Korean Journal of Anesthesiology

The Korean Society of Anesthesiologists (대한마취통증의학회)
권호 표지

Performance Characteristics of High Efficiency Fluid and Blood Warmer using Print Circuit Board Heater at Various Flow Rates

전자회로기판 히터를 이용한 고열효율 휴대용 수액 혈액 가온기의 유속에 따른 가온능력 및 안정성 평가

Jung, Sung-Won;Han, Tae-Hyung;Lee, Jin-Young;Kwak, In-Suk;Jung, Mi-Hwa;Won, Rim-Soo;Choi, Young-Ryong
정성원;한태형;이진영;곽인숙;정미화;원임수;최영룡

  • Published : 20061100
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Abstract

Background: Currently available warming devices are often heavy and cumbersome, requiring development of more portable, user friendly, high efficiency fluid and blood warmer. The intravenous fluid heating capabilities of a new, heat-plate print circuit board (PCB) based warmer at various low flow rates were tested. Methods: Model Joyother BM-1$^{\circledR}$ was investigated for normal saline (0.9% NaCl) and colloid at various infusion rates (60-6000 ml/hr). Final temperatures were measured by electronic thermometer after passing through the warmer. Effective warming was defined as a fluid temperature $\geq$ 32$^{\circ}C$. Ambient temperature was maintained at 22-25$^{\circ}C$. Degree of heating capability and temperature decrease were compared and correlated between different flow rates. Results: The device warmed the room temperature crystalloid and colloid efficiently. Its warming capability was continuously improved as the flow rates increased in all tested flow rates, reaching maximum 41$^{\circ}C$. After the warming, the temperature decrease showed high negative correlation with the flow rates. The extent of cooling was less in colloid. No overheating was noted at sudden brake. Conclusions: Joyother BM-1$^{\circledR}$ heated crystalloid and colloid sufficiently and safely enough for clinical application (exit temperature $\geq$ 35$^{\circ}C$) at various flow rates. The warming capacity and the length of the intravenous tube infusion system determined the efficiency of the warmer. Further study is warranted for the efficiency of warming for the blood and its element changes.

Keywords

References

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