对于有限的饮食摄入量而言,正常的胃空化扫描值是正常的
Henry P Parkman1,2, Reena Anand3, Alexandra C Barrett3
1Section of Gastroenterology, Temple University Department of Medicine, Philadelphia, PA, USA. henry.parkman@temple.edu.
胃排空扫描 (GES) 的结果因食量而异. 较小的食物显示出更快的排空和更低的保留,影响胃衰竭的诊断. 调整解释减少饮食摄入量对于准确的患者评估至关重要.
科学领域:
- 胃肠病学 胃肠病学
- 核医学就是核医学.
- 诊断成像 诊断成像 诊断成像
背景情况:
- 胃排空扫描 (GES) 是用于胃衰竭诊断的标准.
- 由于症状,患者可能无法完成全餐,这会影响测试准确度.
- 这项研究调查了摄入的饭菜大小对正常受试者的GES结果的影响.
研究的目的:
- 量化不同摄入大小餐对健康个体胃空化的影响.
- 确定食大小的变化如何影响胃空化扫描仪 (GES) 的解释.
- 根据减少饮食摄入量,提供延迟胃空化的参考值.
主要方法:
- 24名健康受试者使用Tc-99m放射性标记的蛋白三明治进行了三次GES测试.
- 试验对象摄入了标准餐的全部 (100%),一半 (50%) 或四分之一 (25%).
- 胃保持和半排空时间 (T1/2) 在不同的时间点计算.
主要成果:
- 与全餐相比,在50%和25%的食中,在0.5,1,2和3小时内显著降低胃缩率.
- 2小时后的平均+2SD胃保留率为50%餐的41.6%,为25%餐的59.5%.
- 与全餐 (94分钟) 相比,半餐 (67分钟) 和四分之一餐 (69分钟) 的半空时间 (T1/2) 显著缩短.
结论:
- 摄入的食物量显著影响胃空气测量.
- 减少餐食大小导致更短的T1/2和更低的食后保留时间.
- 对于摄入50%标准餐的患者来说,在2小时或T1/2>105.2分钟时>41.6%的保留表明胃空气的延迟.
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