Comparative study of the different factors influencing resistance of tubes to gas flow
Hendrickx, H.H.
Acta Anaesthesiologica Belgica 31(4): 307-315
1980
ISSN/ISBN: 0001-5164 PMID: 7223353 Document Number: 163362
With the help of a pneumotachograph and a pressure transducer the influences of tube diameter, tube length, tube shape, connectors of different shape and kinking are quantified. The influence of different gases on resistance is calculated. With the help of the shown data one can predict the influence of changes of the different factors. Rules for optimalisation are given and their clinical significance is discussed. Most significant factors are diameter and length of the tube, kinking over 50% and kinematic viscosity and density of the used gas mixture.