• Am J Emerg Med · Oct 2012

    Comparative Study

    EZ-IO in the ED: an observational, prospective study comparing flow rates with proximal and distal tibia intraosseous access in adults.

    • Tan Boon Kiat Kenneth BK Department of Emergency Medicine, Singapore General Hospital, Singapore, 169608 Singapore. mk82001@yahoo.com.sg, Stephanie Chong, Zhi Xiong Koh, and Ong Marcus Eng Hock ME.
    • Department of Emergency Medicine, Singapore General Hospital, Singapore, 169608 Singapore. mk82001@yahoo.com.sg
    • Am J Emerg Med. 2012 Oct 1; 30 (8): 1602-6.

    IntroductionIntraosseous (IO) access is an important alternative to conventional intravenous access when intravenous access is difficult.MethodsA nonrandomized, prospective, observational study comparing flow rates with distal and proximal tibia IO access in adults using the EZ-IO-powered drill device. The proximal tibia was the first site of insertion, and a second IO was inserted in the distal tibia if clinically indicated. Intravenous saline infusion was started for all patients, initially without, then with a pressure bag device applied.ResultsFrom September 19, 2008 to November 3, 2010, 22 patients were recruited, with 20 proximal tibial and 22 distal tibia insertions. Two patients had only distal tibia IO insertions. Five distal tibia and 3 proximal tibia insertions had no flow when initiating normal saline infusion without pressure. Upon comparing the mean flow rates without pressure bag, it is significantly faster in the proximal tibia, 4.96 mL/min, compared with distal tibia, 2.07 ml/min, difference of 2.89 ml/min (95% CI 1.20-4.58). Flow rates with pressure bags also revealed a similar result. Flow rates in the proximal tibia were significantly faster, 7.70 ml/min to that of distal tibia, 3.80 ml/min, difference of 3.89 ml/min (95% CI 1.68-6.10). In both proximal and distal tibia groups, the flow rates are also significantly faster with pressure bags compared with without.ConclusionFlow rates are significantly faster in the proximal tibia compared with the distal tibia. In addition, flow rates with pressure bags are significantly faster than without pressure bags in both groups.Copyright © 2012 Elsevier Inc. All rights reserved.

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