负压引流在小切口根治腋臭术中的应用

目的:在众多腋臭治疗方法中,探索出一种能有效根治腋臭且并发症少的治疗方案。方法:利用小切口,肿胀麻醉,把带有汗腺及毛囊的皮肤修剪薄至全厚及中厚皮片厚度,术毕放置负压引流,使皮肤与基底贴合良好,并加压包扎。结果:本法共治疗32例腋臭患者,其中其他方法治疗复发者11例。除2例术后有轻微气味外,其余均得到根治,术后瘢痕不明显。结论:负压引流在小切口根治腋臭中可有效减少并发症,提高治愈率。     

应用和推广烧伤皮肤再生医疗技术的体会(二)

目的：通过临床实践总结、分析、认识干细胞与再生医学理论在烧伤创疡中的作用与效果；方法：应用MEBT／MEBO观察烧伤创疡创面的再生修复变化。结果：MEBT／MEBO治疗77种创疡疾病冶愈率达92％以上，有效率达100％。结论：MEBT／MEN)治疗慢性体表性溃疡及皮肤病性皮肤损伤、感染性溃疡效果满意。     

经皮椎板关节突螺钉固定的应用解剖及影像学研究

[目的]为经皮椎板关节突螺钉的器械设计及临床应用提供解剖学依据。[方法]利用30例干燥腰椎标本，用游标卡尺及量角器测量腰椎椎板上缘及下缘的厚度，椎板关节突螺钉的长度。通过影像学测量椎板的内倾角和下倾角。[结果]椎板的上缘薄而下缘厚。从L1～5椎板的厚度、螺钉的长度及从内倾角逐渐增加，而下倾角逐渐减小。[结论]上缘的厚度太薄不适合螺钉的放置。从L1～5使用4．5mm的皮质骨螺钉固定是安全的，但应该在椎板的下缘置人。注意下倾角和内倾角的变化。设计的瞄准器应该具有调节角度的装置。     

悬浮阵列技术在研究与临床中的应用

悬浮阵列技术是一种以荧光编码微球为核心,集流式细胞、激光分析、高速数字信号处理等多种技术于一体的多指标并行分析技术平台,可一次同时准确定量检测100种不同的生物分子;具有高通量、高灵敏度,并行检测等特点;常用于免疫分析、核酸研究、酶学分析、受体、配体识别分析等研究.     

人体β-胡萝卜素的肠转化和吸收后转化的研究

目的 :为了解部分中国人体内 β 胡萝卜素 ( β carotene ,以下简称 β C)转化维生素A (vitaminA ,以下简称VA)的效率 ,开展了本研究。方法 :使用稳定同位素稀释法对 15名 5 0 60岁健康农村志愿者 (男 9,女6)进行β C人体代谢实验。 2周适应期和 5 6天实验期内 ,志愿者接受常规膳食 ,避免大量VA和 β C摄入以及烟、酒和营养补充剂。实验第 1天 ,给受试者含 6mg氘标记 β C( 2 H8β C)玉米油胶丸 ,随半流质早餐 (脂肪热能比 2 5 % )一起摄入。实验第 4天 ,受试者以同样方法摄入含 3mg氘标记醋酸视黄醇 ( 2 H8RAC)油剂胶丸。实验第 1天和第 4天摄入标记物后 0 ,3 ,5 ,7,9,11,13h时 ,实验第 2 ,3 ,5 ,6,7,8,9,10 ,14,2 1,2 8,3 5 ,42 ,49,5 6天晨空腹时 ,采静脉血。用高效液相色谱仪 (HPLC)分离血清 β C和VA组分 ,再分别使用气相质谱仪(GC MS)和液相质谱仪 (LC MS)测定VA和 β C组分的同位素丰度。根据VA和 β C的浓度和同位素丰度 ,描述标记VA和β C在体内应答的血液动力学曲线。 结果 :所有 15名受试者对2 H8RAC应答明显 ;但是在对2 H8β C的应答方面 ,只有 11名受试者2 H4视黄醇应答曲线明显 ,有 4名受试者血清2 H4视黄醇应答曲线非常微弱。经过对备份血清样品进行的多次重复GC MS测定 ,我们目前初步?     

Epidural block for obstetrics: Comparison of bolus injection of local anesthetic with gravity flow technique

Study Objective: To test the hypothesis that slow administration of local anesthetic into the epidural space by gravity flow reduces the incidence of signs and symptoms of unintended injection.

Design: Prospective, randomized study.

Setting: Teaching hospital.

Patients: 600 ASA physical status I and II parturients scheduled for labor and delivery or elective cesarean section.

Interventions: After identification of the epidural space with pulsations of an air-fluid column, parturients for vaginal delivery (n = 380) were randomized to receive a test dose of 3 ml 3% 2-chloroprocaine with epinephrine 20 μg, two doses of 7 ml bupivacaine 0.03 % with sufentanil 1 μg/ml and epinephrine 2 μg/ml by either gravity flow (Group 1) given over 30 seconds or by bolus injection (Group 2) given over 5 seconds through the epidural needle; parturients for Cesarean delivery (n = 220) were randomized to receive a test dose and two doses of 6 ml lidocaine 2 % with sufentanil 1 μg/ml and epinephrine 2 μg/ml by either gravity flow or by bolus injection through the epidural needle. Changes in maternal heart rate (HR) and blood pressure, signs of intravascular injection, and adverse effects of epidural bupivacaine-sufentanil were recorded after each dose.

Measurements and Main Results: Gravity flow administration (Group 1) was associated with a smaller increase in mean maternal HR (p < 0.001), less hypotension (p < 0.01), sedation (p < 0.01), nausea (p = 0.01), and segmental spread (p < 0.0001) than were corresponding doses given by traditional bolus injection (Group 1) for vaginal or Cesarean deliveries. The incidence of systemic toxicity was zero of 300 (0%) with gravity flow and 4 of 300 (1.3%) by bolus injection, p = 0.12, Fisher's exact test. No patient in either group had an accidental intrathecal injection.

Conclusion: Gravity flow administration of local anesthetic-opioid solution during epidural block for obstetrics was associated with fewer signs of systemic drug absorption and cardiovascular perturbations than was the traditional bolus injection. This study supports the current opinion that slow administration of local anesthetic during epidural black contributes to fewer adverse events.     

Allergic contact dermatitis from grasses

This study attempts to demonstrate the existence of allergic contact dermatitis from grass, and to develop a patch test series to screen patients with grass intolerance. 6 common grass species from lawns and military training areas were collected. Solvent extracts of polar. non-polar and volatile fractions were prepared and used for patch testing in 20 control subjects and 46 patients with a history of grass intolerance. The 20 control had negative responses to patch testing. 5 out of 46 patients had positive patch tests to Axonopus compressus (carpet grass). Ischaenmum muticum (sea-shore centipede grass). Imperata evlindrica (lalang). Panicum maximum (Guinea grass) and Pennisetum purpureum (elephant grass). Reactions to the non-polar fraction for all 5 species were noted. This study demonstrates the existence of allergic contact dermatitis from various common species of grass. In our series, this is seen in 11% of those with a history of grass intolerance.     

大鼠下丘脑弓状核的形态计量研究

为了探讨急性癫痫弓状核形态改变与可复性，我们采用光、电镜技术和形态计量方法对下丘脑弓状核进行了形态定量研究。结果显示：弓状核切面面积为317500±6460um2，神经元胞体和胞核的等效直径分别为12.94±0.34um和8.54±0.43um，暗细胞内线粒体、粗面内质网、高尔基复合体、溶酶体、游离核相体和分泌颗粒的面积分数分别是5.87±1.98％、3.53±0.25％、0.81±0.49％、2.13±0.42％、10.53±0.46％和0.86±0.35％，其面数密度（单位面积为30um2）分别为15.68±1.14um-2、21.29±3.52um-2、10.20±0.42um-2、5.62±067um-2、101.35±7.55um-2和5.22±0.77um-2.本文还对弓状核的形态结构、神经元类型及其功能进行了讨论。     

Demonstration of dilatation of peripheral airways

Summary. To investigate the ability of various lung-function tests to demonstrate dilatation of peripheral airways, ten asthmatics inhaled increasing doses of a f2-agonist by two different and controlled techniques. Low inspiratory flow with a long post-inspi-ratory pause favoured peripheral deposition, and a high inspiratory flow with a short post-inspiratory pause favoured central deposition of drug in the airways. Ordinary spirometry, maximum expiratory flow rates after breathing air as well as a helium-oxygen mixture, a single breath N₂-test and resistance of the respiratory system were obtained before and after each of five terbutaline doses with both inhalation techniques. By using a double-dummy technique, the study could be performed double blinded. Effects were compared at doses giving equal effects on PEF, assumed to represent equal deposition of bronchodilator and effects on central airways. At such ‘iso A PEF doses’, particularly FVC and the slope of phase III of the N₂-test improved more following the slow inhalation technique. It is concluded that changes in those tests reflect dilatation in peripheral airways in asthmatics.,