Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22485
Title: Secretion movement during manual lung inflation and mechanical ventilation
Authors: Jones, AYM
Keywords: Model, tube, airways
Upper airways, sputum movement
Ventilation, artificial
Issue Date: 2002
Publisher: Elsevier
Source: Respiratory physiology and neurobiology, 2002, v. 132, no. 3, p. 321-327 How to cite?
Journal: Respiratory physiology and neurobiology 
Abstract: This project aimed to investigate the direction of artificial sputum movement during mechanical ventilation (MV) and bagging (MH) using a tube model. Three solutions of artificial sputum (ultrasonic gel, viscosity 100, 200 and 300 poise (P)) were prepared. About 1 ml of gel was placed in a glass tube connected to a test lung at one end and, via a pneumotachograph, to either a mechanical ventilator or a self-inflating bag, at the other. The position of the gel in the tube was recorded before and after 20 artificial breaths. Simultaneous breath-to-breath respiratory mechanics were measured. The procedure was repeated three times for each gel viscosity, with a fresh experimental set up for each measurement. Results showed that the distance travelled from the lung was significantly greater with MH compared with MV (P<0.001). The lower the gel viscosity, the further the gel moved from the lung with both ventilatory modes (P<0.001). MH was superior to MV for secretion mobilisation in a tube model.
URI: http://hdl.handle.net/10397/22485
ISSN: 1569-9048
EISSN: 1878-1519
DOI: 10.1016/S1569-9048(02)00071-X
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