Correspondence between lung function and symptom measures from the Cystic Fibrosis Respiratory Symptom Diary–Chronic Respiratory Infection Symptom Score (CFRSD-CRISS)

BackgroundPulmonary exacerbations (PEx) in cystic fibrosis (CF) patients reduce quality of life. Lung function, measured by the percent predicted forced expiratory volume in 1 s (ppFEV1), is widely used to evaluate PEx treatments. We analyzed the correspondence of ppFEV1 with 8 patient-reported symptom-based questions from the Cystic Fibrosis Respiratory Symptom Diary–Chronic Respiratory Infection Symptom Score (CFRSD-CRISS).MethodsData were derived from the observational Standardized Treatment of Pulmonary Exacerbations (STOP) study. CF patients who had CFRSD-CRISS and ppFEV1 measurements on ≥2 timepoints were included: 1) day of initial PEx, 2) 7 days later, and/or 3) end of PEx. We calculated age-stratified Spearman correlation coefficients and 95% confidence intervals (95% CIs) between the change in ppFEV1 and change in CFRSD-CRISS items from index to day 7 and from index to the end of PEx treatment.ResultsLung function and symptom scores improved by the end of treatment; however, correlations between ppFEV1 and the specific CFRSD-CRISS measures were mostly weak to moderate. An exception was that among patients <18, we observed moderately strong correlations between changes in ppFEV1 and cough severity (r = ?0.58 (95% CI: ?0.80, ?0.21)), mucus quantity (r = ?0.51 (?0.77, ?0.11)), and wheezing (r = ?0.53 (?0.78, ?0.14)) from index until end of treatment.ConclusionsAs novel treatments are developed for PEx, it is important to ensure that improvement is measured meaningfully. The generally weak associations between patient-reported symptoms and ppFEV1 that we found suggest that these measures capture different aspects of the disease and both metrics are important when evaluating new treatments.     

供体猪心在UW液中的保存时间和温度对其组织结构的影响

目的:探究体外保存时间和UW液温度对供体猪心组织结构的影响.方法:按照临床上现行的供体心脏标准获取流程获取18头中华小型猪的心脏,分别用21℃、4℃和-4℃的UW液在体外保存供体猪心;每一温度下,分别保存供体猪心3 h、6 h和9 h(每种保存条件下保存2个猪心).然后对体外保存后的猪心进行组织取材,通过苏木素-伊红(...     

HTK液和UW液心肌保存效果的实验研究

目的：在离体鼠心Langendorff灌注模型上,检验并比较HTK液和UW液在低温（0－4℃）心肌保存中的心肌保护作用。方法：实验分为2组,HTK组和UW组,每组8只Wistar大白鼠。快速取下鼠心并悬挂在Langendorff灌注模上灌注和测定血流动力基础值。灌注并低温保存离体鼠心4h.4h后重新复温复灌,再次测定血流动力学值,留取标本测恢复率HTK组优于UW组。心肌水含量两组差异无显著意义,灌注脉出液出肌酶漏出量HTK组明显低于UW组,心肌中ATP和CP含量HTK组高于UW组,心肌细胞超微结构变化HTK组轻于UW组,结率：HTK液和UW液阳比较合适的心肌保护液,对心肌的保存效果HTK液优于UW液。     

UW与HTK保存液在肝脏移植术中临床效果对比的系统评价和meta分析

目的比较肝脏移植术中两种常用的器官保存液(UW液与HTK液)的临床效果。方法全面检索PubMed、Embase、Cochrane Library、中国期刊全文数据库、中国生物医学文献数据库、万方、维普等中英文数据库,纳入对比UW(UW液组)与HTK(HTK液组)两种保存液对移植肝脏保存效果的研究,提取资料并评价后用RevMan 5.3软件进行分析。结果最终纳入16篇文献共35 024例受者,meta分析结果显示,与UW液组比较,HTK液组的术后胆管并发症发生率[RR=1.30,95%CI(1.07,1.58),P=0.008]和术后7 d内天门冬氨酸氨基转移酶峰值[MD=112.45,95%CI(93.34,131.56),P<0.01]均较低,而术后移植肝原发性无功能发生率[RR=1.07,95%CI(0.52,2.18),P=0.86]、术后不同时间点移植肝和受者存活率(P>0.05)、术后再移植率[RR=0.83,95%CI(0.48,1.45),P=0.51]、急性排斥反应发生率[RR=1.27,95%CI(0.96,1.68),P=0.33]、7 d内丙氨酸氨基转移酶峰值[MD=31.79,95%CI(–161.84,225.42),P=0.75]、总胆红素水平[MD=19.42,95%CI(–10.83,49.67),P=0.21]、凝血酶原时间[MD=1.75,95%CI(0.01,3.49),P=0.838]等指标比较差异均无统计学意义。结论 HTK保存液对移植肝的保存安全且有效,具有与UW保存液相似的效果,关于二者对肝移植术后受者和移植肝远期存活率的影响仍需要大样本、高质量的随机对照试验研究来系统评价。     

Rat liver preservation: II. Combining UW solution with Eurocollins solution or Ringer's lactate abrogates its protective effect

Abstract. The mechanisms by which cold preservation solutions exert their protective effects are only partially understood. The consequences of mixing different solutions, with presumably different modes of action, may be additive and beneficial or may be deleterious. It is commonplace in clinical liver preservation to use Ringer's lactate (RL), Eurocollins (EC), and University of Wisconsin (UW) solution in sequence for washout of blood, precooling, and cold storage of the organ. In this study, 114 Sprague Dawley rats received orthotopic liver transplants that were flushed in various sequences with RL, EC, and UW solutions. One-week animal survival served as the criterion of preservation success. The results demonstrated that liver preservation with UW solution alone is significantly superior ( P < 0. 01) to any combination of RL, EC, and UW solutions and may explain some of the instances of primary nonfunction in clinical liver transplantation.     

HX液保存大鼠肝脏有效时间的探讨

采用大鼠肝脏非循环离体灌注模型比较ＨＸ液和ＵＷ液保存鼠肝效果。取６６只封闭群ｗｉｓｔａｒ大鼠肝脏，随机采用ＨＸ液或ＵＷ液保存１２、１８、２４和３０小时，测定肝组织含水量、肝窦内皮细胞死亡率、Ｋｒｅｂｓ－ｈｅｎｓｅｌｅｉｔ液天门冬氨酸转氨酶活性、分泌胆汁的肝脏数量及肝脏组织形态学变化。结果提示：保存时间２４小时内ＨＸ液保存鼠肝效果与ＵＷ液类似。     

Celsior液、HTK液和UW液对心脏保存效果的实验研究

目的应用Langendorff灌注模型低温灌注离体鼠心6h,检验器官保存液Celsior液、HTK液和UW液对心脏保存的效果.方法实验分为3组,每组8只Wistar大白鼠.麻醉并抗凝后,快速取下鼠心并悬挂在Langendorff灌注模型上灌注,测定血流动力学基础值.分别用三种器官保存液灌注离体鼠心,在4℃下低温浸泡保存6h.重新复温、复灌,再次测定血流动力学值和冠状动脉流量,留取标本分别测定心肌水含量、心肌酶漏出量、心肌细胞ATP和CP含量和观察心肌细胞超微结构变化.结果①血流动力学恢复率,Celsior液和HTK液组均优于UW液组.②心肌酶漏出量,Celsior液和HTK液组明显低于UW液组.③ATP和CP含量,Celsior液和HTK液组高于UW液组.④超微结构变化,Celsior液组和HTK液组心肌损害最轻,UW液组心肌损害较重.结论Celsior液、HTK液和UW液对心脏保护的效果均较好,均为较合适的心肌保存液.Celsior液和HTK液对心脏保存的效果无显著差异,但均优于UW液.