cardiopulmonary exercise testing (CPET) after 6-12 months (Visit 1) of COVID-19. Clinical, laboratory and chest image data during the COVID-19 hospitalization will be obtained from medical records.

06

What researchers measure

Primary outcomes

  1. Forced vital capacity (FVC)

    in ml

    Time frame: at 6-12 months after discharge

  2. Lung diffusion capacity for carbon monoxide (DLCO)

    DLCO (%predicted); DLCO/alveolar volume- DLCO/VA (%predicted)

    Time frame: at 6-12 months after discharge

  3. 6-minute walk test distance

    m

    Time frame: at 6-12 months after discharge

  4. Short-form 36 questionnaire (SF-36)

    scores range between 0 and 100 with higher scores indicating a better HRQoL

    Time frame: at 6-12 months after discharge

  5. Oxygen uptake at peak exercise

    from incremental Cardiopulmonary exercise test (% of predicted)

    Time frame: at 6-12 months after discharge

  6. Minute-ventilation/carbon dioxide output during exercise

    from incremental Cardiopulmonary exercise test (L/L)

    Time frame: at 6-12 months after discharge

  7. Dyspnea during exercise

    from incremental Cardiopulmonary exercise test (measured with 10-point categorical Borg scale

    Time frame: at 6-12 months after discharge

  8. Thoracic CT findings

    lung parenchymal abnormalities as percentage of occupied lung

    Time frame: in the first week of pneumonia and at 6-12 months after discharge

  9. Forced expiratory volume in 1 second

    in ml and %predicted

    Time frame: at 6-12 months after discharge

  10. FEV1/FVC ratio

    in %

    Time frame: at 6-12 months after discharge

  11. Forced vital capacity %predicted (FVC%)

    in %

    Time frame: at 6-12 months after discharge

Secondary outcomes

  1. Signs and symptoms

    Recorded separately as present or absent) mortality (recorded as present or absent)

    Time frame: in the first week of pneumonia and at 6-12 months after discharge

  2. Time to hospital discharge

    in days

    Time frame: in hospital

  3. ICU discharge

    in days

    Time frame: in hospital

  4. Weaning from intubation

    in days

    Time frame: in the period of intensive care

  5. Weaning from supplemental oxygen

    in days

    Time frame: in hospital

  6. Weaning from noninvasive mechanical ventilation

    in days

    Time frame: in hospital

  7. Mortality

    recorded as present or absent

    Time frame: in hospital and at 6-12 months after discharge

07

Study locations

1 site
  • Koç University Hospital
    Istanbul, 34010, Turkey
08

References and documents

Individual participant data

Plan to share: No

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 May 16, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04599998
Lead sponsor
Koc University Hospital
Responsible party
Fatma Işıl Uzel (MD, Koc University Hospital) — Principal investigator
First posted
Oct 23, 2020
Start date
Oct 15, 2020
Primary completion
Feb 15, 2022
Completion
Mar 1, 2023
Last update
May 16, 2024

Study contacts

Benan Çağlayan, Prof Dr
study chair · Koç University Hospital Pulmonology Department

Oversight

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

Not currently enrolling

This study is completed, as verified in May 2024. You cannot join it, but the record below documents what was studied.

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