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- Title
An Evaluation of the Effect of a Kinked Cannula on Intravenous Cannula Flow Rates.
- Authors
Nagle, Ruth; Schreiber, Kevin; Said, Tarek; Cassidy, Seamus; Tierney, Eamon
- Abstract
Objective: To determine to what extent a kink would affect rates of saline flow through different gauges of intravenous cannulae. Design: An Observational Study. Setting: RCSI-MUB Laboratory. Method: The flow rates of normal saline through Becton Dickinson (BD) Venflon cannulae sizes 22, 20, 18, 16 and 14 gauges (G) were measured. A kink was introduced in all cannulae immediately proximal to the catheter hub, and the flow rates were measured again. Result: Statistical analysis showed a confidence interval overlap for flow rates in nonkinked versus kinked catheters sizes 14 G, 16 G and 18 G indicating that kinking does not significantly alter flow rate in these catheters. Ambiguity in the 20 G catheter data suggests that a greater sample size should be examined. Analysis of the 22 G catheter data showed a statistically significant decrease in flow rate when kinked. Conclusion: Kinking was shown to have negligible effect on flow rates in 14 G, 16 G and 18 G catheters. No definitive conclusion could be drawn from 20 G data, although it was found that kinking decreased 22 G catheter flow by 9.94% on average.
- Subjects
SALINE injections; CATHETERS
- Publication
Bahrain Medical Bulletin, 2015, Vol 37, Issue 3, p42
- ISSN
1012-8298
- Publication type
Article
- DOI
10.12816/0014440