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Accuracy of Intravenous Infusion Flow Regulators in the Prehospital Environment

机译：静脉注射流量调节器在预孢子环境中的准确性

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Objective: To assess the accuracy of multiple Intravenous Infusion Flow Regulators (IIFRs) at infusion rates and hanging heights common to the prehospital setting. Methods: Five different manufacturer's IIFRs were tested over a range of infusion rates while hanging at heights equivalent to the gurney pole, ambulance ceiling hook, and manufacturer's recommended height (if available). Each IIFR was run over a 15-minute period at each infusion rate and height three times. Drip effluent was collected and measured for comparison of volumes. Intra- and inter-device accuracy at different infusion rates and heights was calculated. Results: All devices deviated from the expected infusion volume regardless of infusion rate or height. There was inter-device variability across all IIFRs with some having reproducible though inaccurate volumes. Volumes were consistently below expected at lower heights and above expected at increased heights. Manufacturer recommended height guidelines provided slight improvements in accuracy. Conclusions: Significant deviations from expected IIFR volume were observed across all devices, flow rates, and heights in a static, laboratory environment. These findings would lend caution to the use of IIFRs as they could lead to inaccurate medication dosing (both over- or under-dosing) in the prehospital environment.
机译：目的：评估在输注速率下的多个静脉内输液流量调节剂（IIFR）的准确性，并悬挂在预卤化环境中的悬挂高度。方法：在一系列输液速率上测试了五种不同的制造商的IIFR，同时悬挂在相当于Gurney Pole，救护车天花板钩和制造商推荐的高度（如果有的话）。每个IIFR在每次输液速度和高度时经营15分钟。收集滴水流出物并测量以进行体积的比较。计算不同输液速率和高度的设备内和设备间精度。结果：无论输液速度还是高度，所有设备均偏离预期的输液量。在所有IIFR中都有一些具有可重复的IIFR的可变异性，但不准确的卷。在较低高度和高于高度的高度之前，持续预期的量持续下降。制造商推荐的高度指南提供了略微改善的准确性。结论：在静态，实验室环境中的所有器件，流速和高度中观察到预期IIFR体积的显着偏差。这些调查结果将谨慎向使用IIFRS，因为它们可能导致在预孢子环境中不准确的药物药物（过度或过量的药物）。

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