Metheny N, Eisenberg P, McSweeney M
Department of Medical-Surgical Nursing, School of Nursing, Saint Louis University, MO.
Nurs Res. 1988 May-Jun;37(3):165-9.
An experimental study was conducted on 3 consecutive 12-hour days to determine if selected physical properties of feeding tubes (material and diameter) affect tube clogging. Effectiveness of three irrigant fluids (cranberry juice, Coca-Cola, and water) in preventing tube clogging was studied. One hundred eight tubes were connected to gravity flow feeding bags containing isotonic enteral formula; 54 polyurethane and 54 silicone tubes were equally divided as to external diameters of 8 French (Fr), 10 Fr, and 12 Fr. At 4-hour intervals, flow regulators on the feeding bags were adjusted to a rate of 50 ml/hour. Fluid volumes delivered per minute were measured for each tube at 2-hour intervals. One set of tubes at each station was irrigated periodically with cranberry juice, Coca-Cola, or water. On each of the 3 days, analyses revealed significant, p less than .05, effects for tube material, cranberry juice contrasted with Coca-Cola and water as irrigants, and time. Polyurethane was consistently superior to silicone as a tube material, and cranberry juice was consistently inferior to both Coca-Cola and water as an irrigant. Tube diameter had no significant effect on the incidence of tube clogging.
进行了一项为期连续三天、每天12小时的实验研究，以确定饲管的选定物理特性（材料和直径）是否会影响饲管堵塞情况。研究了三种冲洗液（蔓越莓汁、可口可乐和水）在预防饲管堵塞方面的有效性。108根饲管连接到装有等渗肠内营养配方的重力流饲袋上；54根聚氨酯饲管和54根硅胶饲管按8法式（Fr）、10 Fr和12 Fr的外径平均分配。每隔4小时，将饲袋上的流量调节器调整到50毫升/小时的流速。每隔2小时测量每根饲管每分钟输送的液体量。每个站点的一组饲管定期用蔓越莓汁、可口可乐或水冲洗。在这三天中的每一天，分析结果都显示，饲管材料、作为冲洗液的蔓越莓汁与可口可乐及水的对比以及时间等因素都有显著影响（p值小于0.05）。作为饲管材料，聚氨酯始终优于硅胶；作为冲洗液，蔓越莓汁始终不如可口可乐和水。饲管直径对饲管堵塞发生率没有显著影响。
