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The tip here illustrated is constructed to fulfil what I believe are the theoretical mechanical requirements of an ideal tip for gastric and duodenal tubes. In practice, because of its narrow diameter combined with proper weight, it has been found superior to the tips that are in popular use. Its construction is based on the following principles of gastroduodenal intubation and drainage:
1. The diameter of the tip should be as small as possible. This is determined by the caliber of the rubber tubing. No. 8 French tubing is considered most practicable for gastroduodenal work. When such tubing is stretched over the shank of a duodenal tip to secure the latter in place, its outer diameter becomes 6 mm., which should be the diameter of the tip. The advantages of a narrow tip are obvious. It can pass into the duodenum through moderate degrees of pylorospasm more readily than a
Hollander E. A NEW TIP FOR GASTRODUODENAL TUBES. JAMA. 1923;80(17):1217–1218. doi:10.1001/jama.1923.26430440002009b
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