Ricci R, Bontempo I, Corazziari E, La Bella A, Torsoli A
Cattedra di Gastroenterologia I, Università La Sapienza, Roma, Italy.
Gut. 1993 Feb;34(2):173-6. doi: 10.1136/gut.34.2.173.
This study aimed to evaluate whether serial ultrasound measurements of antral volumes are reproducible and, if so, whether they are representative of the entire gastric contents and reliably measure gastric emptying. The antral volume was measured in man after oral and intragastric administration of known amounts of 5% glucose solutions, and on two separate occasions in the same subjects, after the ingestion of a standardised solid-liquid meal (1050 kcal). Antral volume measurements were performed in both supine and upright positions; inter- and intraobserver measurement errors were also assessed. After ingestion or intragastric administration of equal amounts of liquid, antral volumes determined by ultrasound showed a wide intersubject variability. In each individual subject, however, a linear trend was found between the antral volume and amount of ingested or administered liquid. Intrasubject variability of antral volume measurements was at its minimum in fasting conditions and 300 minutes after ingestion of the solid-liquid meal. Intra- and interobserver variations and whether the patient was erect or supine did not affect measurements of antral volumes. These results support the use of real time ultrasound in determining the gastric emptying time. Results at fasting and 300 minutes after a solid-liquid meal are stable end points of measurement.
本研究旨在评估对胃窦容积进行系列超声测量是否具有可重复性，若具有可重复性，这些测量是否能代表整个胃内容物，并可靠地测量胃排空。在人体口服和胃内给予已知量的5%葡萄糖溶液后，以及在同一受试者摄入标准化固液混合餐（1050千卡）后的两个不同时间，测量胃窦容积。胃窦容积测量在仰卧位和直立位均进行；同时评估观察者间和观察者内的测量误差。在摄入或胃内给予等量液体后，超声测定的胃窦容积在受试者间显示出很大的变异性。然而，在每个个体受试者中，胃窦容积与摄入或给予的液体量之间发现了线性趋势。胃窦容积测量的受试者内变异性在禁食状态下以及摄入固液混合餐后300分钟时最小。观察者内和观察者间的差异以及患者是直立还是仰卧并不影响胃窦容积的测量。这些结果支持使用实时超声来确定胃排空时间。禁食时和摄入固液混合餐后300分钟时的结果是稳定的测量终点。
