Tag Archives: vascular access

Vascular & Osseous Access in Resuscitation

Cliff Reid and Geoff Healy discuss challenges in prehospital intraosseous and intravenous access, covering how to avoid pitfalls and what their own individual practice preferences are in the prehospital and in-hospital settings (22 mins).

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Two smaller lines may be quicker

Using Poiseuille’s law and standardized gauge sizes, an 18-gauge (g) intravenous catheter (IV) should be 2.5 times faster than a 20-g IV, but this is not borne out by observation, in vitro testing, and manufacturer’s data. A nice simple study … Continue reading

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External jugular vein a tricky one

Emergency medicine residents and paramedics cannulated patients who were anaesthetised. The external jugular vein (EJV) took longer to cannulate and had a higher failure rate than an antecubital vein. More than a quarter of the paramedics and a third of … Continue reading

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Fluid Flow Through Intravenous Cannulae

Published flow rates for cannulae are derived from a test in which fluid runs through a perfectly straight cannula into an open receptacle. Laminar flow is expected in such a model in which the Hagen-Poisseuille formula tells us that flow … Continue reading

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