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Related Concept Videos

Pulmonary Function Tests01:25

Pulmonary Function Tests

471
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.
PFTs involve using a spirometer, a...
471
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

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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
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Respiratory Volumes01:15

Respiratory Volumes

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Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
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Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

491
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...
491
Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

2.0K
Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
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Physical Assessment of the Respiratory Tract I: Health History01:28

Physical Assessment of the Respiratory Tract I: Health History

524
Physical assessment of the respiratory tract is critical to patient care. It allows healthcare professionals to identify and manage various respiratory conditions. The process involves a combination of subjective and objective data collection.
Subjective Data
Subjective data provides vital information about the patient's health history and symptoms. This data is typically collected through interviews in which patients describe their experiences, symptoms, and concerns.
Health history and...
524

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Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults
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Longitudinal Changes in Spirometry in Deployed Air Force Firefighters.

Andrew J Berglund1, John Kim, Robert J Walter

  • 1Pulmonary/Critical Care Service, Department of Medicine, Wright Patterson Medical Center, Wright Patterson Air Force Base, Ohio (Dr Berglund); Internal Medicine Service, Department of Medicine, Mike O'Callaghan Military Medical Center, Nellis Air Force Base, Nevada (Dr Kim); and Pulmonary/Critical Care Service, Department of Medicine, Brooke Army Medical Center, Joint Base San Antonio Fort Sam Houston, Texas (Dr Walter, Dr McCann, Dr Morris).

Journal of Occupational and Environmental Medicine
|August 30, 2021
PubMed
Summary
This summary is machine-generated.

Deployed Air Force firefighters showed no significant lung function decline post-deployment. Spirometry results indicate that deployment does not appear to cause measurable changes in lung capacity or airflow for this group.

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Area of Science:

  • Occupational Health
  • Pulmonary Medicine
  • Military Health

Background:

  • Service members deployed to southwest Asia frequently experience inhalational exposures.
  • Air Force firefighters are a population with potential occupational exposure risks during deployment.

Purpose of the Study:

  • To investigate whether deployment to southwest Asia is associated with a decline in lung function among Air Force firefighters.
  • To assess changes in spirometry parameters in deployed versus non-deployed firefighters.

Main Methods:

  • Retrospective review of medical charts.
  • Analysis of spirometry data from 302 Air Force firefighters with at least two recorded pulmonary function tests.
  • Comparison of lung function changes between deployed and never-deployed firefighter groups.

Main Results:

  • No significant changes were observed in forced expiratory volume at 1 second (FEV1), forced vital capacity (FVC), or mid-expiratory flow (FEF25-75) for deployed firefighters.
  • Mean changes in FEV1, FVC, and FEF25-75 for deployed firefighters were -1.01%, -0.46%, and -0.13% respectively.
  • Non-deployed firefighters showed minimal changes in FEV1 (+0.08%) and FVC (+0.72%), with a slight decrease in FEF25-75 (-0.66%).

Conclusions:

  • The study found no evidence to suggest that deployment significantly impacts lung function as measured by spirometry in Air Force firefighters.
  • Spirometry data did not reveal a detrimental effect of deployment on respiratory health in this cohort.