可视吸痰系统的离体实验

摘要

目的 探讨采用可视吸痰系统进行离体肺、气管内吸痰的可行性及有效性.方法 在离体猪肺、气管的不同部位注入浓度为1.5%、3.0%的模拟痰液,吸痰的进入通道分别为咽喉插入吸痰、气管插管吸痰及气管切开吸痰,根据吸痰方式,将实验猪分为传统吸痰组(采用传统吸痰系统进行标准吸痰操作,n=40)及可视吸痰组(采用可视吸痰系统进行标准吸痰操作,n=40),吸痰时间为15 s,设定吸痰负压为-200 mm Hg.对两组的吸痰量进行比较.结果 用1.5%浓度的模拟痰液进行试验,可视吸痰组采用咽喉插入吸痰、气管插管吸痰及气管切开吸痰的吸痰量分别为(6.91±0.49)、(7.27±0.71)及(6.59±0.88)g,传统吸痰组的吸痰量分别为(5.28±0.64)、(6.39±0.91)及(5.98±1.38)g;用3.0%模拟痰液进行试验,可视吸痰组采用咽喉插入吸痰、气管插管吸痰及气管切开吸痰的吸痰量分别为(6.37±1.15)、(7.98±0.97)及(7.35±1.79)g,传统吸痰组的吸痰量分别为(5.64±1.29)、(6.19±1.05)及(6.90±1.25)g;可视吸痰组与传统吸痰组的吸痰量比较,差异均有统计学意义(P<0.05).结论 可视吸痰系统的吸痰效率比传统吸痰系统高,且更易操作,具有临床可行性.%Objective To explore the feasibility and effectiveness of visual sputum suction used in sputum suction in lung and trachea in vitro. Methods Concentration of 1. 5% and 3. 0% of simulated sputum were injected into different parts of pig lung and trachea in vilro. The pathways of sputum suction were through throat insertion,trachea cannula and tracheotomy,respectively. The experimental pigs were divided into conventional sputum suction group(conventional sputum suction system used to conduct standard suction,n = 40) and visual sputum suction group(visual sputum suction system used to conduct standard suction,n = 40). Duration of suction was 15 secends,and the suction negative pressure was set to be -200 mm Hg. The suction capacities of the two groups were compared. Results Experiment with 1. 5% simulated sputum,the suction capacities of methods of throat insertion,trachea cannula and tracheotomy in visual sputum suction group were (6. 91 ± 0. 49) , (7. 27 ± 0. 71) and (6. 59 ± 0. 88)g, while those in conventional sputum suction group were (5. 28 ± 0. 64), (6. 39 ± 0. 91) and (5. 98 ± 1. 38)g. Experiment with 3. 0% simulated sputum,the suction capacities of methods of throat insertion,trachea cannula and tracheotomy in visual sputum suction group were (6. 37±1. 15) ,(7. 98 ± 0. 97) and (7. 35 ± 1. 79)g, while those in conventional sputum suction group were (5. 64 ± 1. 29) , (6. 19 ± 1. 05) and (6. 90±1. 25)g. Compared the sputum capacities between visual sputum suction group and conventional sputum suction group,the differences were all statistically significant(P<0. 05). Conclusion Sputum suction efficiency of visual sputum suction system is higher than that of conventional sputum suction system, with easier operation and clinical feasibility.