口外弓配合唇档远移磨牙的临床研究

目的:研究口外弓配合唇档远移磨牙的临床应用及其疗效。方法:选择15例恒牙早期上颌轻度牙性前突或轻、中度拥挤的安氏II类患者,应用口外弓配合唇档,通过X线头影测量观察其上颌磨牙及前牙治疗前后变化情况。结果:应用口外弓配合唇档推磨牙向远中3～6个月后,II类咬合关系恢复至安氏I类关系。上颌第一磨牙向远中平均移动4.14mm,上颌中切牙向唇侧移动0.66mm。结论:只要病例选择合适,方法运用得当,口外弓配合唇档就能获得较满意的远移磨牙的疗效。     

Outpatient management of patients with large multinodular goitres treated with fractionated radioiodine

The efficacy of fractionated out-patient radioiodine therapy in 38 patients with compressive symptoms due to long-standing large multinodular goitres was assessed. The diagnosis was established by clinical assessment in addition to technetium-99m pertechnetate thyroid scan or computed tomography scan of the thyroid and mediastinum. Oral iodine-131 therapy was administered as a 2.22 GBq (60 mCi) cumulative dose over 4 months (555 MBq per month). All patients were monitored with serum thyroid-stimulating hormone and free thyroxine (± free tri-iodothyronine) assays before the treatment and after each dose fraction. Clinical and biochemical follow-up was performed on all patients and ranged from 6 to 45 months after therapy. The patients consisted of 35 female and three male patients with a median age of 59 years (range 37–87 years). Prior to treatment 20 patients were biochemically hyperthyroid and 18 were euthyroid. Overall, 71% of patients reported a subjective improvement in compressive symptoms and 29% reported no change. Clinically assessed reduction in goitre size occurred in 92% of patients while there was no change in 8%. At 3 months of follow-up, 31% of patients had become hypothyroid and at 18 months 66% were hypothyroid. Seven hyperthyroid patients (35%) became euthyroid and 13 hyperthyroid patients (65%) became hypothyroid. Three patients who became hypothyroid experienced neck soreness (transient in one patient, persistent in two patients). There were no differences in outcome between patients who were hyperthyroid and those who were euthyroid prior to treatment. Fractionated out-patient radioiodine therapy showed excellent short- and medium-term safety, was very well tolerated and offered a satisfactory alternative treatment to surgery. Received 23 May and in revised form 11 August 1997     

N-乙酰半胱氨酸对慢性阻塞性肺疾病患者血淋巴细胞DNA损伤的影响

目的　探讨N -乙酰半胱氨酸 (NAC)治疗不同病期慢性阻塞性肺疾病 (COPD)的疗效。方法　 49例稳定期、急性发作期COPD患者 ,随机分为观察组 (2 5例 )和对照组 (2 4例 ) ,观察组除给予常规治疗外 ,加用NAC(每次 2 0 0mg ,3/d ,连用 2个月 ) ;对照组仅给予常规治疗。治疗前后观察所有患者外周血淋巴细胞DNA损伤程度。结果　治疗前后比较 ,观察组稳定期、急性发作期DNA损伤明显降低 ,差异有显著性 (P <0 .0 5)。对照组稳定期DNA损伤程度亦有一定程度的改善 ,但差异无显著性 (P >0 .0 5) ,急性发作期DNA损伤程度降低 ,差异有显著性 (P <0 .0 5)。结论　COPD患者体内存在氧化 -抗氧化失衡 ,抗氧化治疗可降低COPD患者外周血淋巴细胞DNA损伤程度 ,急性发作期出现氧化应激。     

规范化介入治疗方案在肝癌经导管介入治疗中的指导意义

目的探讨规范化介入治疗方案在肝癌经导管介入治疗中的意义。方法回顾性分析实施规范化方案治疗前后患者生存率的变化。结果实施规范化方案后能明显提升患者生存率。结论规范化方案在肝癌经导管介入治疗中具有重要的指导意义。     

细菌性痢疾季节性高峰变化及其与气温关系的研究

目的 探讨气温对细菌性痢疾发病的影响。方法 应用相关回归统计法和圆形分布法对资料进行研究。结果 菌痢的月平均发病百分构成比与相应年份月平均气温呈正相关(r=0.5099,P<0.01);辖区近10年的平均气温较前10年有所上升,尤其秋冬季与初春月平均气温升高了1℃左右,而菌痢发病高峰时点明显后移(F=11.49,P<0.01),流行高峰期也有后移倾向。结论 气温对菌痢的发病有直接影响,气温升高,菌痢的发病增加,年平均气温升高可导致菌痢的发病高峰时间后移。     

围术期维持活体部分移植小肠血供的措施

目的：探讨围术期维持移植小肠血液灌注的方法，方法：男，18岁，短肠综合征患者，全麻下接受其父亲供给末段回肠150cm，行活体部分小肠移植，围主期维持出入量平衡，中度等容血液稀释，选用扩血管药，防止血管痉挛，以及抗凝治疗，结果：术的31d脱离肠外营养，至今已术后34mo，未发生移植小肠明显缺血性改变。结论：采用上述方法匀是维持围术期移植小肠血供的重要措施。     

诺氟沙星的吸附伏安法研究

在ｐＨ＝７．４９氨－氯化铵缓冲液中，诺氟沙星在滴汞电极上产生一灵敏的还原峰，峰电位为－１．５２Ｖ（ｖｓ．ＳＣＥ）。在１．９８×１０（－７）～４．８８×１０（－６）ｍｏｌ／Ｌ之间有良好的线性关系。本文对其极谱性质和电极过程进行了研究，用于诺氟沙星的测定，方法简便，结果准确、可靠。     

黄连素对培养鸡胚心室肌细胞钙单通道电流的影响

在培养的鸡胚心室肌细胞上，我们采用膜片钳技术的细胞贴附式构型，研究了黄连素（Ｂｅｒｂｅｒｉｎｅ，ＢＲ）对细胞膜钙单通道电流的影响。结果表明：ＢＲ可使心室肌细胞膜钙单通道电流明显增加；钙通道可利用率增加１１４．２％（Ｐ＜０．００１）；钙通道开放概率增加７５．３％（Ｐ＜０．０５）。用心得安阻断β受体或用异搏定阻断钙通道，均可逆转ＢＲ的上述作用。以上提示：①ＢＲ是一种钙通道激活剂；②ＢＲ对钙通道的调节作用依赖于β受体介导的磷酸化过程。     

假腔内注射凝血酶治疗股动脉假性动脉瘤(附6例临床分析)

目的：探讨超声引导下假腔内注射凝血酶对股动脉假性动脉瘤的治疗效果。方法：对本科1999年9月－2002年8月行心脏介入诊疗后并发的6例右侧股动脉假性动脉瘤进行假腔内凝血酶注射治疗，并对其结果进行了分析。结果：6例患者均即刻治疗成功，未见明显并发症，随访30d无复，结论：假腔内注射血酶是一种安全，简便，快速，耐受性佳，经济和有效的治疗股动脉假性动脉瘤的方法。