3种粘结材料对金属嵌体冠边缘微渗漏的影响

嵌体覆盖牙冠的大部或全部者称为嵌体冠。相对于全冠修复,它磨除牙体组织少,有时可不需破坏基牙一侧的邻接关系,对牙龈刺激少。但另一方面,嵌体冠的边缘线较长,如何减少边缘微渗漏一直是关注的重点。本实验主要是比较3种不同类的粘结材料对镍铬合金嵌体冠边缘微渗漏的影响,为嵌     

瑞诺——用于口腔黏膜缺损修复的组织工程支架材料

瑞诺脱细胞异体真皮基质（acellular dermal matrix,ADM）医用组织补片是一种天然细胞外基质（ECM），为组织工程的支架材料，可修复因肿瘤、外伤等所致的口腔黏膜缺损，还可用于唇部瘢痕松解、前庭沟加深、腭裂修复、腮腺切除术后预防Frey’s综合征、关闭种植牙创面、填充拔牙创及治疗牙龈萎缩等；目前亦广泛用于耳鼻咽喉头颈外科的组织修复。     

儿童肺炎病原学分析

儿童肺炎病原学报道很少,现将我院收治的37例儿童肺炎病原学检查结果作一报道,旨在重视病原学,减少滥用抗生素.     

针灸刀治疗枕大神经痛86例

枕大神经痛是一种常见的顽固性头痛,发病原因尚不完全清楚,治疗也无特效办法。有人主张手术切除,多不被患者所接受。笔者在古代九针的基础上,研制了针灸刀治疗枕大神经痛,此法即非手术,又非针灸,乃是在穴位上(或阿是穴)应用针灸刀,进行剥离松解,疏通经络,往往一次即愈、有“针到病除”之效,现报道如     

胸大肌肌皮瓣在口腔颌面部缺损修复中的应用

报道２１９例口腔颌面部肿瘤，其中良性肿瘤１８例，恶性肿瘤２０１例，在肿瘤切除后，均采用胸大肌肌皮瓣修复缺损。采用单皮岛肌皮瓣２０１例，双皮岛肌皮瓣１６例，肌皮骨瓣２例。成功２０１例，失败１８例。讨论了胸大肌皮瓣的优点及适用范围。介绍了手术设计、操作方法。分析了成功与失败的影响因素，认为正确，精细的手术技巧是成功的关键因素。     

“高梁之变,足生大丁”析义辨正

《素问·生气通天论》中的“高梁之变 ,足生大丁”一语 ,自唐代的王冰注始 ,历经宋、明、清 ,时至今日 ,人们对此句的理解 ,可谓是智者见智、仁者见仁 ,始终未能统一 ,问题的关键在于对“足”的认识。或谓“足”即今义之“脚”,或谓“足”为“是”字之讹 ,或谓“足”为“多”之     

不同液体术前急性高容量血液稀释对深静脉血栓病人血液流变学的影响

Objective To investigate the effects of acute hypervolemic hemodilution (AHH) with different fluids on blood rheology in patients with deep vein (femoral and iliac) thrombosis. Methods Thirty ASA I or II patients aged 40-64 yr who had developed deep vein thrombosis in 48 h and were scheduled for embolectomy were randomly divided into 3 groups ( n = 10 each) ; group I normal saline (NS) ; group II 6 % HES 200/0.5 ( HES) ; group IE gelofusine (GEL). AHH was performed with normal saline, 6% HES or gelofusine infusion at 20 ml·kg-1 ·h-1 for 40 min. MAP, HR and SpO2 were monitored. Blood loss, volume of blood transfusion and fluid infused and urine output during operation were recorded. Anesthesia was induced with fentanyl 3-5 fig/kg, etomidate 0.15-0.30 mg/kg, propofol 1-2 mg/kg and succinylcholine 1-2 mg/kg and maintained with 2% isoflurane and propofol infusion at 5-8 mg·kg-1·h-1 and intermittent iv boluses of vecuronium. The patients were mechanically ventilated (VT 8 ml/kg, RR 12 bpm). PaO2 and PaCO2 were maintained within normal range. Venous blood samples were obtained before and after AHH for measurement of hematocrit (Hct), whole blood viscocity (WBV) at low or high shear rates, plasma viscosity, RBC aggregation and RBC deformation. RBC aggregation index and RBC deformation index were calculated. Results MAP and HR were stable in all patients. The amount of blood transfusion and fluid infused was significantly less in group HES and GEL than in group NS. The WBV at low or high shear rates in group HES and GEL, Hct in all 3 groups and RBC aggregation index in group HES were significantly decreased after AHH, but the RBC deformation index was significantly increased in group HES. Conclusion Colloid is better than crystalloid and HES is better than gelofusine in improving intraoperative hypercoagulability and sluggish blood flow.     

下肢深静脉完全胃肠外营养的护理探讨

目的：完全胃肠外营养为不能从胃肠道摄入的各类重病人补充营养物质和治疗。方法：从股静脉或大隐静脉将硅胶送至下腔静脉，利用此管道输注高能营养液。特点：下肢深静脉ＴＰＮ既方便了护理操作，且减轻了患者的恐惧心理。     

心脏微循环血管的扫描电镜观察Ⅰ.心脏血管球

应用血管铸型、扫描电镜观察方法，研究了２例成人及１例儿童的左冠状动脉前降支中段心肌浅层及其周围的脂肪组织内的心脏血管球的三维构筑。根据形态特点，将心脏血管球分为圆球型、柱型、多角型、捆绑型、绒团型及鸭梨型，并对各型心脏血管球的形态结构特点进行了描述，且阐述了这些心脏血管球的临床意义。