A self-regulated expiratory flow device for mechanical ventilation: a bench study.

ABSTRACT:

Introduction

Unregulated expiratory flow may contribute to ventilator-induced lung injury. The amount of energy dissipated into the lungs with tidal mechanical ventilation may be used to quantify potentially injurious ventilation. Previously reported devices for variable expiratory flow regulation (FLEX) require, either computer-controlled feedback, or an initial expiratory flow trigger. In this bench study we present a novel passive expiratory flow regulation device.

Methods

The device was tested using a commercially available mechanical ventilator with a range of settings (tidal volume 420 ml and 630 ml, max. inspiratory flow rate 30 L/min and 50 L/min, respiratory rate 10 min^-1, positive end-expiratory pressure 5 cmH₂O), and a test lung with six diff

SUBMITTER: Yang L 

PROVIDER: S-EPMC11484996 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature