硬膜外腔压力检测仪试制与应用

1920年Page首先用普鲁卡因进行腰部硬膜外麻醉,并于1921年发表了43例临床应用报告,硬膜外麻醉应用至今已有近80年历史。国内自50年代开始应用,由于其止痛完善,肌松满意,术后恢复快,护理工作量轻,而且操作简便,设备简单,花费少,很快成为我国主要麻醉技术之一。我院硬膜外麻醉约为40％。但麻醉作用的满意率(完善率)约90.4％,仍有1.69％的失败率,7.87％的不完善率,其中穿刺成功率是基础环节,而硬膜外腔压力的检测成为关键技术。 我们采用了现代高技术研制出硬膜外腔压力检测仪。临床硬脊膜外阻滞麻醉穿刺时采用本设备,可以得到人体内准确的压力信息,克服了依靠个人的感觉、经验等传统方式判断穿     

实验性颅内压增高对频域心电图的影响

本文观察颅内压（ICP）升高对频域心电图（FCG）的影响。8只猫戊巴比妥麻醉后,右颞部硬膜外放置球囊,左边侧脑室穿刺置管测脑脊液压,向球囊内注盐水使ICP阶梯性升高,分别升至4.0,5.3,8.0,10.6,13.3,17.3KPa,ICP升高稳定5分钟后,同时观察瞳孔、血压、ECG和FCG等的变化。FCG的指标有Px,Py,Fmin,Rx,Ry和Rxy。     

Comparative Characterization of Maxillary Expansion and Alternate Maxillary Expansions and Constrictions in Rats

The purpose of this study was to evaluate whether the cranial and circumaxillary sutures react differently to maxillary expansion （ME） and alternate maxillary expansions and constrictions （Alt-MEC） in a rat model. Twenty-two male Sprague-Dawley rats （6 weeks old） were used and divided into three groups. In ME group （n=9）, an expander was activated for 5 days. In Alt-MEC group （9 animals）, an al- ternate expansion and constriction protocol （5-day expansion and 5-day constriction for one cycle） was conducted for 2.5 cycles （25 days total）. The control group comprised 4 animals with no appliances used, each of two sacrificed on day 5 and day 25 respectively. Midpalatal suture expansion or constriction levels were assessed qualitatively and quantitatively by bite-wing X-rays and cast models. Distances between two central incisors and two maxillary first molars were measured on cast models after each activation. Circumaxillary sutures （midpalatal, maxillopalatine, premaxillary, zygomaticotemporal and frontonasal suture） in each group were characterized histologically. Results showed that midpalatal suture was wid- ened and restored after each expansion and constriction. At the end of activation, the widths between both central incisors and first molars in Alt-MEC group were significantly larger than those in ME group （P〈0.05）. Histologically, all five circumaxillary sutures studied were widened in multiple zones in Alt- MEC group. However, only midpalatal suture was expanded with cellular fibrous tissue filling in ME group. Significant osteoclast hyperplasia was observed in all circumaxillary sutures after alternate expan- sions and constrictions, but osteoclast count increase was only observed in midpalatal suture in ME group. These results suggested that cranial and circumaxillary sutures were actively reconstructed after Alt-MEC, while only midpalatal suture had active reaction after ME.     

无鼾人群上气道形态的研究进展

自20世纪80年代，人们对阻塞性睡眠呼吸暂停低通气综合征（obstructive sleep apnea hypopnea syndrome，OSAHS）患者上气道形态的认识，随多种影像研究手段的介入而逐步深入。相比于OSAHS患者，无鼾人群的上气道形态则缺乏研究。     

颅脑手术麻醉处理(附303例分析)

颅脑手术麻醉,除要求达到镇痛完全,维持生命体征平稳和减少不良反应外,尤应力求术中维持较低的颅内压水平。现结合我院1981年来303例颅脑手术探讨其麻醉处理。     

前牙反He矫治的He与颌位探讨

通过对４２例前牙反Ｈｅ反应ＦＲⅢ型功能矫治器、上颌Ｈｅ垫矫治器及方丝弓矫治器的矫治，探讨其功能特点和矫治原则，得出：（１）功能性反Ｈｅ者ＩＣＰ前移，骨性反Ｈｅ者ＩＣＰ正常，两者的临床鉴别不能单纯看下颌能否后退至对刃位；（２）前牙反Ｈｅ矫治的咬合重建，不能以后退接触位为基准，只有在肌位建Ｈｅ才是最符合生理的；（３）固定矫治对反覆Ｈｅ小于３ｍｍ者可不加Ｈｅ垫，固定矫治反覆Ｈｅ大于３ｍｍ者及活动矫治应加     

直丝弓矫治技术系列讲座（四）（第二阶段：覆盖与磨牙关系矫正）

直丝弓矫治技术系列讲座（四）（第二阶段：覆盖与磨牙关系矫正）刘月华，傅民魁，曾祥龙正畸拔牙提供的间隙主要用于：①排齐牙齿。②适当内收切牙，使之有正常的突度和稳定的位置。③当不可能以控制生长的方法矫正颌骨矢状关系不调时，通过上、下牙弓牙齿的差别移动来关...     

多用唇弓的临床使用

本文介绍多用唇弓的类型与制作,并对其原理、适应及使用要点进行简要讨论。作者认为,多用唇弓是方丝弓矫治技术应用Begg轻力矫治原则的实例,能够在对支抗后牙影响较小的情况下有效地矫正前牙垂直不调和矢状不调,是方丝弓矫正器中一种简单实用的辅助唇弓。