Department of Pediatric Gastroenterology, Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.
Pediatr Radiol. 2012 Dec;42(12):1465-70. doi: 10.1007/s00247-012-2484-1. Epub 2012 Sep 7.
Blood flow volume in the superior mesenteric artery (SMA) measured by pulsed Doppler has been used in adults to evaluate Crohn disease but has not been utilized in children and adolescents.
To establish a cutoff point for normal SMA blood flow using pulsed Doppler US measurement in healthy children and adolescents.
The study included healthy volunteers from an urban community, divided into two age groups, children (5-9 years) and adolescents (10-17 years). Anthropometric measurements included waist circumference and body surface area classified according to the z-score of body mass index. Heart rate, blood pressure, oxygen saturation and temperature were measured immediately before US evaluation.
The average age of the 60 participants was 12.2 years. Of these, 21 (35%) were ages 5-9 years and 39 (65%) were ages 10-17 years; 21 (35%) were boys. Findings of the two examiners coincided for 58 of the 60 (96.7%) participants. SMA blood flow was significantly lower in the children (mean ± SD = 556 ± 122 ml/min) than in adolescents (mean ± SD 775 ± 311 ml/min) (P < 0.001). SMA blood flow showed statistically significant positive associations with body surface area.
We found that superior mesenteric artery blood flow is significantly lower in children than in adolescents and is associated with body surface area.
脉冲多普勒测量的肠系膜上动脉（SMA）血流量已在成人中用于评估克罗恩病，但尚未在儿童和青少年中使用。
使用脉冲多普勒超声测量建立健康儿童和青少年正常 SMA 血流量的截止值。
本研究纳入了来自城市社区的健康志愿者，分为两组，儿童（5-9 岁）和青少年（10-17 岁）。人体测量学测量包括腰围和根据体重指数 z 分数分类的体表面积。在进行超声评估之前，立即测量心率、血压、血氧饱和度和体温。
60 名参与者的平均年龄为 12.2 岁。其中，21 名（35%）年龄为 5-9 岁，39 名（65%）年龄为 10-17 岁；21 名（35%）为男性。60 名参与者中的 58 名（96.7%）两名检查者的检查结果一致。儿童的 SMA 血流量（平均±SD=556±122ml/min）明显低于青少年（平均±SD=775±311ml/min）（P<0.001）。SMA 血流量与体表面积呈显著正相关。
我们发现肠系膜上动脉血流量在儿童中明显低于青少年，并且与体表面积相关。
