Perforation Rates for Nonsterile Examination Gloves in Routine Dermatologic Procedures

BACKGROUND: Low cost, nonsterile examination gloves are used routinely to perform various dermatologic procedures. OBJECTIVE: To evaluate the perforation rate of nonsterile examination gloves in routine dermatologic procedures. METHODS: Three hundred fifty nonsterile latex examination gloves used to perform shave biopsies were evaluated for perforations using an air inflation/water submersion method. Ninety gloves, which were intentionally perforated with a 30-gauge needle, were used as controls to assess our evaluation method. RESULTS: Eight of the 350 gloves were found to have a perforation, which corresponds to a 2.3% perforation rate. Seven of the eight perforations were found in the web space between the second and third finger sleeves, with one being an obvious manufacturing error. All 90 perforations of the control group were correctly identified. CONCLUSION: There appears to be a very low risk of glove perforation when nonsterile examination gloves are used in routine dermatologic procedures.     

Entrapment of platelets in the penis during and after erection

Because of the development of hypercoagulability and the deposition of fibrin in the penis during erection a study of the possible role of platelets in this process was undertaken. Platelet response was studied in 9 adult chacma baboons (Papio ursinus) using autologous in vitro indium-111-labelled platelets and sequential scintigraphy of the penis during erection. The blood pooling pattern was obtained using in vivo technetium-99m-labelled red cells in a similar investigation. A statistically significant retention of platelets occurred during and after erection, which could not be attributed to blood pooling (P less than 0,05). Entrapment of platelets could lead to enhanced activity and activation, and might play a significant role in hypercoagulability and fibrin deposition during erection. Therefore platelets could be an important factor in the pathogenesis of ageing impotence.     

多源耐药基因表达水平的检测在儿童白血病中的临床意义

应用逆转录ＰＣＲ结合同位素定量分析，对３２例儿童白血病患者的多源耐药基因表达水平进行了研究。结果显示，初发病人的表达均较低，复发病人表达较高，缓解期病人表达程度介于两者之间，为探讨多源耐药基因表达水平与临床化疗之间的相关性及逆转克服多源耐药性药物的应用，提供了一定的理论依据。     

Vessel enhancement filtering in three-dimensional MR angiograms using long-range signal correlation

Small vessels in three-dimensional MR angiograms have low visibility in maximum-intensity projection images because of their low contrast. In a previous study, we had two nonlinear filters that appeared to give significant improvement in small vessel detail. In this paper, we report on a generalization of this filter that allows a more general modeling of the vessels and a more complete suppression of background. One implementation of the general filter gave a vessel mean contrast-to-noise ratio that is 2.52 and 3.51 times higher than the vessel mean contrast-to-noise ratio obtained using our previously reported maximum-minimum (max-min) filter and cross- section filter, respectively.     

米非司酮配伍米索前列醇终止早孕用药方法的探讨

作者对１２０例妊娠４９ｄ以内的孕妇采用４种不同的服药方法进行药物流产，其中使用第３、４种用药方法的孕妇均于加用米索前列醇后８ｈ内排出孕囊，且２ｈ内排出率明显增加，与常规用药方法比较有显著性差异（Ｐ＜０．０１），同时对用药机理作了讨论。     

胃粘膜肠上皮化生与胃癌关系的粘液组织化学和免疫组织化学研究

应用ＡＢ（ｐＨ１．０）ＫＯＨ／ＰＡＳ粘液组织化学和ＡＢＣ法凝集素标记免疫组织化学方法对１９０例胃粘膜标本进行观察。结果表明，结肠不完全型肠上皮化生多见于肠型癌及其癌旁组织。在形态学和功能上，显示出一定程度的分化不成熟。两型肠化在弥漫型癌中无显著差异。５种凝集素受体含量和分布的差异与胃癌的组织学类型和分化程度有关，凝集素肠化分型和组织学类型的关系与粘液组化染色基本相符。我们认为不完全型肠化与肠型胃癌的发生关系密切，而完全型肠化可能与弥漫型胃癌有关。应用ＡＢ／ＫＯＨ／ＰＡＳ染色进行肠化分型和凝集素标记，对于癌前病变的检测和癌的早期诊断都具有一定价值。     

不同气功的心血管效应

用XG-2型血液循环功能测试仪,对健康中老年人,一次锻炼放松功(24人)和禅密功(28人)前后进行测试,结果表明不同气功的短时效应差别甚大,为辨证施功提供了实验根据。     

溶血磷脂胆硷对缺血性心室肌电生理的影响

用台氏液加溶血磷脂胆硷（ＬＰＣ）３ｘｌ０－４灌流离体绵羊心室小梁肌，其０期去极化最大速率（Ｖｍａｘ）、静息电位（ＲＰ）、动作电位幅值（ＡＰＡ）、动作电位复极达ＡＰＡ５０％和９０％的时程ＡＰＤ５０、ＡＰＤ９０分别下降３９．８％、１０．４％、１４．５％、２１．３％和１４．８％；用“模拟缺血溶液”加ＬＰＣ３×ＩＯ－４灌流，其Ｖｍａｘ、ＲＰ、ＡＰＡ、ＡＰＤｓ０和ＡＰＤ９０分别下降７８％、２２．７％、２６％、３５．４％和２１％；实验中对“模拟缺血溶液”中各种成分对ＬＰＣ效应的影响进行分析，发现主要的因素是酸中毒。结果表明：ＬＰＣ是心肌缺血中心律失常的重要因素之一，缺血诱导的酸中毒更加重了ＬＰＣ对心肌细胞的毒性作用。