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Measuring Inspiratory Effort In Mechanically Ventilated Children

Vincent Vandebergh1, Joshua Feder2, Katherine Reise3

  • 1Antwerp University Hospital, University of Antwerp.

Journal of Visualized Experiments : Jove
|June 29, 2026
PubMed

Insights

Accurately measuring a child's inspiratory effort during mechanical ventilation is key to preventing lung and diaphragm injury. This study presents bedside methods to quantify this effort, aiding in lung-protective strategies.

Area of Science:

  • Pediatric Critical Care Medicine
  • Respiratory Physiology

Background:

  • Optimizing mechanical ventilation in children requires accurate assessment of inspiratory effort.
  • Inadequate support can lead to diaphragm atrophy or fatigue, while over-assistance risks patient self-inflicted lung injury (P-SILI).

Purpose of the Study:

  • To demonstrate validated bedside techniques for quantifying inspiratory effort in mechanically ventilated children.
  • To differentiate between respiratory drive, tidal, and maximal inspiratory effort.

Main Methods:

  • Esophageal manometry as the reference standard for respiratory muscle effort quantification.
  • Alternative bedside approaches including diaphragm electrical activity (EAdi), airway occlusion maneuvers (P0.1, Pocc, PMI), and diaphragm ultrasound.
  • Maximal inspiratory pressure (MIP) as a measure of maximal effort.

Main Results:

  • Validated bedside techniques for quantifying inspiratory effort are presented.
  • Pediatric data for selected parameters are included, though evidence for safe thresholds remains limited.
  • Combined monitoring facilitates individualized mechanical ventilation titration.

Conclusions:

  • Accurate inspiratory effort assessment is crucial for lung- and diaphragm-protective ventilation in pediatric intensive care.
  • Bedside techniques offer practical alternatives to esophageal manometry for routine clinical use.
  • Further research is needed to define safe thresholds for effort parameters in children.

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