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Related Concept Videos

Lung Capacity01:47

Lung Capacity

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The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
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Pulmonary Function Tests01:25

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Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
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Respiratory Capacities01:24

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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...
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Pneumothorax-II01:27

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Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
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Respiratory Volumes and Capacities I01:26

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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...
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Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
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Lung function and functional exercise capacity in underground semi-precious stone mineworkers.

Tamires Patrícia Souza1,2, Rafaela Souza3, Guilherme Watte1

  • 1Programa de Pós-Graduação em Ciências Pneumológicas, Universidade Federal do Rio Grande do Sul, RS, Brasil.

Work (Reading, Mass.)
|May 18, 2020
PubMed
Summary

Semi-precious stone miners exposed to silica show reduced lung function but preserved exercise capacity. Prolonged mining work, silicosis diagnosis, and lower education are linked to impaired lung function.

Keywords:
6-minute walk testPneumoconiosisexercisesilicosis

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Area of Science:

  • Occupational Medicine
  • Pulmonary Medicine
  • Environmental Health

Background:

  • Semi-precious stone mining poses risks of occupational lung disease.
  • Inhaled silica's impact on miners' exercise capacity is not fully understood.

Purpose of the Study:

  • Assess lung function and exercise capacity in current miners.
  • Identify factors contributing to functional impairment in this population.

Main Methods:

  • Cross-sectional study of 193 miners in Brazil.
  • Collected medical and occupational data, including dust exposure history and chest X-rays for silicosis diagnosis.
  • Conducted spirometry and 6-minute walk tests (6MWT).

Main Results:

  • Silicosis diagnosed in 26.4% of workers; average mining tenure was 14.7 years.
  • Spirometry revealed normal, restrictive, or obstructive patterns in 75.1%, 13%, and 9.3% respectively.
  • Silicosis diagnosis and longer mining duration negatively impacted lung function (FEV1), while exercise capacity remained preserved.

Conclusions:

  • Miners exposed to silica exhibit impaired lung function but maintained exercise capacity.
  • Factors associated with reduced lung function include extended mining work, silicosis, and lower educational attainment.