Oral and subcutaneous sumatriptan in the acute treatment of migraine: an open randomized cress-over study

In an open, randomized cross-over study in 124 patients, we compared the efficacy, safety and patient preference of oral and subcutaneous sum triptan in the acute treatment of migraine. Patients were treated for 3 attacks or 3 months and then crossed over. Primary clinical efficacy was defined as a reduction in headache severity on a four-point self-rating scale from severe (3) or moderate (2) to mild (1) or none (0), or mild (1) to none (0). Efficacy was evaluated 2 h after the administration of subcutaneous and 4h after the administration of oral sumatriptan. Subcutaneous sumatriptan was significantly more effective than oral sumatriptan in relieving headache (over all three attacks 78% vs 61% improvement), improving clinical disability (55% vs 41 % improvement) and relieving nausea (69% vs 53%), vomiting (72% vs 32%) and phono- or photophobia (67% vs 49%). Median time to recurrence was shorter after subcutaneous (12.5 h) than after oral sumatriptan (18 h); the number of patients experiencing a recurrence was similar Patients reported more adverse events after subcutaneous sumatriptan (1.32 per attack) than after the oral form (0.85 per attack), but all adverse events were mild to moderate in intensity and of short duration. Patient opinion was more often positive after subcutaneous sumatriptan. These results may be useful in counselling patients to choose between the available marketed formulations of sumatriptan.     

硝基胍的毒性研究

目的对硝基胍的毒性进行研究,为制订卫生标准提供依据.方法包括急性毒性试验、蓄积毒性试验及亚慢性毒性试验.结果硝基胍大鼠经口LD50为8 066 mg/kg,小鼠经口LD50为10 044 mg/kg,蓄积系数大于5.3.亚慢性毒性试验中,高剂量组雄性大鼠在染毒第3周和第8周,体重有明显的负增长(P＜0.05);高剂量组雄性大鼠睾丸脏器系数明显高于对照组(P＜0.05);红细胞免疫功能测定结果显示,中、高剂量组大鼠红细胞受体花环率分别为10.00±2.37和7.50±2.66,明显低于对照组(P＜0.05,P＜0.01).其余各项指标未见明显改变.结论硝基胍属于微毒级毒物,轻度蓄积,亚慢性毒性试验对动物有一定的影响.     

A simple method for screening assessment of acute toxicity of chemicals

We proposed a simple method for screening assessment of acute oral and dermal toxicity using only three rats and mice of each sex at each dose level. Animals were first treated with chemicals at a dose of 2000 mg/kg and were carefully observed for compound-related morbidity and mortality. If none of the animals died, the following toxicity tests were suspended. If some of the animals died, toxicity tests at doses of 200 and 20 mg/kg were performed. The approximate LD₅₀ values calculated by this method showed little difference between two separate laboratories and were in good agreement with LD₅₀ values reported in the literature. Our toxicological data also showed that LD₅₀ values were about 2–2.5 times the MNLD (maximum non lethal dose) in acute oral and dermal toxicity. This meant that a chemical could be regarded as having an LD₅₀ of about 4000 mg/kg or higher when there was no mortality at the dose of 2000 mg/kg. A chemical with such low toxicity would not require further testing for lethal effects. Therefore, this simple method combining the fixed-dose procedure with the limit test is suitable for determination of approximate LD₅₀ values of chemicals and for screening for necessity for classical full LD₅₀ test using many animals.This work was supported by a grant from Ministry of Health and Welfare in Japan (No. 467 and 511)     

急性肠系膜静脉血栓形成16例临床分析

目的　分析急性肠系膜静脉血栓形成 (ASMVT)的临床特征和诊断方法。方法　对北京友谊医院 1985年 10月至 2 0 0 2年 10月确诊的 16例ASMVT的临床资料进行分析 ,并结合文献 ,总结ASMVT的临床特征和诊断方法。结果 16例ASMVT患者 ,年龄 19～ 6 4岁 (平均 4 5 9岁 )。主要症状有腹痛 ( 16 / 16 )、腹胀 ( 16 / 16 )、呕吐 ( 10 / 16 )、发热 ( 8/ 16 ) ,主要体征有腹部膨隆 ( 16 / 16 )、腹膜刺激征( 16 / 16 )。误诊率 75 % ( 12 / 16 ) ,死亡率 4 4 % ( 7/ 16 )。结论　ASMVT的临床表现有一定的特征 ,早期彩色超声检查、诊断性腹腔穿刺、结合CT或肠系膜上动脉造影异常发现可对ASMVT做出正确的诊断 ,早期手术可以降低死亡率     

急性心肌梗死后室间隔穿孔患者的外科治疗

目的:探讨急性心肌梗死(AMI)后室间隔穿孔(VSR)的外科治疗方法和结果。方法:回顾分析手术治疗的8例急性心肌梗死后室间隔穿孔患者的临床资料。男性7例,女性1例,年龄62～74岁,平均年龄67．5岁,均有急性心肌梗死史,4例有高血压病史,2例有糖尿病史,6例合并室壁瘤。心功能NYHAⅢ级6例,Ⅳ级2例。术前射血分数(EF)值33％～71％,平均54．5％。患者心肌梗死至手术的间隔时间平均为5．4周。所有患者均采用牛心包补片旷置室间隔穿孔,7例患者同期行冠状动脉旁路移植术,平均2．7支／例。结果:手术死亡2例,死亡率25％。其中1例因多脏器功能衰竭于术后32 d死亡,另1例因肾功能不全于术后6 d死亡。存活6例随访3～24个月,平均13．2个月,无晚期死亡,无心血管事件。心功能NYHAⅠ级5例,Ⅱ级1例。术后EF值50％～66％,平均58．3％。结论:掌握适当的手术时机、完善的术前准备、积极的围手术期治疗、准确的手术操作和避免术后并发症的发生,能有效地降低急性心肌梗死后室间隔穿孔患者的死亡率,改善其预后。     

96例急性迟缓性麻痹病例监测分析

目的：观察急性迟缓性麻痹病例（AFP）在我市的发病状况。方法：对96例急性迟缓性麻痹病人采集48h内粪便进行病毒分离，并进行个案调查与随访。结果：96例中，7例分布于城镇，89例分布于农村；格林-巴利综合征55例（57.3%）-横断性脊髓炎16例（16.6%）、神经炎11例（11.5%）、重症肌无力12例（12.5%）、与疫苗相关的脊髓灰质炎AFP病例（VAPP）2例（2.08%）。结论：防疫部门与各级医院加强合作和直接管理能及时了解发病状况。市髓灰质炎减毒疫苗（OPV）免疫工作尚存不足，宣讲教育应进一步加强。     

急性脑梗死血压和颅压的控制

脑梗死急性期对血压和颅压的控制极为重要，若措施得当，可大大降低病死率和致残率。笔者结合临床工作经验总结体会如下：脑梗死急性期对血压和颅压的控制极为重要，若措施得当，可大大降低病死率和致残率，笔者结合临床工作经验总结体会如下。     

21例心内直视术后急性心包填塞的临床分析

目的:分析21例心内直视术后急性心包填塞的临床特点,探讨其发生原因、预防、救治及其二次开胸的早期指征。方法:对1991年1月-2005年12月心内直视术(共1096例)后21例急性心包填塞二次开胸(发生率1．92％)病例进行总结分析。结果:急性心包填塞患者经二次剖胸解除心包填塞后17例痊愈出院,4例死亡,二次剖胸手术死亡率为19．05％。二次剖胸手术者所患疾病包括先天性心脏病6例,瓣膜病13例,大血管手术1例,心脏移植1例。结论:减少心内直视术后出血、渗血是避免术后发生急性心包填塞的关键,早期诊断并尽早行二次剖胸手术可明显降低围手术期死亡率。