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Related Concept Videos

Asthma III: Clinical Manifestations01:13

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...
Chronic Obstructive Pulmonary Disease-I: Introduction01:20

Chronic 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.
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
Medical History
COPD: Management Using Bronchodilators and Corticosteroids01:26

COPD: Management Using Bronchodilators and Corticosteroids

Chronic obstructive pulmonary isease (COPD) involves a group of progressive lung disorders characterized by persistent airflow limitation and chronic respiratory symptoms. Asthma-COPD Overlap Syndrome (ACOS), encompassing features of both asthma and Chronic obstructive pulmonary disease (COPD), is a group of progressive lung disorders that includes chronic bronchitis, emphysema, and refractory (non-reversible) asthma. ACOS leads to complex clinical presentations that combine the inflammatory...
Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:

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Related Experiment Video

Updated: Jun 13, 2026

Assessment of Respiratory Function in Conscious Mice by Double-chamber Plethysmography
08:58

Assessment of Respiratory Function in Conscious Mice by Double-chamber Plethysmography

Published on: July 10, 2018

Which functional parameters can help differentiate severe asthma from COPD?

Ricardo Marques Dias1, Fernando Hauaji Chacur, Sonia Regina da Silva Carvalho

  • 1Cardiopulmonary Sciences, UNIRIO. dias.ricardomarques@gmail.com

Revista Portuguesa De Pneumologia
|May 4, 2010
PubMed
Summary
This summary is machine-generated.

Accurate diagnosis of asthma and COPD can be achieved using specific respiratory function tests. Diffusion capacity for carbon monoxide (DLCO) and bronchodilator response (FEV1) effectively differentiate these obstructive lung diseases.

Related Experiment Videos

Last Updated: Jun 13, 2026

Assessment of Respiratory Function in Conscious Mice by Double-chamber Plethysmography
08:58

Assessment of Respiratory Function in Conscious Mice by Double-chamber Plethysmography

Published on: July 10, 2018

Area of Science:

  • Pulmonology
  • Respiratory Medicine
  • Diagnostic Imaging

Background:

  • Asthma and Chronic Obstructive Pulmonary Disease (COPD) are common obstructive lung diseases.
  • Differentiating between asthma and COPD can be challenging due to overlapping symptoms.
  • Accurate diagnosis is crucial for effective treatment and patient management.

Purpose of the Study:

  • To identify key respiratory function parameters for distinguishing asthma from COPD.
  • To evaluate the diagnostic utility of spirometry, plethysmography, and DLCO tests.
  • To assess the role of bronchodilator response in differential diagnosis.

Main Methods:

  • Conducted lung function tests on 20 asthma and 30 COPD patients.
  • Included spirometry, plethysmography, bronchodilator response testing, and diffusion with carbon monoxide (DLCO).
  • Adhered to International Guidelines (ATS/ERS) for test performance.

Main Results:

  • Asthma patients were younger and had a higher proportion of females compared to COPD patients.
  • Asthma group showed more severe obstruction (FEV1/FVC=59% vs 66%) and greater bronchodilator response.
  • DLCO was normal in asthma (103%P) but reduced in COPD (69%); asthma group had higher residual volume and airway resistance.

Conclusions:

  • Multiple respiratory function parameters aid in differentiating asthma and COPD.
  • DLCO demonstrated high specificity for COPD diagnosis.
  • Bronchodilator response (FEV1 change) showed high sensitivity for asthma diagnosis, highlighting their importance in differential diagnosis.