Numerical study of variable lung ventilation strategies

TL;DR

This study investigates how different variable ventilation pressure strategies affect tidal volume, finding that uniform variability yields the best results, challenging the traditional constant-pressure approach in mechanical ventilation.

Contribution

It provides a comparative analysis of various variable ventilation pressure strategies, highlighting the effectiveness of uniform variability in improving tidal volume.

Findings

Uniform variability in pressure maximizes tidal volume

Variable strategies outperform constant pressure ventilation

Different distributions have distinct impacts on lung response

Abstract

Mechanical ventilation is used for patients with a variety of lung diseases. Traditionally, ventilators have been designed to monotonously deliver equal sized breaths. While it may seem intuitive that lungs may benefit from unvarying and stable ventilation pressure strategy, recently it has been reported that variable lung ventilation is advantageous. In this study, we analyze the mean tidal volume in response to different `variable ventilation pressure' strategies. We found that uniformly distributed variability in pressure gives the best tidal volume as compared to that of normal, scale- free, log normal and linear distributions.