Davies R P, Linke R J, Robinson R G, Smart J A, Hargreaves C
Department of Radiology, Flinders Medical Centre, Adelaide, South Australia.
J Ultrasound Med. 1992 Nov;11(11):603-5. doi: 10.7863/jum.1992.11.11.603.
Twenty-five consecutive sonographic examinations performed at Flinders Medical Centre for possible infantile hypertrophic pyloric stenosis (IHPS) were analyzed retrospectively. The results and a pyloric muscle index calculated by a formula using length, diameter, muscle thickness, and body weight were compared with the clinical outcome (surgery or conservative management). In the children without IHPS, the calculated pyloric muscle index was less than 0.2, whereas in infants with proven pyloric stenosis, the index was greater than 0.2 (P < 0.001). This result suggested that the published index upper limit of > 0.4 to 0.46 was not valid in our institution. Pyloric length to muscle thickness ratio was also found to predict IHPS. A simplified index, including only length and muscle thickness, is proposed, whereby length (mm) plus 3.64 times thickness (mm), when greater than 25, implies IHPS.
对在弗林德斯医疗中心进行的连续25次针对可能的婴儿肥厚性幽门狭窄（IHPS）的超声检查进行了回顾性分析。将结果以及通过使用长度、直径、肌肉厚度和体重的公式计算出的幽门肌指数与临床结果（手术或保守治疗）进行比较。在无IHPS的儿童中，计算出的幽门肌指数小于0.2，而在经证实患有幽门狭窄的婴儿中，该指数大于0.2（P<0.001）。这一结果表明，已公布的指数上限>0.4至0.46在我们机构并不适用。还发现幽门长度与肌肉厚度之比可预测IHPS。提出了一个简化指数，仅包括长度和肌肉厚度，即长度（mm）加上3.64倍厚度（mm），当大于25时提示IHPS。
