Heating capabilities of the Hotline and Autoline at low flow rates

Paediatric Anaesthesia
J SchnoorR Rossaint

Abstract

At low flow rates, fluid warmers using coaxial warming tubes are superior in preventing heat loss. This laboratory investigation was performed in order to compare the heating capabilities of two coaxial fluid warmers. The Hotline and the Autoline were investigated by using normal saline at various flow rates (10-99 ml x h(-1)). Final infusion temperatures were measured six times in a row at the end of the tubing by using a rapid-response thermometer. Final temperatures were compared with those of infusions, which passed through disposable i.v. tubing covered and warmed using an 'off label' convective air warming system (WarmTouch). Measurements were performed at two different room temperatures (20 and 24 degrees C). Each group was analyzed with respect to differences between various flow rates as well as differences between the groups at comparable flow rates by using a three-way anova with multiple comparisons according to Tukey's procedure. Significance was defined at P < 0.05. Both devices heat infusions at low flow rates efficiently above 34 degrees C, with the Hotline being more effective than the Autoline (P < 0.0001). Except for the lowest flow rate (10 ml x h(-1)), the Hotline delivered infusion temperatures between 38 ...Continue Reading

References

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Aug 21, 2004·Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS·J SchnoorR Rossaint

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Citations

May 30, 2014·Journal of the American Veterinary Medical Association·Rebecca A LeeHsin-Yi Weng
May 26, 2010·Korean journal of anesthesiology·Seong Ho LeeChae Sun Kim
Feb 10, 2012·Journal of Veterinary Emergency and Critical Care·Vivian ChiangMatthew S Mellema
Jul 25, 2021·International Journal of Environmental Research and Public Health·Marcus NemethAnselm Bräuer

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