Newell S J, Chapman S, Booth I W
Regional Neonatal Intensive Care Unit, Birmingham Maternity Hospital.
Arch Dis Child. 1993 Jul;69(1 Spec No):32-6. doi: 10.1136/adc.69.1_spec_no.32.
The study of gastric emptying in the preterm infant has been hampered by the absence of a suitable, valid technique. We have evaluated gastric antral clearance using serial ultrasonic measurement of the antral cross sectional area (ACSA). The study was easy to perform, providing successful results in 15 of 17 low birth-weight infants, with feed volumes of 8-31 ml/kg. ACSA was closely related to intragastric volume (mean (range) r = 0.96 (0.89-0.99)). Measurements were reproducible: mean (SE) coefficient of variation was 7.7% (1.1). Gastric antral clearance was observed as a fall in ACSA that began shortly after completion of the feed and returned to prefeed values at a variable rate. The pattern of gastric antral transit was entirely consistent with recognised patterns of gastric emptying and half gastric antral clearance times ranged from 20-63 minutes. Ultrasonic measurement of gastric antral clearance is a new technique allowing the study of gastric emptying in the preterm infant.
由于缺乏合适、有效的技术，对早产儿胃排空的研究受到了阻碍。我们使用连续超声测量胃窦横截面积（ACSA）来评估胃窦清除率。该研究操作简便，在17例低体重儿中，15例取得了成功结果，喂养量为8 - 31毫升/千克。ACSA与胃内体积密切相关（平均（范围）r = 0.96（0.89 - 0.99））。测量结果具有可重复性：平均（标准误）变异系数为7.7%（1.1）。观察到胃窦清除表现为ACSA下降，在喂养结束后不久开始，并以可变速率恢复到喂养前的值。胃窦转运模式与公认的胃排空模式完全一致，胃窦半清除时间为20 - 63分钟。超声测量胃窦清除率是一种可用于研究早产儿胃排空的新技术。
