糖皮质激素在脓毒症中的应用课件

1、糖皮质激素在脓毒症中的应用浙江省中医院ICU 雷澍体内的作用对应激诱发的反应的反馈系统的活化，保证人体在防御机制方面不反应过度 应用的现状 2003年6月，SSC制定了新的脓毒症治疗指南： 推荐对脓毒性休克静脉使用小剂量氢化可的松 50mg，q6h，连续7天(C级)；可以同时每日给 予氟氢可的松 50ug ，鼻饲(E级)；避免氢化可 的松300mg/d(A级).相对肾上腺皮质功能不全周围抵抗脓毒症GC相对不足炎症反应过度循环衰竭病情加重外源性GC 相对肾上腺皮质功能不全的发生机制-及促皮质素抑素抑制肾上腺功能并降低皮质醇水平机体水平偏低活化的淋巴细胞产生片段干扰经典的功能 肾上腺皮质血液灌注不

2、足 周围抵抗的发生机制皮质醇向炎症部位转运障碍糖皮质激素受体 ()数目减少和亲和力下降炎症部位皮质醇浓度调节异常 如何确定存在相对肾上腺功能不全以兴奋试验后皮质醇的升幅被削峰为特征临床症状和体征是决定诊断的关键因素快速刺激实验时，皮质醇增加幅度9/若任意时间血皮质醇水平低于 552nmol/L（19.3ug/dl)相对肾上腺功能不全试验后血皮质醇低于 690nmol/L （24.2ug/dl) 相对肾上腺功能不全和周围抵抗的发生率相对肾上腺功能不全:基于的不同定义 ,脓毒症及感染性休克时 ,其发生率为 6.25% 75%周围抵抗: ? 相对肾上腺功能不全一项 由Annane 等完成的189例脓

3、毒性休克患者的队列研究证实,相对肾上腺皮质功能不全的最佳定义为 :快速刺激实验时 ,皮质醇增加幅度 9/。应用此概念 ,严重脓毒症时相对肾上腺皮质功能不全发生率约 50% ,28的死亡率约75% 。 区分相对肾上腺功能不全和肾上腺功能不全ACTH testpost-corticotropin plasma cortisol levels 18 g/dL2.an increase in plasma cortisol level 18 g/dL (excluding adrenal insufficiency) hydrocortisone (100 mg i.v. three times da

4、ily for 5 days) , a significant improvement in hemodynamics and a beneficial effect on survival. These beneficial effects do not appear related to adrenocortical insufficiency Crit Care Med. 1999, Briegel J, Prospective, randomized, double-blind, single-center study, Forty patients with septic shock

5、, Hydrocortisone was started with a loading dose of 100 mg given within 30 mins and followed by a continuous infusion of 0.18 mg/ kg/hr. When septic shock had been reversed, the dose of hydrocortisone was reduced to 0.08 mg/kg/hr. This dose was kept constant for 6 days, reduced the time to cessation

6、 of vasopressor therapy in human septic shock. This was associated with a trend to earlier resolution of sepsis-induced organ dysfunctions. Overall shock reversal and mortality were not significantly different between the groupsJAMA.2002, Djillali Annane, Placebo-controlled, randomized, double-blind

7、, parallel-group trial performed in 19 intensive care units in France. Three hundred adult patients with septic shock, (50-mg intravenous bolus every 6 hours) and fludrocortisone (50-g tablet once daily) for 7 days, significantly reduced the risk of death in patients with septic shock and relative adrenal insufficiency, There was no significant difference between groups in responders 所有的脓毒性休克患者需要激素吗patients who responded normally t