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141.
本文用J.L.Reissig等人的方法对母乳中双歧因子进行了定性定量测定,并对不同时期母乳中双歧因子含量进行了比较,该法加样回收率为100.40%,RSD1.1%  相似文献   
142.
OBJECTIVE: The objective of this study was to examine the relation of physical performance measures with depressive symptoms in older men. METHOD: A cross-sectional, multivariate comparison of several measures of upper- and lower-extremity performance and their relation with depressive symptoms was performed in 2,856 older Japanese American men, aged 71-93 years, who participated in the fourth examination of the Honolulu Heart Program. Depressive symptoms were measured using an 11-item version of Center for Epidemiologic Studies Depression (CES-D) Scale. A score of at least 9 (from a maximum score of 33) is considered clinically significant. Timed functional performance tests, including walking and repeated chair stands, were used to assess lower-extremity performance; handgrip strength was used as an indicator of upper-extremity performance. RESULTS: Two hundred eighty-three participants (9.9%) had a score of 9 or greater on the 11-question CES-D Scale and were considered to be at high risk for depression. Time to walk 10 feet and time to complete five chair stands were significantly longer in those with depressive symptoms, whereas handgrip strength was significantly lower. Only the association of gait speed (time to walk 10 feet) and depressive symptoms remained significant when all physical performance measures were simultaneously included in a multivariate analysis. CONCLUSION: These results demonstrate physical performance measures, particularly gait speed, may be important potential correlates of depression in community-dwelling older men.  相似文献   
143.
李禾  张仲文 《中国骨伤》2007,20(2):136-137
患者,男性,24岁。外伤后下腹部及左下肢肿胀、疼痛、活动受限5 h入院。患者2004年4月21日7时许骑摩托车与汽车相撞,伤后有短暂意识丧失。于当地医院行X线检查示:左小腿多段开放性粉碎性骨折,左内踝骨折。给予伤口加压包扎,下肢夹板外固定,因当地医院条件有限转入我院。入院后查:体温36·4℃,脉搏100次/m in,呼吸20次/m in,血压70/40 mmHg,意识清醒,全身多处软组织挫伤及皮肤擦伤。腹部无明显隆起,有压痛,无移动性浊音。左下肢夹板外固定,左小腿中段有一长约15 cm的皮肤裂伤,肌肉、骨骼外露,左踝关节畸形,活动受限,足趾活动自如,双侧足背动…  相似文献   
144.
TNF-α、IL-6与进展期结直肠癌低白蛋白血症的相关性研究   总被引:1,自引:1,他引:0  
目的:探讨进展期结直肠癌患者血清肿瘤坏死因子(TNF-α)、白细胞介素-6(IL-6)与并发低白蛋白血症的关系. 方法:根据血清白蛋白(albumin,Alb)值将59例进展期结直肠癌患者分两组:伴低白蛋白血症(Alb≤35 g/L)组35例和白蛋白正常组(Alb>35 g/L)患者24例,并以15例健康体检者作为正常对照组,应用双抗体夹心酶联免疫吸附法(ELISA)定量测定各组血清TNF-α、IL-6水平.结果:①病例组患者血清TNF-α和IL-6水平明显高于正常对照组(P=0.001,P=0.034);②肿瘤病例中,低白蛋白血症组血清TNF-α、IL-6水平明显高于白蛋白正常组(P=0.000,P=0.002);③病例组血清Alb与TNF-α、IL-6浓度均呈显著负相关(Alb与TNF-α:r=-0.606,P=0.000;Alb与IL-6:r=-0.439,P=0.001).结论:进展期结直肠癌患者并发低白蛋白血症与血清TNF-α、IL-6浓度的升高相关.  相似文献   
145.
PURPOSE: The aim of this retrospective study was to analyze the characteristics of delayed panfacial fractures and evaluate treatment results. PATIENTS AND METHODS: Thirty-three patients with delayed panfacial fractures were treated in the Maxillofacial Trauma Center of Peking University, School and Hospital of Stomatology between 1998 and 2004. Each patient was examined by computed tomography (CT) scans before operation. For those who had no severe opening restriction, dental impressions were taken to fabricate dental casts. For those with severely comminuted fractures, 3-dimensional (3D) models of the facial skeleton were used. Re-establishing the continuity of the mandible was the first step and then used as a platform to reconstruct the maxillary fractures via maxillomandibular fixation after Le Fort I osteotomy. The third step was to restore the mid- and upper-facial width and projection by coronal approach to expose the zygomatic complex and frontal bone/sinus and/or naso-orbito-ethmoid (NOE) fractures. RESULTS: There were 3 types of mandibular fractures that affected the treatment plan: 1) type I, mandibular body/symphysis fracture(s) (17/33, 51.52%); 2) type II, mandibular angle and/or condylar fracture(s) (6/33, 18.18%); and 3) type III, both mandibular body/symphysis and angle/condylar fractures (10/33, 30.30%). Fourteen cases were associated with NOE fractures (42.42%) and 3 cases had frontal sinus fractures (9.1%). Twelve cases had enophthalmos (36.36%) and 3 lost 1 eyeball. The order of treatment was dependent on the mandibular fracture type. For type I fractures, reconstructing the mandibular arch was the first step. For type II fractures, repairing the angle, ascending rami, and condylar areas was the first step. For type III fractures, when both mandibular height and arch were disrupted, freeing the malunited angle or condyle was the first step before restoring the mandibular arch form. Reconstruction of the mandibular height and projection was then carried out. For all 3 types, the second step was to restore the mid- and upper facial width and projection by reducing the zygomatic complex and frontal bone/sinus or NOE fractures. Maxillary fixation across the Le Fort I level was the last step. Le Fort I osteotomy was used for all 33 cases. Bone grafts and soft tissue suspension also were used. Twenty-one cases (63.64%) had good results, 7 (21.21%) cases were acceptable, and 5 (15.15%) were not good. There were 7 cases (21.21%) that still had soft tissue problems that needed secondary operations. CONCLUSIONS: Reconstruction of the mandible first with Le Fort I osteotomy is a good way to treat delayed panfacial fractures. Computed tomography and 3D CT, model surgery, and occasionally 3D models are necessary aids for diagnosis and treatment. Soft tissue problems, including lacerations and asymmetries, were often the factors that caused an unfavorable outcome.  相似文献   
146.
Objectives:To assess the clinical outcomes of frozen-thawed blastocysts transfer in natural and hormonally controlled cycles.Methods:A retrospective analysis of natural and hormonally controlled cycle for 246 frozen-thawed blastocyst transfer cycles,the clinical pregnancy rate,implantation rate,early abortion rate were compared.Results:Of the 192 hormonally controlled cycles,the cancel rate,clinical pregnancy rate per ET,implantation rate and abortion rate were 7.3%(14/192),53.9%(96/178),38.8%(131/338)and 11.5%(11/96)respectively,whereas in 54 natural cycles,these rates were 16.7%(9/54),68.9%(31/45),52.9%(45/85)and 16.1%(5/31)respectively.There was no significant difference between the two groups with regard to the clinical pregnancy and abortion rate per ET,but the cancel rate and implantation rate were higher in natural cycles.However,the pregnancy and implantation rates of patients without PCOS in hormonal control cycles(57.2%,40.9%)were similar with those in natural cycles(P>0.05).Conclusion:These findings suggested that both hormonally controlled and natural cycles had similar pregnancy outcomes in frozen-thawed blastocysts transfer.  相似文献   
147.
质疑Frank—Starling心脏定律   总被引:4,自引:4,他引:0  
何川  何培芳 《西部医学》2009,21(10):1639-1646
心脏收缩释放的能量(作功)是心肌纤维长度(心室舒张末期容积,EDV)的函数,即Frank—Star一1ing(FS)心脏作功定律,被誉为心脏生理学中的“经典”理论。对此,笔者从各种不同角度进行了探讨:首先分析了Frank伸展离体心肌和Starling及其同事使用心肺制备做的实验与动物生理实际的差异,以及人们在实验中观测到的增加心肌前负荷引起收缩力增强的现象(FS现象),认为:①在正常生理条件下的动物体内,来自心脏以外的、如同心肺制备中那样人工控制心室充盈压力升高、引起EDV增加的那种血液的重力动力是不存在的。②另一方面,人为地增加前负荷,那是改变了心肌收缩时的外环境条件。③由此而激发出的FS现象,是心脏适应其外环境条件变化所作出的反应。④此种心肌收缩力增强的反应,需通过心肌细胞内部与收缩过程发生有关的心肌兴奋一收缩和化学一力学偶联等一系列生化机制(不恒定因素)方能得以实现。⑤根据他们实验中观测到的FS现象,在逻辑上不能得出前负荷这一心肌收缩时的外环境条件变化调控其作功的推论。换言之,所有的在实验中被激发出来的FS现象,都不足以成为支持FS心脏定律的证据。然后,引用国内外公认的计算心脏每搏射血作功(w)的生物物理学公式“w=P×(EDV—ESV)”,证明了w和EDV之间没有函数关系。根据心脏作功的医用物理学和生物数学的基本原理,笔者认为Frank—Starling心脏定律表达的不是心脏作功的规律。  相似文献   
148.
149.
检测幽门螺旋杆菌感染的几种方法的比较   总被引:5,自引:0,他引:5  
周颖虹  张光毅  徐川  吕和平 《医学争鸣》2003,24(17):1617-1618
目的 :评价几种诊断幽门螺杆菌 (Hp)感染的检测方法 .方法 :对 386例患者行胃镜钳取胃窦粘膜 ,分别经改良Giemsa染色、快速尿素酶 (RUT)试验、14 C 尿素呼气试验 (14 C UBT)检查及HpIgG血清学检查 ,与细菌培养结果对照 ,用 χ2检验进行对比评价 .结果 :RUT ,14 C UBT和改良Giemsa染色的敏感性、特异性较高 ,与细胞培养的符合率相近 ,其中14 C UBT和改良Giemsa染色联合检测的符合率更相近 (99.7% ) ;HpIgG血清学检查的敏感度虽和其余检测方法无差别 ,但其特异度较低 ,尤其是复诊组的特异度 ,与其他检测方法有显著差异 (P <0 .0 1) ,而且与初诊组相比也有差异 (χ2 =35 .18,P <0 .0 1) .结论 :HpIgG血清学检查可用于Hp感染的筛查 ,而不能作为疗效判断的指标 ,14 C UBT和改良Giemsa染色联合检测是较可靠的Hp检测方法  相似文献   
150.
目的 探讨对可疑受精障碍的常规体外受精(IVF)周期在授精失败后补行卵胞浆内单精子注射(reacue ICSI)的时机及临床效果.方法 对2006年1月至2007年6月在我中心接受常规IVF助孕治疗,可能有受精障碍的13例患者,取卵后6h授精,4h后观察,发现所有卵母细胞均未排出第二极体,立即行补救ICSI.结果 13个周期共154个卵母细胞,其中M Ⅱ期142个;未行补救ICSI的46个均未受精;补救ICSI的96个,受精89个,受精率92.7%,移植13个周期29个胚胎,临床妊娠1例双胎和5例单胎,种植率24.1%.结论 常规IVF受精后4h行补救ICSI可以获得较好的受精率和妊娠率.  相似文献   
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