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[目的]探讨4种方法在判断极低出生体重儿经外周静脉置入中心静脉导管(PICC)置管时是否误入动脉的效果。[方法]对97例行PICC穿刺的极低出生体重儿分为A组、B组、C组、D组,分别采用血气分析法、尾端抬高法、床边B超法、测压法,比较其判断准确率、判断时间及增加费用。[结果]4种方法在判断准确率的比较中测压法最高,床边B超法最低,差异有统计学意义(P<0.05);在判断时间比较中,尾端抬高法用时最短,床边B超法及测压法用时最长;费用增加尾端抬高法最少,测压法最多。[结论]尾端抬高法在4种方法中花费最少,时间最短,但在不能明确判断时应根据具体情况综合应用各种方法。
[Objective] To explore the effect of four methods on judging whether the infants with very low birth weight infiltrated into the central venous catheter (PICC) through the peripheral vein. [Method] The 97 low-birth-weight children with PICC puncture were divided into group A, group B, group C and group D. Blood gas analysis, caudal elevation, bedside B-ultrasound and manometry , Compared to determine the accuracy rate, determine the time and increase costs. [Results] The four methods showed the highest manometry, the lowest B-bed hypermetrism at bedside, the difference was statistically significant (P <0.05). In comparison of judging time, Bedside B method and manometry the longest; cost increases the tail lift the least, the most manometry. [Conclusion] The tail-end elevation method has the least cost and the shortest time among the four methods, but various methods should be comprehensively applied according to the specific situations when it can not be clearly judged.