Related Experiment Video

Updated: Jan 15, 2026

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS
06:22

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS

Published on: April 7, 2021

3.8K

Reproducibility of Mechanical Power Equations in Ventilated Critically Ill Children

Agnes K Maas1, Jonathan W J Melger2, David M P van Meenen3

  • 1Department of Pediatric Intensive Care, Emma Children's Hospital of the Amsterdam University Medical Centers, Amsterdam, The Netherlands.

Pediatric Critical Care Medicine : a Journal of the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies
|October 14, 2025
PubMed

Insights

Three mechanical power (MP) equations accurately reproduced the geometric method for calculating MP in critically ill children on invasive pressure-controlled ventilation (PCV). This finding supports their use in pediatric intensive care units (PICUs).

Area of Science:

  • Pediatric Critical Care Medicine
  • Respiratory Mechanics
  • Mechanical Ventilation

Background:

  • Accurate measurement of mechanical power (MP) is crucial for managing critically ill children on mechanical ventilation.
  • Existing MP equations require validation against established methods like the geometric method.

Purpose of the Study:

  • To evaluate the reproducibility of three different mechanical power (MP) equations compared to the geometric method in children receiving invasive pressure-controlled ventilation (PCV).

Main Methods:

  • A prospective, exploratory study was conducted in a single-center pediatric intensive care unit (PICU).
  • Thirty-seven critically ill children (<18 years) on invasive PCV were included.
  • Three MP equations (simplified, comprehensive, linear) were compared with the geometric method using Bland-Altman and intraclass correlation coefficient (ICC) analyses.

Main Results:

  • All three MP equations demonstrated excellent agreement with the geometric method, with ICCs consistently above 0.99 (p < 0.001).
  • Mean differences between the equations and the geometric method were small and within acceptable clinical ranges.
  • The study included children with a median age of 12 months.

Conclusions:

  • The simplified, comprehensive, and linear MP equations are reliable and reproducible for calculating mechanical power in critically ill children on invasive PCV.
  • These validated equations can be utilized in clinical practice to monitor respiratory mechanics in pediatric patients.
Abstract

Keywords:
childrenmechanical powermechanical ventilationpediatric intensive care unitreproducibility of resultsventilator

More Related Videos

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics12:09

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

2.0K
Author Spotlight: Exploring Venous Waveforms in Porcine Models to Tackle Volume Overload in Medicine06:09

Author Spotlight: Exploring Venous Waveforms in Porcine Models to Tackle Volume Overload in Medicine

Published on: January 12, 2024

984

Related Concept Videos

Mechanical Ventilation I: Indication and Settings01:29

Mechanical Ventilation I: Indication and Settings

Mechanical ventilation is a life-saving technique for managing acute respiratory failure and other respiratory complications. The process involves using a machine known as a ventilator to supply oxygen to the lungs and assist in removing carbon dioxide. It serves as a bridge to long-term mechanical ventilation or a temporary measure until ventilatory support is discontinued. The ventilator can maintain this function for a prolonged period, providing critical support for patients until they can...
2.5K
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...
2.8K
Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
625
Assessment of Ventilation I: Respiratory Rate01:20

Assessment of Ventilation I: Respiratory Rate

Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
1.9K