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  • Title: An investigation into the reduction in flow rate of intravenous fluid by antireflux valves.
    Author: Hall JM, Roberts FL.
    Journal: Anaesthesia; 2005 Aug; 60(8):797-800. PubMed ID: 16029229.
    Abstract:
    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.
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