• Claire Helm and Mark Gillett.
• Emergency Department, Nepean Hospital, Sydney, New South Wales, Australia.
• Emerg Med Australas. 2015 Aug 1;27(4):312-6.

ObjectiveStandard ampoules and prefilled syringes of adrenaline are widely available in Australasian EDs for use in cardiac arrest. We hypothesise that prefilled syringes can be administered more rapidly and accurately when compared with the two available standard ampoules.MethodsThis is a triple arm superiority study comparing the time to i.v. administration and accuracy of dosing of three currently available preparations of adrenaline.ResultsIn their standard packaging, prefilled syringes were on average more than 12 s faster to administer than the 1 mL 1:1000 ampoules and more than 16 s faster than the 10 mL 1:10,000 ampoules (P < 0.01 in both comparisons). With packaging removed, the time to administration was equal for the 1 mL (1:1000) ampoule and the prefilled syringe. Accuracy of dosing was excellent with both the 10 mL (1:10 000) ampoules and prefilled syringes. The 1 mL (1:1000) ampoules delivered a small number of markedly inaccurate doses, but these did not reach statistical significance.ConclusionsThe speed of administration of adrenaline utilising a Minijet (CSL Limited, Parkville, Victoria, Australia) is faster than using adrenaline in glass ampoules presented in their plastic packaging. Removing the plastic packaging from the 1 mL (1 mg) ampoule might result in more rapid administration similar to the Minijet. Resuscitation personnel requiring rapid access to adrenaline should consider storing it as either Minijets or ampoules devoid of packaging. These results might be extrapolatable to other clinical scenarios, including pre-hospital and anaesthesia, where other drugs are required for rapid use.© 2015 Australasian College for Emergency Medicine and Australasian Society for Emergency Medicine.

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