神经移植端侧缝合颈5/7神经根与上干桥接治疗产瘫

目的：探讨一种不影响残存神经自行恢复的产瘫臂丛神经修复新方法。方法：将上干损伤部位行松解,不切除神经瘤,将其近端的颈5或颈7神经根和神经瘤远端的臂丛上干的神经束膜切开窗口,取颈丛皮支或前臂外侧皮神经前成多段（一般每段长约2．0－2．5cm）,两端分别与颈5神经根和上干的神经束膜行端侧缝合,结果：8例患儿经术后1－11年（平均3年）的随访,4例的三角肌和肱二头肌骨力达4级和4^-级,4例达3例。3例后期进行了肩关节松解和旋前圆肌肌腱切断,结论：该方法既提供了可使损伤近端颈5神经根的新生纤维生长至上干的神经通道,又未阻断神经瘤内残存神经纤维的自行恢复,是治疗产瘫特别是Tassin2型的新术式。     

热化疗对人体结肠癌LoVo细胞中一氧化氮含量的影响

Aim To study the effect of nitric oxide (NO) on LoVo cells after hyperthermia combined with MMC and their mechanisms. Methods The levels of NO were determined in cell culture medium of LoVo cells by Cu-Cd reduction method.Results The levels of NO in control (45.9±16.12) μmol/L group were lower than those in chemohyperthermy(92.3±24.30) μmol/L and hyperthermia (67.67±15.48)μmol/L group (P＜0.01,P＜0.05 respectively). Levels of NO in chemohyperthermy and hyperthermia groups were higher than those in chemotherapy(47.03±16.32)μmol/L(P＜0.01,P＜0.05 respcevtively). The levels of NO in chemo-hyperthermy group were higher than those in hyperthermia group(P＜0.05), and those in chemotherapy group higher than in control group but without statistical significance.Conclusion Chemohyperthermy and hyperthermia could remarkably enhance the levels of NO produced by LoVo cells. NO levels could also be enhanced by chemotherapy. It could be concluded that Nitric Oxide Synthase (NOS) in tumor cells might be activated by hyperthermia, chemohyperthermy and chemotherapy, and increased NO level which induced cytotoxic reaction. This may be one of the mechanisms of treatment with chemohyperthermy.     

聚羟基丁酯酯缓释微球的制备及性能

用溶剂蒸发法制备了以新型生物可降解材料聚羟基丁酸酯为载体、以安定为模药的缓释微球,讨论了药物与载体之比对药物含量与包封率的影响,以及制备微球条件对药物释放性能的影响;微球平均粒径为３０～４０μｍ,粒径分布在１～１．５之间,最大载药量为１９．５１％;最高包封率为６７．１１％;体外累积释放曲线呈“两相”释放特征并拌随初始的“突释效应”。扫描电镜观察微球表面呈皱缩表观形态结构,微球内部横断面具有孔道与孔     

肾功能分级在成人心脏术后肾功能衰竭的应用

Objective To evaluate the ability of the RIFLE classification to predict hospital mortality in adult patients who underwent cardiac surgery. Methods From October Ist 2006 to December 31st 2006, five hundred and nine adult patients who underwent coronary artery bypass grafting and/or valve operation were enrolled in this study. Renal function was assessed daily according to the RIFLE classification, meanwhile, APACHE Ⅱ score and SOFA score were also evaluated, as well as the maximum scores were recorded. Results Mean duration of ventilation support was 18(14 - 19) hours, the time of ICU stay was 1.4 ± 1.0 days, and the time of postoperative hospital stay was 12. 0(10.0- 15.0) days. 167 patients (32. 8%) incurred postoperative ARF according to the RIFLE classification. The overall mortality was 4. 3% (22/502). A significant increase (P < 0. 01) was observed for mortality based on RIFLE classification. By applying the area under the receiver operating characteristic curve, the RIFLE classification had more powerful discrimination power [0. 933, (95% CI 0. 872 -0. 995) ,P <0. 001]. Conclusions ARF is one of the major complications in postcardiotomy patients. Analytical data suggested the good discriminative power of the RIFLE classification for predicting inpatient mortality of adult postoperative patient with ARF, and the RIFLE classification is simple and practically performed. According to the RIFLE classification, patients with RIFLE class I or class F incur a significantly increased risk of in-hospital mortality compared with those who never develop ARF.     

冠心病患者冠状动脉内成形及支架术前后QT离散度的变化

目的 体表心电图ＱＴ离散度（ＱＴｄ）增大在冠心病患者是预测室性心律失常事件的有用指标。旨在估价冠心病患者经皮冠状动脉腔内成形主支架术（ＰＴＣＡ＋ｓｔｅｎｔ）前后对ＱＴ离散度的影响。方法 对６０例冠心病患者行ＰＴＣＡ＋ｓｔｅｎｔ术前后ＱＴ离散度进行分析。男性４６例,女性１４例,平均年龄５７岁,患者为单支血管病变３６例,多支血管病２４例。本组对ＰＴＣＡ＋ｓｔｅｎｔ术前后同步３导联的标准１２导联心电图Ｑ     

心脏停搏液pH值对大鼠未成熟心肌的影响

目的　探讨心脏停搏液 p H值对离体未成熟大鼠心肌的影响 .方法　采用 SD幼鼠 (18～ 2 1d)离体工作心模型 ,14℃低温缺血 12 0 min,缺血前分别以 p H为 6 .40 ,7.0 0 ,7.2 5 ,7.40 ,7.80和 8.2 0的 St.Thomas' 液单次灌注 ,观察记录缺血前后心功能的变化及心肌 CPK漏出量 .结果　1缺血再灌注 30 m in后主动脉流量恢复百分比依次为 (6 2±5 ) % ,(72± 4) % ,(83± 4) % ,(78± 3) % ,(70± 3) %和 (5 8±4) % ,以 p H 7.2 5组保护效果最好 .2心肌 CPK漏出量各组间无显著差异 .结论　 p H值为 7.2 5的弱酸性心脏停搏液对大鼠未成熟心肌可提供良好的保护作用 ,同时大鼠未成熟心肌可耐受较大范围的 p H变化 .     

七氟醚和异氟醚心血管效应的比较

目的　比较不同浓度七氟醚和异氟醚的心血管效应 .方法　 2 0只健康杂种犬随机分为七氟醚组和异氟醚组 .监测有创动脉压 ;经大静脉置入漂浮导管测定肺动脉楔压、中心静脉压、心输出量 .吸入麻醉药 (七氟醚或异氟醚 ) ,维持其呼气末浓度在 14.5 m L· L- 1 或 8.5 m L· L- 1 ,10 min后测定上述参数值 .结果　七氟醚和异氟醚 :1对心率均没有显著影响 ;2均可呈剂量依赖性地降低体循环血压和血管阻力 ,对心功能也有剂量依赖性的抑制作用 ,两药之间的差异没有显著性 ;3七氟醚降低肺动脉压的作用强于异氟醚 ,但与浓度大小无明显关系 .结论　七氟醚和异氟醚具有相似的心血管效应 ,除七氟醚降低肺动脉压的作用强于异氟醚外 ,二药对心血管系统功能均有剂量依赖性的抑制作用 .     

综合4步法治疗肩周炎208例报告

采用局部注射 ,针刀松解 ,手法剥离 ,中药调理 4步法有机结合治疗肩周炎 2 0 8例 ,结果治愈 187例 ,显效 13例 ,优良率 96.3 %。认为针对局部病变及肩部整体功能调理 ,是获得较好疗效的关键。     

恶性纤维组织细胞瘤的免疫组织化学研究

本文对23例恶性纤维组织细胞瘤((MFH)及19例其他软组织肿瘤的免疫组化研究表明,AACT,AAT阳性率最高,是肿瘤性组织细胞的良好标志物,对MFH有一定诊断价值。Lys不是恶性组织细胞的良好标志物。Des的表达提示部分肿瘤细胞向肌纤维母细胞分化,Vim的表达则提示向纤维母细胞分化。所以,我们的研究结果表明MFH可能来自未分化间叶细胞,并在不同情况下向组织细胞、纤维母细胞和肌纤维母细胞等不同方向分化,而表现出复杂的组织学形态。     

不同类型苷类在大孔吸附树脂上的吸附纯化特性研究

目的 :研究黄芩苷等 3种具有不同类型母核的苷类中药成分在大孔吸附树脂上的吸附纯化特性。方法 :以黄芩、栀子和白芍为样本考察它们在D101等 6种不同树脂上的吸附纯化特性。结果 :6种非极性树脂对 3种苷类总体静态吸附能力为黄芩苷 >芍药苷 >栀子苷 ,其洗脱溶剂分别为 75% ,25% ,45%的乙醇 ,洗脱率分别为60% ,93% ,93%。结论 :具有相似母核结构的苷类分子在同一树脂上吸附能力不一定相似 ,但吸附力的大小与分子结构有关 ,对苯乙烯型树脂而言 ,被吸附的分子母核双键数目越多 ,分子与树脂吸附作用力越大。