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心包开窗术在冠状动脉旁路移植术中的应用

目的分析心包开窗术在冠状动脉旁路移植术（CABG）中的应用效果。 方法回顾性分析2011年1月至2013年4月邢台市第三医院332例冠心病患者行CABG术的临床资料。按是否行心包开窗术分为两组。开窗组：166例（男119例、女47例），年龄36～72（62.7±10.3）岁，关胸前放置心包纵隔引流管同时行心包开窗术；对照组：166例（男122例、女44例），年龄38～79（62.2±11.4）岁，关胸前放置心包纵隔引流管，未行心包开窗术。拔除引流管后1～30 d出现中等量以上积液为迟发性胸腔积液或心包积液。 结果全组手术均成功，无死亡病例；开窗组术后发生2例膈肌上抬，反复呃逆，经药物治疗后好转。两组手术时间、体外循环时间，主动脉阻断时间、死亡率差异无统计学意义（P＞0.05）。开窗组迟发性胸腔/心包积液发生率较对照组低（7.2% vs.23.5%，P＜0.05)。开窗组住ICU时间、住院时间、住院费用低于对照组，差异有统计学意义（P＜0.05）。 结论心包开窗术用于预防冠状动脉旁路移植术后胸腔积液与心包积液安全、有效。

Influence Factors on Monomer Conversion of Dental Composite Resin

Dental composite resin is a kind of material which has been widely used in dental restoration. Research has found that the influence of residual monomer on the material mechanical, chemical and biological properties cannot be ignored. This paper elaborates these harms of residual monomers. The effects of resin matrix, inorganic filler and initiating system, illumination, secondarily treatment on the degree of conversion were also analyzed. The paper also discusses the effective measures to increase the conversion, and offers theoretical basis for the clinical application and development of composite resin.

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