Related Experiment Video
Updated: Aug 9, 2026

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus
Published on: March 6, 2019
Lung-function tests in neonates and infants with chronic lung disease: tidal breathing and respiratory control
David N Baldwin1, J Jane Pillow, Janet Stocks
1Centre for Child Health Research and Telethon Institute for Child Health Research, University of Western Australia, Perth, Western Australia, Australia. david.baldwin@health.wa.gov.au
Insights
Lung function tests in infants with respiratory issues reveal objective differences in tidal breathing and its control. These findings are crucial for understanding infant breathing disorders and sudden infant death risk.
Area of Science:
- Neonatal medicine
- Pediatric respiratory medicine
- Physiology
Background:
- Infants with acute neonatal respiratory disorders and chronic lung disease often experience breathing abnormalities.
- Understanding the control of breathing is critical for managing these conditions and assessing risks like sudden infant death.
Purpose of the Study:
- To critically review data on lung-function testing in infants with respiratory disorders.
- To discuss how tidal breathing measurements inform on the control of breathing in these infants.
Main Methods:
- Review of existing literature on lung-function testing in infants.
- Analysis of tidal breathing measurements and their relation to breathing control.
- Comparison of breathing parameters in infants with and without respiratory illness.
Main Results:
- Infants with acute and chronic respiratory illness exhibit measurable differences in tidal breathing and its control.
- Preterm infants and those with chronic lung disease show a higher incidence of significant apnea.
- These breathing control alterations are clinically significant and linked to increased risk.
Conclusions:
- Tidal breathing measurements provide objective insights into respiratory control in infants.
- Both maturation and disease processes significantly impact infant breathing control.
- Lung-function testing, specifically tidal breathing analysis, is valuable in managing neonatal respiratory disorders.
Abstract:
This paper is the fourth in a series of reviews that will summarize available data and critically discuss the potential role of lung-function testing in infants with acute neonatal respiratory disorders and chronic lung disease of infancy. The current paper addresses information derived from tidal breathing measurements within the framework outlined in the introductory paper of this series, with particular reference to how these measurements inform on control of breathing. Infants with acute and chronic respiratory illness demonstrate differences in tidal breathing and its control that are of clinical consequence and can be measured objectively. The increased incidence of significant apnea in preterm infants and infants with chronic lung disease, together with the reportedly increased risk of sudden unexplained death within the latter group, suggests that control of breathing is affected by both maturation and disease. Clinical observations are supported by formal comparison of tidal breathing parameters and control of breathing indices in the research setting.
Related Concept Videos
Pulmonary Function Tests
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
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
Pulmonary Cycle: Exhalation
Breathing
Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Assessment of Respiration
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like asthma or COPD,...
