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"I would like to recommend a novel technique using the Vygon Arterial Leadercath polyethylene (PE) kit (Vygon, Ecouen, France) as a coaxial introducer for wider-bore cannula, in cases of difficult intravenous access (DIVA)" Stagg (2021).
Novel approach to difficult intravenous access

Extract:

“Both ultrasound and the Seldinger technique have been shown to improve outcomes during vascular access.1 2 International guidelines recommend ultrasound-guidance when difficulties are encountered or expected.1 3–5 However, difficulties still occur, and a broader array of adjuncts is likely to be useful. I would like to recommend a novel technique using the Vygon Arterial Leadercath polyethylene (PE) kit (Vygon, Ecouen, France) as a coaxial introducer for wider-bore cannula, in cases of difficult intravenous access (DIVA).”

Reference:

Stagg P. Difficult intravenous access: the Vygon Leadercath as an introducer for wider-bore cannula. BMJ Case Rep. 2021 Dec 30;14(12):e247521. doi: 10.1136/bcr-2021-247521. PMID: 34969811.