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An investigation into the reduction in flow rate of intravenous fluid by antireflux valves
Author(s) -
Hall J. M.,
Roberts F. L.
Publication year - 2005
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.2005.04239.x
Subject(s) - medicine , cannula , reduction (mathematics) , anesthesia , volumetric flow rate , surgery , mechanics , physics , geometry , mathematics
Summary We have investigated the extent to which antireflux (non‐return) valves impede the maximum flow rate of crystalloid in intravenous infusion systems when administered either under gravity or with 300 mmHg added pressure. When used with a 16G cannula, a reduction in flow rate of 19–38% was consistently seen. With a 20G cannula, no significant reduction in flow was found. The valve tested that produced the least reduction in flow was the Westcott Sae‐flo ® valve.