Do SmartSite antireflux valves limit the flow rate of 0.9% normal saline through intravenous cannulas?

作者：Liu David^*; Keijzers Gerben

来源：European Journal of Emergency Medicine, 2013, 20(2): 123-125.

DOI：10.1097/MEJ.0b013e32835730fc

• catheters
• emergency medicine
• fluid therapy
• resuscitation
• trauma

The aim of the study was to determine whether the placement of a SmartSite antireflux valve between a bag of fluid with line giving set and an intravenous cannula decreases the flow rate. Fluid flow rates were compared in paired experiments with and without an antireflux valve using a pressure infuser or allowing fluid to flow by gravity only for four different sizes of intravenous cannulas (20-14 G). Antireflux valves significantly decreased the fluid flow rates for all cannula sizes, irrespective of whether a pressure infuser was used. The decrease in the flow rate was most marked for larger cannulas [ gravity only: 14 G: 52% (95% confidence interval (Cl): 37-68), 16 G: 39% (95% Cl: 34-43); pressure bag: 14 G: 74% (95% Cl: 70-78), 16 G: 56% (95% Cl: 54-57); all P%26lt;0.001]. Where maximum fluid flow rates are desirable, clinicians should consider not using an antireflux valve.

• 出版日期2013-4