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Related Concept Videos

Pulmonary Function Tests01:25

Pulmonary Function Tests

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...
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...
Respiratory Volumes and Capacities01:22

Respiratory Volumes and Capacities

The respiratory system is responsible for the intake of oxygen and the expulsion of carbon dioxide from the body. Respiratory volumes describe the volume of air in the lungs at different phases of the respiratory cycle. Tidal volume is the air breathed in and out during normal, quiet breathing. Inspiratory reserve volume is the air that can be forcefully inspired beyond the tidal volume. In contrast, expiratory reserve volume refers to the air that can be expelled from the lungs after a normal...
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...
Respiratory Capacities01:24

Respiratory Capacities

Respiratory capacities are crucial indicators of lung function, representing the maximum amount of air an individual's respiratory system can handle during various breathing phases.
One key metric is the Inspiratory Capacity (IC), which represents the maximum amount of air that can be inhaled with full effort. IC is calculated by summing the tidal volume and inspiratory reserve volume, typically ranging from 2.4 to 3.6 liters.
The Functional Residual Capacity (FRC) represents the air in the...
Respiratory Volumes01:15

Respiratory Volumes

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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Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults
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Spirometry reference values for Navajo children ages 6-14 years.

David A Arnall1, Verdell Kanuho, Christina Interpreter

  • 1Physical Therapy Department, East Tennessee State University, Johnson City, Tennessee 37614-1709, USA. arnall@etsu.edu

Pediatric Pulmonology
|April 11, 2009
PubMed
Summary

This study developed new spirometry reference equations for Navajo children, crucial for diagnosing lung disease in a population with high respiratory illness rates. These tribe-specific nomograms improve accuracy in assessing pediatric pulmonary function.

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14:49

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Area of Science:

  • Pulmonary Medicine
  • Pediatric Health
  • Native American Health

Background:

  • Respiratory diseases are a leading cause of illness and death among the Navajo Nation.
  • Spirometry is essential for diagnosing pulmonary conditions.
  • Existing pulmonary nomograms may not accurately represent Navajo children.

Purpose of the Study:

  • To create new, age- and race-specific pulmonary nomograms for Navajo children.
  • To establish population-specific and tribe-specific reference equations for spirometry.
  • To improve the diagnosis of respiratory diseases in this demographic.

Main Methods:

  • Conducted spirometry on 558 healthy Navajo children (ages 6-14).
  • Developed nomograms for forced vital capacity (FVC), forced expiratory volume in 1 sec (FEV1), and FEV1/FVC ratio.
  • Ensured data quality through American Thoracic Society standards.

Main Results:

  • Lung function parameters (FVC, FEV1) increased with height.
  • Height and its logarithm were significant predictors in gender-specific models.
  • Established new spirometry reference equations for Navajo children aged 6-14.

Conclusions:

  • The new population-specific spirometry equations are recommended for Navajo children.
  • Using these nomograms can enhance diagnostic accuracy for pediatric pulmonary diseases.
  • NHANES III equations may not cause significant misclassification if maximal effort is ensured.