Related Experiment Video
Updated: Jun 19, 2026
08:17
Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
Published on: August 25, 2017
11.0K
Contemporary Concise Review 2022: Chronic obstructive pulmonary disease
Peter M A Calverley1, Paul P Walker2
1Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.
Respirology (Carlton, Vic.)
|March 15, 2023
Summary
Diagnosing airflow obstruction in Chronic Obstructive Pulmonary Disease (COPD) can be simplified using a fixed ratio <0.7, which also predicts clinical outcomes. Understanding COPD comorbidities and biomarkers like serum eosinophils is crucial for patient management and clinical trials.
Area of Science:
- Pulmonary Medicine
- Respiratory Health
- Clinical Diagnostics
Background:
- Current international guidelines recommend complex methods for diagnosing airflow obstruction and COPD.
- Simpler diagnostic methods may offer robust prediction of clinical outcomes.
- COPD is associated with significant comorbidities impacting patient prognosis and mortality.
Purpose of the Study:
- To evaluate the utility of a fixed ratio <0.7 for diagnosing airflow obstruction in COPD.
- To explore the clinical significance of common COPD comorbidities.
- To discuss the role of serum eosinophil counts as a COPD biomarker.
Main Methods:
- Analysis of diagnostic criteria for airflow obstruction.
- Review of common comorbidities in COPD patients, including psychological and cachectic factors.
- Examination of serum eosinophil counts and their relevance in COPD.
Main Results:
- A fixed ratio <0.7 is a simpler and robust predictor of important clinical outcomes in COPD.
- Common comorbidities include coronary artery calcification, emphysema, bronchiectasis, psychological distress, and cachexia, all linked to higher mortality and exacerbations.
- Serum eosinophil counts are important biomarkers with clearer normal ranges now established.
Conclusions:
- A simplified approach using a fixed ratio <0.7 aids in COPD diagnosis and outcome prediction.
- Addressing comorbidities like psychological distress and cachexia is vital for improving COPD patient mortality and exacerbation rates.
- Clinical trial criteria need re-evaluation to include high-risk patients, and understanding hyperinflation's cardiac impact is key for treatment strategies.
Keywords:
COPD comorbidityCOPD diagnosisCOPD exacerbationCOPD treatmentchronic obstructive pulmonary diseaseMore Related Videos
Related Concept Videos
01:24Chronic Obstructive Pulmonary Disease
COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
01:20Chronic Obstructive Pulmonary Disease-I: Introduction
Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
01:29Chronic Obstructive Pulmonary Disease-V: Management
Managing Chronic Obstructive Pulmonary Disease (COPD) involves a multifaceted approach to reduce symptoms, prevent exacerbations, improve overall health status, and slow disease progression. Key strategies include lifestyle modifications, pharmacotherapy, supportive therapies, and, in some cases, surgery. Here is an overview of the primary COPD management strategies:
Smoking Cessation
Smoking Cessation
01:23Chronic Obstructive Pulmonary Disease I: Introduction
Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
01:24Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features
Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...