CRRT治疗剂量宁波推广.ppt
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1、,CRRT治疗剂量,杨向红浙江省人民医院重症医学科,CRRT 定义,CRRT是采用每天连续24小时或接近24小时的一种长时间的连续的体外血液净化治疗方法以替代受损的肾功能.,1995年美国圣地亚哥举行的第一届CRRT会议,目 录,半透膜,红细胞,白蛋白,常作为 大分子蛋白质的代表,电解质,细菌,中分子物质如b2-微球蛋白,水分子可自由通透,半透膜的功能类似于一个精细的筛子,只有分子半径小于筛孔的物质可通过它。,液体清除原理,OsmosisUltrafiltration,超 滤,溶质清除原理,弥 散,膜两侧溶质的浓度差与溶质的大小成反比小分子物质的清除,对 流,膜两侧的压力差超滤量和膜筛选系数决
2、定溶质的转移速度中分子物质的清除,溶质清除率的取决因素,筛选系数超滤量,溶质的清除与超滤量明显相关,治疗剂量,治疗剂量通常是用单位公斤体重单位时间废液量来表示,单位为 ml/kg.h或用置换液量表示,Effect of different doses in continuous veno venous hemofiltration on outcomes of acute renal failure.,Group 1 20ml/kg/hGroup 2 35ml/kg/hGroup 3 45ml/kg/h,100,90,80,70,60,50,40,30,20,10,0,Group 1(n=14
3、6),(,Uf,=20 ml/h/Kg),Group 2(n=139),(,Uf,=35 ml/h/Kg),Group 3(n=140),(,Uf,=45 ml/h/Kg),41%,57%,58%,p 0.001,p n.s.,p 0.001,CUMULATIVE SURVIVAL VS TREATMENT DOSE,100,90,80,70,60,50,40,30,20,10,0,Group 1,Group 2,Group 3,Overall,Septic patients,CRRT剂量,单纯的ARF肾脏替代治疗的剂量(42.8ml/kg/h),HVHF,超滤率42.8ml/kg/h,超滤总
4、量60L/d,什么是高容什么量血液滤过,什么是HVHF,Summary of HVHF,Blood purif 2009,28:1-11,Palevsky et al,NEJM 2008;349:7-20,Multicenter RCT1.124 patients with AKI27 ICUs in USANov.2003-July 2007Intensive therapy:IHD or SLED 6/week CVVHDF(predilution)35 ml/kghLess intensive therapy:IHD or SLED 3/week CVVHDF(predilution)2
5、0 ml/kgh,No difference in survival,NEJM 2009;361:1627-38,Multicenter RCT1.508 patients with AKI35 ICUs in AU/NZDec.2005-Nov.2008Intensive therapy:CVVHDF(postdilution)40 ml/kghLess intensive therapy:CVVHDF(postdilution)25 ml/kgh,No difference in survival,8个国家,30个ICU,OUTCOME,ATN Study,35ml/kg/h 高剂量,RE
6、NAL Study,p=0.007,%FO/BW 10%,%FO 10%,%FO 10%,p=0.007,Fraction Surviving,Effect of%FO at RRT Initiation on Survival PICARD Group,ASN 2008,DoReMi Database(N=865),Median prescribed=34 mL/kg/h,Median delivered=27 mL/kg/h,Ronco et al,2009,Dose of CRRT(mL/kg/h),Patients(%),Prospective RCT,18 ICUs in Franc
7、e,Belgium,Netherlands.140 critically ill patients with septic shock and AKI for less than 24 hPatients randomized to receive high-volume(HVHF)with 70 mL/kg/h or standard-volume CVVH(SVHF)with 35 mL/kg/h for 96 h.Trial was stopped prematurely after enrolment of 140 patients(slow patient accrual and r
8、esources no longer being available),Joanes-Boyeau,Intensive Care Med.2013;39:1535-46,Mortality at 28 days not different between groups(HVHF 37.9%vs.SVHF 40.8%,p=0.94),Nature Reviews Nephrology 2010;6:191,高容量血液滤过的弊端,营养物质的过多丢失药物代谢的影响技术要求高:血流量 滤器费用相对高,Dose of Acute Renal Replacement Therapy,We do not r
9、ecommend using Kt/V as a measure of dose of dialysis in AKI when using intermittent or extended RRT in AKI.(1A)The dose of CRRT to be delivered should be prescribed before starting each session of CRRT as mL/kg/h filtration rate,dialysis volume or a combination thereof(not graded).We suggest regular
10、 assessment of the actually delivered dose.(1B)We recommend delivering an effluent volume of 2025 mL/kg/h for post-dilution CRRT in AKI.(1A)This dose should be increased when pre-dilution is applied.We recommend to adapt the administration of medication in terms of dosing and timing,to the intensity
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