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上颌前突矫治术后软组织侧貌改变的研究 总被引:2,自引:1,他引:1
目的:分析上颌前份节段性骨切开矫治上颌前突术后软组织侧貌改变情况,探讨其稳定性。方法:对21例上颌前份节段性骨切开成年男性患者术前、术后1个月及术后1年的X线头影测量片进行对比研究。结果:术后软组织侧貌改变:上中切牙切缘点Is平均后移6.1±2.7m(mP<0.01),上唇突点Ls平均后移4.6±1.6m(mP<0.01),鼻唇角Cm-Sn-Ls平均增加6.8°±5.6(°P<0.01),上下唇间隙Stms-Stmi平均缩小4.5±3.5m(mP<0.01),露齿程度Is-Stms平均减小2.1±2.2m(mP<0.05),上唇突度减小,上唇厚度、长度及软组织面型角G-Sn-Pgss无显著改变(P<0.05)。术后1年颜面软组织侧貌改变的稳定性与术后早期相比,在水平方向上,所有指标复发率均超过10%。在垂直方向上各项指标复发率均在10%以内。结论:上颌前份节段性骨切开术矫正上颌前突,患者软组织侧貌的改善明显,效果稳定。 相似文献
34.
左旋布比卡因腰-硬联合阻滞在下肢手术的应用 总被引:7,自引:1,他引:6
目的探讨0.75%左旋布比卡因用于蛛网膜下隙阻滞的临床效果及安全性。方法随机选择ASAⅠ~Ⅱ级的40例骨科下肢手术患者(股骨干及髋关节大手术的患者),随机均分成两组:L组腰麻用药为0.75%左旋布比卡因15mg,容量为2.5ml;B组腰麻用药为0.75%布比卡因,剂量及容量同L组。术中必要时经硬膜外导管注入2%利多卡因。术中监测BP、HR、SpO2、RR的变化并观察围术期不良反应的发生。结果两组最高阻滞平面及到达时间、麻醉持续时间、肌松效果及达到最大肌松效果时间差异均无显著意义。两组均无神经系统的不良反应。结论0.75%左旋布比卡因用于腰-硬联合麻醉骨科下肢手术安全有效,效果与0.75%布比卡因相比差异无显著意义。 相似文献
35.
Distribution patterns of transforaminal injections in the cervical spine evaluated by multi-slice computed tomography 总被引:1,自引:1,他引:0
Transforaminal injections are sometimes used for the diagnosis and treatment of painful conditions in the lumbar and to a lesser degree in the cervical spine. The technique is most often used when investigating/treating radiculopathy caused by degenerative disease. But how selective are the nerve root blocks? What possible structures other than the intended nerve root are affected from such injections? This study was undertaken in order to try to answer these questions, as no study focusing on the possible spread from the transforaminal selective nerve root blocks in the cervical spine has been performed earlier. In three groups of patients, each group including three patients, we injected three different volumes (0.6, 1.1 and 1.7 ml) with a transforaminal technique in the cervical spine. In all the injections, a small amount of contrast media was added. The spread of the injections were then investigated using multi-slice computed tomography with reconstructions. The imaging revealed a possible effect on other nerve roots than the intended ones when a larger volume was used for the root blocks. The spread was related to the injected volume as well as to local anatomy (size of foraminal area). In this study, only 0.6-ml injections could be accepted for being selective enough for diagnostic investigations. 相似文献
36.
Twenty-five women receiving sedation for outpatient hysteroscopic polypectomy were injected with 0.25% bupivacaine 10 mL (paracervical group) and another 25 received the same volume of saline (control group) at the cervical fornix. Both groups were given target-controlled propofol sedation during the procedure. More propofol (mg/min) was needed for adequate anesthesia in the control group compared to the paracervical group (6.5 versus 4.6). In addition, the postoperative pain scores were lower in the paracervical group than in the control group. Hemodynamic changes and postoperative side effects were similar in the two groups. This prospective, randomized, double-blind, placebo-controlled study confirmed the effective use of paracervical blocks. This approach has the effect of reducing the amount of intraoperative propofol and decreasing postoperative pain in outpatient hysteroscopic surgery. 相似文献
37.
J. M. Troyano M. T. Clavijo A. Gonzalez-Lorenzo I. Martí nez-Wallin O. Y. Marco P. S. Casas L. Martí nez-Cort s L. T. Merc J. Bajo-Arenas N. Hernandez D. Castro 《The Ultrasound Review of Obstetrics & Gynecology》2006,6(1):79-99
In order to assess the state and pathology of the woman's pelvis minor, a number of methods are commonly used among practitioners, encompassing clinical exploration, radiology, MRN, urodynamics, endoscopy and echography.
Echography has been poorly used in clinical pelvic exploration and its reliability is actually a matter of controversy 1. However, echographic surveys can provide us with valuable gynecological data on the state and pathologies of the soft pelvis, within the genital regions or even going beyond them, i.e. the rectal channel, bladder, urethra, anus, vascular plexuses, and all of their supporting tissues.
At our research unit, we have been employing Transvaginal Ultrasound echography (TVU) for a long time in conjunction with other pelvis-focused methods in order to study different kinds of pelvic alterations. TVU has proven to be friendly to use, fast, harmless and inexpensive, allowing serial explorations and producing high-quality dynamic images (loop-cinema, video-tape). Furthermore, this method is fairly aseptic in that the occurrence of faeces in the rectal ampolla is not a nuisance but a bonus in tracking the contours of the rectum walls and other topographical features which would be otherwise difficult to survey.
A complete pelvic floor TVU may add no longer than 5-8 minutes to a routine gynecological examination, can be implemented by the general gynecologist and generates data that can be further studied by the appropriate specialist for a more insightful evaluation 2. 相似文献
Echography has been poorly used in clinical pelvic exploration and its reliability is actually a matter of controversy 1. However, echographic surveys can provide us with valuable gynecological data on the state and pathologies of the soft pelvis, within the genital regions or even going beyond them, i.e. the rectal channel, bladder, urethra, anus, vascular plexuses, and all of their supporting tissues.
At our research unit, we have been employing Transvaginal Ultrasound echography (TVU) for a long time in conjunction with other pelvis-focused methods in order to study different kinds of pelvic alterations. TVU has proven to be friendly to use, fast, harmless and inexpensive, allowing serial explorations and producing high-quality dynamic images (loop-cinema, video-tape). Furthermore, this method is fairly aseptic in that the occurrence of faeces in the rectal ampolla is not a nuisance but a bonus in tracking the contours of the rectum walls and other topographical features which would be otherwise difficult to survey.
A complete pelvic floor TVU may add no longer than 5-8 minutes to a routine gynecological examination, can be implemented by the general gynecologist and generates data that can be further studied by the appropriate specialist for a more insightful evaluation 2. 相似文献
38.
本文报告113例脑前循环系统动脉管其中包括颈内动脉后交通动脉瘤75例.前交通动脉瘤17例,大脑中动脉瘤10例,人脑前动脉-胼周动脉瘤3例,颈内动脉-眼动脉瘤2例,颈内动脉海绵窦段动脉瘤1例.多发动脉瘤5例.共118个动脉瘤在显微镜下直视手术,动脉瘤直接夹闭术108例.孤立或包裹术5例:5例多发动脉瘤行同期手术3例,分期手术2例.术中发生动脉瘤破裂18次.Hunt和HessⅠ~Ⅱ级病人中有例行早期手术.全组术后死亡率为7.9%.着重讨论手术时机.术中动脉瘤破裂处理及多发动脉瘤的治疗. 相似文献
39.
U. Ravens Michael O. Flüß Q. Li Herbert M. Himmel Erich Wettwer Michael Klockow Inge Lues 《Naunyn-Schmiedeberg's archives of pharmacology》1997,355(6):733-742
The thiadiazinone derivative [+]-EMD 60263 ((+)-5-(1-(α-ethylimino-3,4-dimethoxybenzyl)-1,2,3,4- tetrahydroquinoline-6-yl)-6-methyl-3,6-dihydro-2H-1,3,4
-thiadiazine-2-on) is a Ca2+-sensitizing agent with only minor phosphodiesterase inhibitory activity. Our aim was to characterize the inotropic and electrophysiological
effects of [+]-EMD 60263 and its enantiomer [-]-EMD 60264 in several cardiac muscle preparations. The Ca2+-sensitizing activity resided in the [+]-enantiomer only. [+]-EMD 60263 (3 μM) shifted the EC50 of Ca2+ for contractile activation of skinned fibers of pig heart from 2.41 μM to 0.73 μM, whereas [-]-EMD 60264 (30 μM) was ineffective.
In Langendorff-perfused guinea pig hearts, [+]-EMD 60263 and [-]-EMD 60264 induced concentration-dependent positive and negative
inotropic effects, respectively; both enantiomers reduced spontaneous heart rate but did not influence perfusion pressure.
The maximum increase in force of human atrial trabeculae was 35 % of pre-drug control with [+]-EMD 60263 in comparison to
113 % with forskolin. In guinea-pig papillary muscles, [+]-EMD 60263 and [-]-EMD 60264 had opposite inotropic responses, however,
both agents similarly prolonged action potential duration. Both enantiomers concentration-dependently blocked the rapidly
activating component IKr of the delayed rectifier in guinea-pig myocytes. The block saturated at potentials positive to +30 mV, closely resembling
the effects of the antiarrhythmic agent E-4031 which had been originally used to define IKr. It is concluded, that the positive inotropic action of [+]-EMD 60263 can be explained by prevalence of the Ca2+-sensitizing effect. The accompanying prolongation in action potential duration is caused by block of the IKr component of the delayed rectifier. While the inotropic effects are stereoselective, most of the electrophysiological actions
are clearly independent of sterical configuration. The combination of Ca2+-sensitizing with class-III antiarrhythmic action may provide an interesting pharmacological profile of potential therapeutic
use.
Received: 7 January 1997 / Accepted: 25 February 1997 相似文献
40.
颈丛阻滞常可引起心率增快 ,血压增高 ,被认为是颈动脉窦及迷走神经被阻滞 ,交感神经活性增强所致 [1 ]。我们采用艾司洛尔预注射的方法 ,抑制颈丛阻滞后的心血管副反应 ,取得了良好的效果 ,现介绍如下。1 临床资料和方法1.1 一般资料 选择 ASA I~ 级 ,择期行甲状腺瘤或囊 相似文献