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Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic 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...
Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
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...
Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration can...
Alterations in Respiration II01:30

Alterations in Respiration II

There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes include...
Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:

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Related Experiment Video

Updated: Jun 4, 2026

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
08:34

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

Published on: September 16, 2019

Medically unexplained dyspnea: partly moderated by dysfunctional (thoracic dominant) breathing pattern.

Rosalba Courtney1, Jan van Dixhoorn, Kenneth Mark Greenwood

  • 1School of Health Science, Royal Melbourne Institute of Technology (RMIT) University, Melbourne, Australia. courtney2107@optusnet.com.au

The Journal of Asthma : Official Journal of the Association for the Care of Asthma
|February 24, 2011
PubMed
Summary

Dysfunctional breathing (DB) and abnormal breathing patterns are linked, particularly in patients experiencing dyspnea. Treatment improved both breathing patterns and DB symptoms, especially for those with initial abnormal breathing.

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Area of Science:

  • Respiratory Medicine
  • Psychosomatic Medicine
  • Clinical Physiology

Background:

  • Dysfunctional breathing (DB) is associated with medically unexplained symptoms, including disproportionate dyspnea.
  • The Nijmegen Questionnaire (NQ) and abnormal breathing patterns are common assessments for DB.
  • The NQ's symptom categories may stem from various causes beyond hypocapnia, such as breathing pattern dysfunction.

Purpose of the Study:

  • To investigate the relationship between abnormal breathing patterns and Nijmegen Questionnaire (NQ) symptom categories.
  • To explore correlations between breathing pattern abnormalities and respiratory/dyspnea symptoms.

Main Methods:

  • 62 patients with medically unexplained complaints underwent assessment using the NQ and Manual Assessment of Respiratory Motion (MARM).
  • NQ subscales were created for tension, central neurovascular, peripheral neurovascular, and dyspnea.
  • Relationships between NQ scores (total and subscales) and MARM values were analyzed pre- and post-treatment.

Main Results:

  • Elevated NQ and MARM scores indicated dysfunctional breathing and thoracic dominance initially.
  • A correlation was found between MARM and NQ, with dyspnea symptoms specifically linked to abnormal MARM.
  • Treatment normalized both NQ and MARM scores, with significant improvements in NQ dyspnea subscale scores correlating with initial MARM values.

Conclusions:

  • Abnormal breathing patterns, particularly thoracic dominance, are associated with specific NQ symptoms, especially dyspnea.
  • The study highlights the link between breathing pattern dysfunction and subjective symptom reporting.
  • Therapeutic interventions effectively improved both breathing patterns and DB symptoms, underscoring the importance of addressing breathing mechanics.