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Related Concept Videos

Pulmonary Function Tests01:25

Pulmonary Function Tests

383
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...
383
Respiratory Volumes01:15

Respiratory Volumes

1.6K
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...
1.6K
Lung Capacity01:47

Lung Capacity

51.0K
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.
51.0K
Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

351
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...
351
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

1.7K
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...
1.7K
Respiratory Capacities01:24

Respiratory Capacities

857
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...
857

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Updated: Jul 28, 2025

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus
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Lung Function Tests in Infants and Children.

Kana Ram Jat1, Sheetal Agarwal2,3

  • 1Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, 110029, India. drkanaram@gmail.com.

Indian Journal of Pediatrics
|June 1, 2023
PubMed
Summary
This summary is machine-generated.

Lung function tests offer objective insights into pediatric lung health, aiding diagnosis and monitoring from infancy through adolescence. Proper interpretation of spirometry, forced oscillation technique (FOT), and other pulmonary function tests (PFTs) is crucial for effective treatment.

Keywords:
Diffusion capacityImpulse oscillometryInfant PFTMultiple wash outPediatricsPulmonary function testsSpirometry

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Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology

Background:

  • Lung function testing is vital for diagnosing and monitoring pediatric lung diseases.
  • Technological advancements enable objective assessment of lung health across all age groups, from neonates to adults.

Purpose of the Study:

  • To review current lung function tests applicable to infants and children.
  • To highlight the diagnostic and monitoring capabilities of various pulmonary function tests (PFTs).

Main Methods:

  • Narrative review of available literature on pediatric lung function testing.
  • Discussion of spirometry, peak expiratory flow rate (PEFR), forced oscillation technique (FOT)/impulse oscillometry (IOS), infant PFT equipment, diffusion capacity for carbon monoxide (DLCO), and lung volume assessment techniques.

Main Results:

  • Spirometry and PEFR are standard for children over six, diagnosing obstructive and restrictive diseases.
  • FOT/IOS are feasible in preschool children, primarily for asthma assessment.
  • Infant PFT equipment, DLCO, and lung volume techniques (body plethysmography, multiple washout) offer further diagnostic capabilities.

Conclusions:

  • Lung function tests are essential for pediatric respiratory care, requiring expertise for accurate performance and interpretation.
  • Correct interpretation and clinical correlation of PFT results are paramount for optimal patient outcomes.