Phenotypes of COPD
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|ClinicalTrials.gov Identifier: NCT03432026|
Recruitment Status : Not yet recruiting
First Posted : February 13, 2018
Last Update Posted : June 27, 2018
Chronic Obstructive Pulmonary Disease (COPD) has been defined by international guidelines as a common preventable and treatable disease characterized by persistent air flow limitation and respiratory symptoms caused by exposure to gases or noxious particles.
COPD is a major cause of morbidity and mortality worldwide. It is predicted to become the third leading cause of death and the fifth leading cause of disability by the year 2020.
|Condition or disease||Intervention/treatment|
|Chronic Obstructive Pulmonary Disease||Device: High resolution computed tomography scan of the chest.|
Although the disease has been greatly associated with tobacco smoking, non- smokers can also have COPD, and the burden of COPD in non-smokers is also higher than previously believed especially in developing countries. Exposure to gases, environmental pollution, respiratory infection, noxious particles, passive smoking, and indoor air pollution is the main cause of COPD in non smokers.
COPD over the years has been classified into two phenotypes; chronic bronchitis or classic emphysema.However, The Global Initiative for Chronic Obstructive Lung Disease (GOLD) guidelines over the last few years have stopped emphasizing the categorization of chronic obstructive pulmonary disease (COPD) into only emphysema or chronic bronchitis
Clear examples of COPD phenotypes in smokers have been described in different Researches,such as emphysema, chronic bronchitis, frequent exacerbators and the asthma_copd overlap.,but there is alack of information about COPD phenotypes in non-smokers, So, there is a continuous need for research into groups of non smoking patients.
Therefore, the aim of this study is to describe the phenotypes of COPD, their risk factors, Clinical and functional assessment and the prognosis of each COPD phenotype in non-smoking patients.
|Study Type :||Observational|
|Estimated Enrollment :||50 participants|
|Official Title:||Chronic Obstructive Pulmonary Disease Phenotypes in Non-Smokers|
|Estimated Study Start Date :||April 1, 2019|
|Estimated Primary Completion Date :||April 1, 2020|
|Estimated Study Completion Date :||April 1, 2021|
Non-smoker COPD patients
stable non-smoker COPD patients diagnosed by a previous spiromtery to have FEV1/FVC less than 70
Device: High resolution computed tomography scan of the chest.
High resolution computed tomography scan of the chest & pulmonary function tests will be done for every patient to classify them.
- Rate of risk factors of COPD in non smokers. [ Time Frame: 48 hour ]Complete medical history will be taken for each patient to detect risk factors of COPD.