Moss G, Friedman R C
Am J Surg. 1977 Feb;133(2):225-8. doi: 10.1016/0002-9610(77)90086-1.
Gastric aspiration alone utilizing either a Levin-type nasogastric tube or a gastrostomy tube is inefficient. The esophagus proved to be a more efficient supplemental site for aspiration of a swallowed bolus. For thirty-one patients, esophagogastric aspiration proved to be approximately twelve times as efficient as aspiration via a Levin-type tube for twenty-four patients or a gastrostomy tube in five patients (residual activity, of 3,35, and 42 per cent, respectively). Radiographic studies of a volunteer swallowing barium with each type of nasogastric tube in place showed efficient removal of the contrast agent by esophageal aspiration. With the Levin-type tube, the bolus promptly traversed the stomach and entered the duodenum along parallel channels remote from the x-ray -visualized gastric tube. Efficient postoperative exclusion of swallowed air clinically and experimentally by esophageal aspiration permits more rapid return of gastrointestinal function and full nutrition and perhaps shortened hospitalization.
单独使用莱文式鼻胃管或胃造瘘管进行胃抽吸效率不高。事实证明，食管是吞咽团块抽吸更有效的补充部位。对于31名患者，食管胃抽吸的效率约为24名患者通过莱文式管抽吸或5名患者通过胃造瘘管抽吸的12倍（残留活性分别为3%、35%和42%）。对一名志愿者在插入每种类型鼻胃管的情况下吞咽钡剂进行的放射学研究表明，通过食管抽吸可有效清除造影剂。使用莱文式管时，食团迅速穿过胃部，沿着远离X线显影胃管的平行通道进入十二指肠。通过食管抽吸在临床和实验上有效排除术后吞咽的空气，可使胃肠功能更快恢复并实现充分营养，或许还能缩短住院时间。
