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Related Experiment Video

Updated: Jun 16, 2026

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

When mechanical power remains high despite conventional lung-protective settings: a physiology-driven bedside

Tomasz Urbankowski¹, Marek Darowski¹

¹Department of Modeling and Supporting of Internal Organs Functions, Nalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, ul. Ks. Trojdena 4, 02-109 Warsaw, Poland.

Annals of Intensive Care

|June 15, 2026

Summary

High mechanical power in ventilated patients can harm lungs. This review guides clinicians to identify physiological causes and optimize settings, potentially using advanced therapies like prone positioning or extracorporeal support for ultra-protective ventilation.

Keywords:

End-expiratory lung volume Mechanical power Mechanical ventilation Prone positioning Ventilator-induced lung injury

Related Experiment Videos

Last Updated: Jun 16, 2026

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

Area of Science:

Critical Care Medicine
Respiratory Physiology
Mechanical Ventilation

Background:

Mechanical power quantifies energy delivered to the respiratory system during ventilation.
Elevated mechanical power is linked to ventilator-induced lung injury (VILI) and poorer patient outcomes.
A clinical challenge exists when mechanical power remains high despite lung-protective settings, risking gas exchange.

Purpose of the Study:

To provide a physiology-driven approach for managing persistently high mechanical power in mechanically ventilated patients.
To differentiate between modifiable ventilator settings and underlying physiological constraints causing high mechanical power.
To guide clinicians in optimizing ventilation strategies to minimize lung injury risk.

Main Methods:

Narrative review of physiological principles and clinical strategies.
Systematic bedside approach to assess and manage mechanical power.
Discussion of interventions including PEEP titration, prone positioning, and respiratory drive management.

Main Results:

Persistent high mechanical power often stems from physiological factors, not just ventilator settings.
Individualized PEEP titration is crucial for reduced end-expiratory lung volume.
Prone positioning and pressure optimization benefit heterogeneous lungs; managing respiratory drive is key in assisted ventilation.

Conclusions:

Clinicians should verify lung-protective settings and identify physiological drivers of high mechanical power.
Targeted physiological interventions can mitigate injury risk even if mechanical power cannot be lowered.
Extracorporeal support may be necessary for ultra-protective ventilation when other measures fail.