Jain A, Rutter N
Department of Neonatal Medicine, Nottingham City Hospital, Nottingham NG5 1PB.
Arch Dis Child Fetal Neonatal Ed. 1999 May;80(3):F243-5. doi: 10.1136/fn.80.3.f243.
To investigate whether it would be safe to extend the currently recommended area of sampling to the whole heel in neonates.
Eighty newborn infants were studied, weight range 0.56 to 4.34 kg, gestation 24 to 42 weeks. Ultrasound scanning was used to measure the shortest distance between the skin and the perichondrium of the calcaneum.
The shortest depth of perichondrium was in the centre of the heel and ranged from 3 to 8 mm. In 78 of the 80 infants the distance was 4 mm or more. There was a small but significant positive correlation with weight.
Standard automated lancets for preterm use that puncture to a depth of 2.4 mm may be safely used anywhere over the plantar surface of the heel. The posterior aspect of the heel should be avoided. Reducing the density of heel pricks should reduce the associated pain.
探讨将目前推荐的采样区域扩展至新生儿整个足跟是否安全。
研究了80例新生儿，体重范围为0.56至4.34千克，孕周为24至42周。采用超声扫描测量皮肤与跟骨骨膜之间的最短距离。
骨膜的最短深度位于足跟中央，范围为3至8毫米。80例婴儿中有78例该距离为4毫米或以上。与体重呈小但显著的正相关。
用于早产的标准自动采血针，穿刺深度为2.4毫米，可安全用于足跟足底表面的任何部位。应避免足跟后部。减少足跟针刺的密度应可减轻相关疼痛。
