Thelin O P, Karanth S, Pourcyrous M, Cooke R J
Department of Pediatrics, University of Tennessee, Memphis.
J Perinatol. 1993 Jan-Feb;13(1):65-7.
The butterfly, or scalp vein infusion set, is a widely used and convenient way to collect arterial blood gas samples in neonates. Analyzing arterial blood gas values by using this technique in a clinical situation, we obtained elevated values of PO2 in blood samples collected and measured from butterfly tubing in comparison with tuberculin syringe controls. Diffusion of gas through the polyvinylchloride tubing was suggested and proved by a study of pairs of butterfly and tuberculin syringes filled with venous blood from the blood bank. In conclusion, the butterfly gives falsely elevated PO2 values as a result of gas diffusion and is not a reliable technique for arterial blood gas sampling in neonates.
蝶形针，即头皮静脉输液装置，是一种在新生儿中广泛使用且便捷的采集动脉血气样本的方法。在临床情况下使用该技术分析动脉血气值时，我们发现，与结核菌素注射器对照组相比，从蝶形针导管采集并测量的血样中PO2值升高。通过对成对的装有血库静脉血的蝶形针和结核菌素注射器进行研究，提示并证实了气体通过聚氯乙烯导管的扩散现象。总之，由于气体扩散，蝶形针会给出错误升高的PO2值，并非新生儿动脉血气采样的可靠技术。
