Translumbar catheter redirection using a tip-deflector technique

A new technique is described for reversing the direction of the catheter tip during translumbar aortography, without the need for partial withdrawal of the catheter from the aortic lumen. The method ensures optimal delivery of contrast medium at the desired level, while avoiding the risk of retroperitoneal bleeding or dislodgement during catheter manipulation.     

Sellar chordoma presenting as pseudo-macroprolactinoma with unilateral third cranial nerve palsy

We described a 61‐year‐old female with a sellar chordoma, which presented as pseudo‐macroprolactinoma with unilateral third cranial nerve palsy. Physical examination revealed that her right upper lid could not be raised by itself, right eyeball movement limited to the abduction direction, right pupil dilated to 4.5 mm with negative reaction to light, and hemianopsia in bitemporal sides. CT scanning showed a hyperdense lesion at sellar region without bone destruction. Magnetic resonance imaging (MRI) revealed the tumor was 2.3 cm×1.8 cm×2.6 cm, with iso‐intensity on T1WI, hyper‐intensity on T2WI and heterogeneous enhancement on contrast imaging. Endocrine examination showed her serum prolactin level increased to 1,031.49 mIU/ml. The tumor was sub‐totally resected via pterional craniotomy under microscope and was histologically proven to be a chordoma. Postoperatively, she recovered uneventfully but ptosis and hemianopsia remained at the 6th month.     

抗击严重急性呼吸综合征的医生与护士心理状态的比较与分析

为分析抗击严重急性呼吸综合征(SARS)的医生与护士的心理状态和差异,在SARS暴发的3个月中共收集了来自多家SARS定点医院的1532份医生和护士的心理健康问卷,应用时勘心理量表与Zung自评抑郁量表进行分析比较。发现无论处于一线还是二线,医生的一般心理健康得分要高于护士,自评抑郁量表得分低于护士,且护士的自评抑郁量表得分要高于常模组。逐步相关回归分析显示,抑郁量表得分同压力源,如“社会对医护人员的支持不够”,“治疗条件和生活环境不好”,“缺乏家庭亲人的支持和交流”等有关,同参加体育锻炼的程度,文化程度呈负相关。医生的心理状态和抑郁状态好于护士。提示应针对不同原因给予干预,同时应对于发现的相关因素予以改善。     

Minactivin expression in human monocyte and macrophage populations

Adherent monolayer cultures of human blood monocytes, peritoneal macrophages, bone marrow macrophages, and colonic mucosa macrophages were examined for their ability to produce and secrete minactivin, a specific inactivator of urokinase-type plasminogen activator. All except colonic mucosa macrophages produced and secreted appreciable amounts of minactivin, but only blood monocytes were stimulated by muramyl dipeptide (adjuvant peptide) to increase production. The minactivin from each of these populations could be shown to preferentially inhibit urokinase-type plasminogen activator and not trypsin, plasmin, or "tissue"-type plasminogen activator (HPA66). A plasminogen-activating enzyme present in monocyte cultures appeared unaffected by the presence of minactivin and could be shown to be regulated independently by dexamethasone.     

从2260m移居4300m人体红细胞2,3-二磷酸甘油酸浓度及有关指标的变化

观察了13名健康被试者（男8名，女5名）从海拔2260m移居4300m后14天，红细胞2，3-二磷酸甘油酸（2，3－DPG）浓度及血气参数的变化，并与世居4300m的24名藏民进行比较，以探讨2，3－DPG在急进高原适应过程中的作用。结果显示，13名被试者于2260m时红细胞2，3－DPG为4．30±0.81mmol／L，移居4300m后14天为5．05±0．83mmol／L，增加了172％（t=4．29，P＜0．01）；比当地藏民（4．49±0．06mol／L）高12．4％（t=2．33，P＜0．05）。移居4300m后血液pH增加、PaCO2和PaO2降低（P＜0．01），红细胞压积也明显增加（P＜0．05）；但与当地藏民比较，血气备指标无显著性差异。结果提示，进入高原后，红细胞2，3－DPG的适当增加是机体对低氧环境适应的生理反应。     

纤维支气管镜Nd：YAG激光治疗中心型肺癌的临床观察

本文应用Ｎｄ：ＹＡＧ激光治疗中晚期中心型肺癌４３例，显效３３例，有效１０例，总有效率达１００％。术中术后，病人情况良好，未发生大出血及其它严重并发症。认为Ｎｄ：ＹＡＧ激光治疗中心型肺癌，是一种新的、有效的、安全的治疗手段，并可提高病人生存质量。     

超生理剂量十一酸睾酮引起生精细胞凋亡的动态研究

目的：以生精细胞凋亡作为指标探讨超生理剂量十一酸睾酮（ＴＵ）抑制精子发生的机制。方法：正常生育史男性２０例肌内注射ＴＵ,应用瑞－吉染色和ＴＵＮＥＬ法对精液中脱落细胞进行凋亡率的动态检测。结果：用药后精子密度和生精细胞数较用药前显著下降（Ｐ＜０．０１）,精母细胞和精子细胞凋亡率则显著上升（Ｐ＜０．０１）。结论：ＴＵ具有显著的抑制精子发生的效应。其作用机制除通过抑制促性腺激素而导致睾丸内睾酮（Ｔ）浓度降低,继之使精子发生停滞外,还可能有促进生精细胞凋亡的作用。     

背阔肌岛状皮瓣修复上臂软组织缺损

目的 观察背阔肌岛状皮瓣修复上臂软组织缺损的临床效果。方法 应用背阔肌岛状皮瓣修复１４例上臂软组织缺损。结果 １例皮瓣远端皮肤部分坏死,１３例完成成活。随访４０－６年,受区外形及功能恢复基本满意,供区愈合良好。结论 背阔肌皮瓣由胸背动脉供给血运,该岛状皮瓣具有血供丰富,血管解剖恒定和血管蒂长以及切取容易等优点,带蒂移植适宜修复上臂软组织缺损。