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Related Concept Videos

Pulmonary Function Tests01:25

Pulmonary Function Tests

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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.
PFTs involve using a spirometer, a...
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Physical Assessment of the Respiratory Tract I: Health History01:28

Physical Assessment of the Respiratory Tract I: Health History

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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...
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Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

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

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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.
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Respiratory Volumes and Capacities01:22

Respiratory Volumes and Capacities

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

Physical Assessment of the Respiratory Tract II: Inspection

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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...
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Conducting Respiratory Oscillometry in an Outpatient Setting
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How "healthy" should children be when selecting reference samples for spirometry?

Sooky Lum1, Vassiliki Bountziouka2, Samatha Sonnappa3

  • 1Respiratory, Critical Care and Anaesthesia section (Portex Unit), University College London, Institute of Child Health, London, UK. s.lum@ucl.ac.uk.

The European Respiratory Journal
|February 21, 2015
PubMed
Summary
This summary is machine-generated.

Pediatric spirometry reference samples can be more inclusive. Including children with mild respiratory symptoms or specific birth histories broadens generalizability without significantly altering results.

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Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology

Background:

  • Establishing accurate reference values for spirometry in children is crucial for diagnosing lung diseases.
  • Defining
  • healthy
  • criteria for reference populations can impact the generalizability of spirometry data.

Purpose of the Study:

  • To determine the necessary health criteria for selecting pediatric reference samples for spirometry.
  • To assess the impact of including children with certain health conditions or birth histories on spirometry reference values.

Main Methods:

  • Anthropometry and spirometry were measured in 5-11-year-old UK schoolchildren.
  • Forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) were analyzed using Global Lung Initiative 2012 equations.
  • The effects of various exclusion criteria on z-score distributions were examined.

Main Results:

  • Excluding children with current/chronic lung disease yielded data from 1901 children.
  • Using the GLI-2012 equations, mean z-scores for FEV1 and FVC approximated 0±1 in healthy children.
  • Including children born preterm, with low birthweight, prior asthma, or mild symptoms increased sample size by 25% with similar results.

Conclusions:

  • Paediatric spirometry reference samples can be relatively inclusive, excluding only clear-cut respiratory diseases.
  • More inclusive criteria enhance the generalizability of spirometry reference data to the broader pediatric population.