Roll C, Hanssler L
Klinik und Poliklinik für Kinder- und Jugendmedizin, Universitätsklinikum, Essen, Germany.
Acta Paediatr. 1998 Sep;87(9):955-9. doi: 10.1080/080352598750031617.
Umbilical arterial catheters in the high position reduce the lumen of the aorta and may thereby impair blood supply to the intestine. Thirty-two preterm and three term infants were studied with an umbilical arterial catheter by colour and duplex Doppler sonography. The diameter of the aorta at the level of the coeliac axis was measured to calculate the reduction of the cross-sectional area of the aorta by the catheter. Blood-flow velocities were measured in the coeliac axis, the superior mesenteric artery and the anterior cerebral artery before and after removal of the catheter. The umbilical arterial catheter reduced the cross-sectional area of the aorta by 3.4-27.2% (mean 10.1%). There was no difference between blood-flow velocities in the coeliac axis and the superior mesenteric artery before and after removal of the umbilical arterial catheter, indicating that the catheter did not impair blood supply to the intestine.
高位脐动脉导管会减小主动脉管腔，从而可能损害肠道血液供应。通过彩色和双功多普勒超声对32例早产儿和3例足月儿进行了脐动脉导管研究。测量腹腔干水平主动脉的直径，以计算导管导致的主动脉横截面积减小情况。在拔除导管前后，测量腹腔干、肠系膜上动脉和大脑前动脉的血流速度。脐动脉导管使主动脉横截面积减小了3.4%-27.2%（平均10.1%）。拔除脐动脉导管前后，腹腔干和肠系膜上动脉的血流速度没有差异，表明该导管未损害肠道血液供应。
