肠内营养支持治疗时机选择对重症急性胰腺炎的作用

被引:20
作者
倪俊
严强
袁文斌
岑峰
张国雷
顾凤元
机构
[1] 浙江省湖州市湖州中心医院外科
关键词
重症急性胰腺炎; 营养支持治疗, 肠内; 炎症因子; 核转录因子kappa B;
D O I
暂无
中图分类号
R576 [胰腺疾病]; R459.3 [饮食疗法、临床营养学];
学科分类号
100201 [内科学]; 100231 [临床病理学];
摘要
目的探讨肠内营养支持治疗时机的选择对重症急性胰腺炎(SAP)的作用。方法采用健康清洁级长白山大白兔构建SAP模型, 将建模成功的40只SAP大白兔按随机数字表法分为两组, 每组20只。 (1)实验组:行肠外营养支持治疗, 听诊肠鸣音恢复后行肠内营养支持治疗;(2)对照组:行肠外营养支持治疗12 h后即行肠内营养支持治疗。检测建模后第1、3、7天血清TNF-α、IL-6、IL-8水平;检测肠内营养支持治疗前1 h、肠内营养支持治疗后第1、3天腹内压;于建模后第7、10天处死实验动物, 免疫组织化学染色检测胰腺组织核转录因子-κB(NF-κB)表达, 并对肠系膜淋巴结进行细菌培养。正态分布的计量资料以±s表示, 组间趋势比较采用重复测量方差分析, 两两比较采用t检验。结果成功建立40只SAP大白兔模型。 (1)血清学指标:建模后第1、3、7天, 实验组TNF-α分别为(6. 9 ±2.1) ng/ L、(5. 9 ±1. 8) ng/ L、 (5. 3 ±1.8)ng/ L;IL-6分别为(109 ±17) ng/ L、(96 ±16) ng/ L、(83 ±17)ng/ L;IL-8分别为(89 ±20)ng/ L、 (78 ±21)ng/ L、(70 ±19)ng/ L。对照组TNF-α分别为(7. 4 ±1. 5) ng/ L、(7.1 ±1. 6) ng/ L、(6. 8 ±1. 7) ng/ L; IL-6分别为(101 ±19) ng/ L、(98 ± 18)ng/ L、(93 ± 20)ng/ L;IL-8分别为(91 ± 14) ng/ L、(91 ± 16)ng/ L、 (83 ±19) ng/ L。两组TNF-α、IL-6的变化趋势比较, 差异均有统计学意义(F=7.947, 19.386, P<0.05), IL-8差异则无统计学意义(F=2.756, P>0.05)。 (2)腹内压:肠内营养支持治疗前、肠内营养支持治疗后第1、3天实验组腹内压分别为(3.5 ± 1. 6) cmH2O (1 cmH2O= 0.098 kPa)、(4.3 ± 1.7)cmH2O、(3.6 ± 1. 8) cmH2O;对照组腹内压分别为(4. 9 ±1. 9)cmH2O、(5. 7 ± 2.2)cmH2O、(4.5 ± 1.6)cmH2O, 两组比较, 差异有统计学意义(F=7.042, P<0.05)。 (3)胰腺组织NF-κB:细胞质及细胞核中均有NF-κB表达, 以细胞核表达为主, 实验组第7天的NF-κB表达强度为5. 0 ±2. 7, 低于对照组的7. 0 ±2. 9, 两组比较, 差异有统计学意义(t=2.236, P<0.05)。 (4)肠系膜淋巴结细菌培养:建模后第7、10天实验组分别为(4.7 ± 0. 9)×103 cfu/ g、(4.1 ±0. 7)×103 cfu/ g, 对照组分别为(5. 5 ±1. 0)×103 cfu/ g、(4. 6 ±0. 7)×103 cfu/ g, 两组比较, 差异均有统计学意义(t=2.382, 2.126, P<0.05)。结论肠内营养支持治疗时机的选择对SAP的恢复具有重要意义, 而肠功能恢复后行肠内营养支持治疗可能更优于直接行肠内营养支持治疗。
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