Leidig E
Abteilung Neonatologie, Universitäts-Kinderklinik, Tübingen, FRG.
Pediatr Radiol. 1989;19(3):169-72. doi: 10.1007/BF02388648.
In 25 healthy newborns transcutaneous Doppler ultrasound measurements (Duplex-Scan) of flow velocities in the superior mesenteric artery were performed to define normal values and to investigate the response of intestinal blood flow to feeding. The diameter of the vessel was measured from real-time and M-mode imaging: mean value 3.2 mm. The analysis of the flow patterns before and after feeding revealed a significant change of the blood flow with increase of the peak velocity (Vp) (from 57 +/- 3.1 cm/sec to 97 +/- 11.5 cm/s) and the mean velocity (Vm) (from 22 +/- 1.6 cm/s to 41 +/- 4.1 cm/s). The pulsatility index decreased from 0.85 in the fasting baby to 0.73 45 min after feeding. The Vm was correlated with the post natal age and depended upon the quantity and quality of the meals. Neonates when fed only with tea/glucose 5% or small amounts of milk in the first 24 h, showed a fasting Vm of about 17-18 cm/s. Neonates older than two days who were fed with increasing amounts of milk showed a mean pre feeding Vm of 30 +/- 3.8 cm/s.
对25名健康新生儿进行了肠系膜上动脉血流速度的经皮多普勒超声测量（双功扫描），以确定正常值并研究肠道血流对喂养的反应。通过实时和M型成像测量血管直径：平均值为3.2毫米。对喂养前后血流模式的分析显示，随着峰值速度（Vp）（从57±3.1厘米/秒增至97±11.5厘米/秒）和平均速度（Vm）（从22±1.6厘米/秒增至41±4.1厘米/秒）的增加，血流有显著变化。搏动指数从空腹婴儿时的0.85降至喂养后45分钟时的0.73。Vm与出生后年龄相关，并取决于膳食的量和质量。在出生后最初24小时仅喂茶/5%葡萄糖或少量牛奶的新生儿，空腹Vm约为17 - 18厘米/秒。两天以上且喂养牛奶量增加的新生儿，喂养前Vm平均值为30±3.8厘米/秒。
