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Related Concept Videos

Chronic Obstructive Pulmonary Disease I: Introduction01:23

Chronic 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...
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
Common Respiratory Disorders01:31

Common Respiratory Disorders

Respiratory disorders, a prevalent health concern globally, are generally divided into two primary categories: upper and lower respiratory tract disorders. The categorization is based on the area of the respiratory system they affect.
Upper respiratory disorders impact the airways above the vocal cords, encompassing areas like the nose, sinuses, and throat. Various conditions fall under this category, including the common cold and allergic rhinitis. These disorders can stem from several causes,...
Asthma-I: Introduction01:29

Asthma-I: Introduction

Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
Types of Toxins01:36

Types of Toxins

Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...

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Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
08:17

Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure

Published on: August 25, 2017

Respiratory problems - occupational and environmental exposures.

Ryan F Hoy1

  • 1Department of Allergy, Immunology and Respiratory Medicine, The Alfred Hospital and Research Fellow, Department of Epidemiology and Preventive Medicine, Faculty of Medicine, Nursing and HealthSciences, Monash University, Melbourne, Victoria. r.hoy@alfred.org.au

Australian Family Physician
|November 13, 2012
PubMed
Summary

Exposure to airborne contaminants in occupational and environmental settings can cause immediate or delayed respiratory problems. Clinicians should inquire about these exposures in patients with breathing issues, as they can cause or worsen conditions like asthma.

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Area of Science:

  • Environmental Health
  • Occupational Medicine
  • Pulmonology

Background:

  • The respiratory system processes large volumes of air daily, making it vulnerable to airborne contaminants.
  • Air quality significantly impacts respiratory health, affecting all levels from the nasal passages to the alveoli.

Observation:

  • Common occupational and environmental exposures are identified as potential causes of respiratory ailments.
  • The article highlights the diverse range of airborne substances that can negatively impact lung function.

Findings:

  • Exposure effects can manifest immediately or after a long latency period, as seen in asbestos-related lung diseases.
  • Airborne contaminants are established causes of respiratory diseases and can exacerbate existing conditions such as asthma and chronic obstructive pulmonary disease (COPD).

Implications:

  • Healthcare providers should maintain a high index of suspicion for environmental and occupational exposures in patients presenting with respiratory symptoms.
  • Prompt identification of exposure sources is crucial for managing and preventing respiratory diseases, especially in cases of new-onset symptoms.