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Sputum and blood samplingWiki

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Clinical Trial MeSH HPO Drug Gene SNP Protein Mutation


Correlated Drug Terms (0)


Name (Synonyms) Correlation

Correlated MeSH Terms (4)


Name (Synonyms) Correlation
D029424 Pulmonary Disease, Chronic Obstructive NIH 0.58
D012120 Respiration Disorders NIH 0.50
D008173 Lung Diseases, Obstructive NIH 0.50
D012140 Respiratory Tract Diseases NIH 0.38

Correlated HPO Terms (2)


Name (Synonyms) Correlation
HP:0006536 Obstructive lung disease HPO 1.00
HP:0006510 Chronic obstructive pulmonary disease HPO 1.00

There is one clinical trial.

Clinical Trials


1 Occurrence of Potential Bacterial and Viral Pathogens in Stable Chronic Obstructive Pulmonary Disease (COPD) and During Acute Exacerbations of COPD (AECOPD), in Asia Pacific

Since the infectious aetiology of AECOPD has been suggested to vary according to geographical region, the primary purpose of this study (which will be conducted in several countries in Asia Pacific) is to evaluate the occurrence of bacterial and viral pathogens in the sputum of stable COPD patients and at the time of AECOPD. Given the increasing and projected burden of COPD in the Asia Pacific region, this study will also evaluate the frequency, severity and duration of AECOPD, as well as the impact of AECOPD on health-related quality of life (HRQOL), healthcare utilisation and lung function.

NCT03151395 Respiratory Disorders Other: Sputum and blood sampling
MeSH:Lung Diseases, Obstructive Pulmonary Disease, Chronic Obstructive Respiration Disorders Respiratory Tract Diseases
HPO:Chronic obstructive pulmonary disease Obstructive lung disease

Primary Outcomes

Description: Bacterial pathogens, as identified by bacteriological methods, including (but not necessarily limited to) Haemophilus influenzae, Moraxella catarrhalis, Streptococcus pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae and Acinetobacter baumannii.

Measure: Occurrence of potential bacterial in sputum of stable COPD patients.

Time: Over the course of 1 year

Description: Bacterial pathogens, as identified by bacteriological methods, including (but not necessarily limited to) Haemophilus influenzae, Moraxella catarrhalis, Streptococcus pneumoniae, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae and Acinetobacter baumannii.

Measure: Occurrence of potential bacterial in sputum during AECOPD.

Time: Over the course of 1 year

Description: Viral pathogens, as identified by PCR, including (but not necessarily limited to) Respiratory syncytial virus (RSV), parainfluenza virus, enterovirus/ rhinovirus, metapneumovirus, influenza virus, adenovirus, bocavirus and coronavirus and by rhinovirus quantitative RT-PCR.

Measure: Occurrence of viral pathogens in sputum of stable COPD patients.

Time: Over the course of 1 year

Description: Viral pathogens, as identified by PCR, including (but not necessarily limited to) Respiratory syncytial virus (RSV), parainfluenza virus, enterovirus/ rhinovirus, metapneumovirus, influenza virus, adenovirus, bocavirus and coronavirus and by rhinovirus quantitative RT-PCR.

Measure: Occurrence of viral pathogens in sputum during AECOPD.

Time: Over the course of 1 year

Secondary Outcomes

Description: Including (but not necessarily limited to) H. influenzae, M. catarrhalis, S. pneumoniae, S. aureus and P. aeruginosa. The proportion of sputum samples obtained at each confirmed stable/AECOPD visit and positive for specific bacterial pathogens by PCR will be computed with 95% confidence intervals.

Measure: Occurrence of potential bacterial pathogens in sputum of stable COPD patients and during AECOPD, as measured by real-time qualitative PCR/ quantitative PCR and compared to data from bacteriological methods.

Time: Over the course of 1 year

Description: The proportion of sputum samples obtained at each AECOPD visit and positive for specific bacterial/viral pathogens by bacteriological methods and PCR, respectively (overall and by bacterial/viral species) will be computed with 95% confidence intervals by any severity (mild, moderate and severe).

Measure: Occurrence of potential bacterial and viral pathogens (overall and by species) in sputum during AECOPD by severity of AECOPD.

Time: Over the course of 1 year

Description: The proportion of sputum samples obtained at each confirmed stable visit and positive for bacterial/viral pathogens by bacteriological methods and PCR, respectively (overall and by bacterial / viral species) will be computed with 95% confidence intervals by Gold grade at enrolment.

Measure: Occurrence of potential bacterial and viral pathogens (overall and by species) in sputum of stable COPD patients by GOLD grade.

Time: Over the course of 1 year

Description: The following incidence rates will be computed, with 95% confidence intervals (CI): All-cause AECOPD. AECOPD having sputum containing bacterial pathogens found by PCR or by bacteriological methods or by both methods (overall and by, but not limited to, the following bacterial species: H. influenzae, M. catarrhalis, S. pneumoniae, S. aureus, and P. aeruginosa). The 95% CI of the incidence rate will be computed using a model which accounts for repeated events. The incidence rates described above will also be computed for mild, moderate severe AECOPD and by GOLD grade at enrolment.

Measure: Incident rate (per subject per year) of any AECOPD overall and by GOLD grade.

Time: Over the course of 1 year

Description: Classification of severity according to the intensity of medical intervention required: mild: controlled with an increase in dosage of regular medications; moderate: requires treatment with systemic corticosteroids and/ or antibiotics; severe: requires hospitalisation.

Measure: Number of mild, moderate or severe AECOPD overall and by GOLD grade.

Time: Over the course of 1 year

Description: Descriptive statistics (median, mean, range, standard deviation, first and third quartiles) on the number of days of AECOPD episodes will be presented.

Measure: Number of days of AECOPD episodes overall and by AECOPD severity.

Time: Over the course of 1 year

Description: Descriptive statistics (median, mean, range, standard deviation, first and third quartiles) on the CAT scores will be tabulated at each respective visit.

Measure: COPD assessment test (CAT) score in stable COPD patients and during AECOPD.

Time: Over the course of 1 year

Description: Descriptive statistics (median, mean, range, standard deviation, first and third quartiles) on the SGRQ-C scores will be tabulated at each respective visit.

Measure: St. George's Respiratory Questionnaire (SGRQ-C) score in stable COPD patients.

Time: Over the course of 1 year

Description: The spirometric classification of airflow limitation in COPD patients is based on post-bronchodilator FEV1. Summary statistics (mean, median, standard deviation, maximum and minimum) on post bronchodilator FEV1% of predicted normal value will be tabulated at each respective visit.

Measure: Forced expiratory volume in 1 second (FEV1%) of predicted normal value in stable COPD patients.

Time: At Pre-Month 0 and Month 12

Description: Healthcare use for each COPD patient will be obtained through review of the subject's medical record (aided by subject self-reporting). Healthcare utilisation includes all unscheduled visits to a physician office, visits to urgent care, visits to emergency department, and hospitalizations.

Measure: Assessment of the Healthcare utilization.

Time: Over the course of 1 year


Related HPO nodes (Using clinical trials)