Rees R G, Attrill H, Quinn D, Silk D B
Department of Gastroenterology & Nutrition, Central Middlesex Hospital, Acton Lane, London NW10 7NS, U.K.
Clin Nutr. 1986 Nov;5(4):203-7. doi: 10.1016/0261-5614(86)90026-9.
Disappointed with the overall performance of weighted and unweighted nasogastric feeding tubes, a design programme was initiated which resulted in the development of two new nasogastric tubes, one weighted and one unweighted. The tubes were manufactured with polyurethane rather than polyvinylchloride (PVC) which permitted an increase in diameter of the internal lumen which in turn was coated with water activated lubricant to ease removal of the introducer wire. A specially modelled outflow port was incorporated into the tips of both tubes. The performance of the two new polyurethane nasogastric feeding tubes was assessed under controlled trial condition using as a reference a widely used PVC unweighted open ended tube. While intubation times were similar in patients without concurrent endotracheal intubation, it took a significantly shorter time to intubate patients with concurrent endotracheal intubation with the new weighted tube. Following tube intubation, it was possible to aspirate gastric contents significantly more often through the new polyurethane tubes (p < 0.001) than through the PVC tube, and the unweighted polyurethane tube stayed in situ longer (p < 0.05) than the PVC tube. The newly designed polyurethane nasogastric feeding tubes are the first tubes that have been shown to have advantages over the simpler type of open ended, unweighted PVC nasogastric feeding tubes.
由于对加权和未加权鼻胃饲管的整体性能感到失望，启动了一个设计项目，最终开发出了两种新的鼻胃管，一种是加权的，一种是未加权的。这些管子采用聚氨酯而非聚氯乙烯（PVC）制造，这使得内部管腔直径得以增加，而管腔又涂有水溶性润滑剂，以便于拔出引导钢丝。两种管子的尖端都设有一个经过特殊造型的流出端口。在对照试验条件下，以一种广泛使用的未加权开放式PVC管作为参照，对这两种新型聚氨酯鼻胃饲管的性能进行了评估。在没有同时进行气管插管的患者中，插管时间相似，但使用新型加权管为同时进行气管插管的患者插管所需的时间明显更短。插管后，通过新型聚氨酯管吸出胃内容物的频率明显高于PVC管（p < 0.001），并且未加权聚氨酯管在原位停留的时间比PVC管更长（p < 0.05）。新设计的聚氨酯鼻胃饲管是首批被证明比更简单的开放式、未加权PVC鼻胃饲管具有优势的管子。
