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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...
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

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
Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

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...
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 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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Related Experiment Video

Updated: May 29, 2026

Dual Test Gas Pulmonary Diffusing Capacity Measurement During Exercise in Humans Using the Single-Breath Method
08:44

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Pulmonary function testing in young children.

Hugo Escobar1, Terrence W Carver

  • 1Pediatric Pulmonary Department, The Children's Mercy Hospitals and Clinics, University of Missouri-Kansas City, USA. hescobar@cmh.edu

Current Allergy and Asthma Reports
|September 7, 2011
PubMed
Summary

Pulmonary function testing (PFT) is crucial for diagnosing respiratory conditions. New methods allow PFT in young children, improving early detection and management of lung diseases.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Medicine
  • Diagnostic Tools

Background:

  • Pulmonary function testing (PFT) is essential for managing respiratory diseases.
  • Spirometry is a common, noninvasive PFT method for cooperative children.
  • Advancements enable PFT in younger, less cooperative children.

Purpose of the Study:

  • To review available pulmonary function testing (PFT) techniques for young children.
  • To familiarize clinicians with PFT principles, applications, and limitations in pediatric populations.
  • To highlight the importance of PFT in early respiratory disease diagnosis.

Main Methods:

  • Review of existing literature on pediatric pulmonary function testing.
  • Discussion of spirometry, impulse oscillometry, gas dilution, and plethysmography.

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  • Focus on techniques applicable to children aged 2-5 years.

    • Main Results:

    • Simplified techniques and new equipment have expanded PFT use in young children.
    • Tidal breathing methods allow PFT in previously untested age groups.
    • Various PFT methods offer different insights into pediatric lung function.

    Conclusions:

    • Pulmonary function testing (PFT) is increasingly feasible and valuable in young children.
    • Clinicians can utilize diverse PFT techniques for early respiratory disease evaluation.
    • Understanding PFT principles, applications, and limitations is key for effective pediatric respiratory care.