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Related Concept Videos

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
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-V: Management01:29

Chronic 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
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...
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations01:19

Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations

Chronic Obstructive Pulmonary Disease, or COPD, is a long-term condition marked by persistent and only partially reversible airflow limitation. It involves two overlapping conditions—chronic bronchitis and emphysema—which often co-appear but differ in dominant symptoms and underlying mechanisms.Chronic Bronchitis FeaturesChronic bronchitis presents with a persistent productive cough and thick, sometimes purulent mucus due to airway inflammation, enlarged mucus glands, and goblet cell...
Chronic Obstructive Pulmonary Disease01:24

Chronic 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...

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Related Experiment Video

Updated: Jul 9, 2026

Dual Test Gas Pulmonary Diffusing Capacity Measurement During Exercise in Humans Using the Single-Breath Method
08:44

Dual Test Gas Pulmonary Diffusing Capacity Measurement During Exercise in Humans Using the Single-Breath Method

Published on: February 2, 2024

COPD diagnosis related to different guidelines and spirometry techniques.

Lennart Nathell1, Madelene Nathell, Per Malmberg

  • 1Personal Injury Prevention Section, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden. lennart.nathell@sto.boehringer-ingelheim.com

Respiratory Research
|December 7, 2007
PubMed
Summary

Diagnosing chronic obstructive pulmonary disease (COPD) in smokers varies significantly based on international guidelines. Using the best of slow vital capacity (SVC) or forced vital capacity (FVC) identifies more cases than FVC alone.

Related Experiment Videos

Last Updated: Jul 9, 2026

Dual Test Gas Pulmonary Diffusing Capacity Measurement During Exercise in Humans Using the Single-Breath Method
08:44

Dual Test Gas Pulmonary Diffusing Capacity Measurement During Exercise in Humans Using the Single-Breath Method

Published on: February 2, 2024

Area of Science:

  • Pulmonology
  • Respiratory Medicine
  • Clinical Diagnostics

Background:

  • Chronic Obstructive Pulmonary Disease (COPD) diagnosis relies on specific spirometric criteria.
  • International guidelines (NICE, GOLD, ERS) offer different diagnostic thresholds for COPD.
  • The choice between slow vital capacity (SVC) and forced vital capacity (FVC) may impact diagnostic yield.

Purpose of the Study:

  • To compare COPD diagnoses in smokers using different international guidelines.
  • To evaluate the impact of using SVC versus FVC on COPD diagnosis.
  • To assess the sensitivity of various guidelines in identifying COPD in current smokers.

Main Methods:

  • A questionnaire identified current smokers (≥8 cigarettes/day) from individuals on sick leave (>2 weeks).
  • Spirometry was performed on 3,887 participants.
  • COPD diagnoses were determined using NICE, GOLD, and ERS criteria, comparing SVC and FVC measurements.

Main Results:

  • Prevalence of COPD varied: 10.2% (NICE), 14.0% (GOLD), and 21.7% (ERS).
  • ERS criteria, utilizing the best of SVC or FVC, identified substantially more COPD cases.
  • SVC exceeded FVC post-bronchodilation in severe obstruction, while FVC was higher in normal or mildly obstructed lungs pre-bronchodilation.

Conclusions:

  • COPD diagnosis is highly dependent on the specific international guideline employed.
  • Relying solely on FVC may lead to underdiagnosis of COPD in a significant number of patients.
  • Utilizing the best available spirometric measure (SVC or FVC) enhances COPD detection rates.