女性飞行学员高空飞行生理生化耐受能力研究

为从高空缺氧耐力训练前后生理、生化角度探讨中国女飞行员驾驶战斗机的可行性,在地面模拟高空缺氧及高空飞行训练前后行心电图、心率、血氧饱和度、血压、血尿酸(BUA)、肌酸激酶(CK)、血红蛋白(Hb)、乳酸(BLA)、肌酐(Cr)和天冬氨酸转氨酶(AST)测定,并与男飞行学员的测定结果比较.发现男女飞行学员的心电图、心率、血氧饱和度、血压、Cr、CK、BUA和AST均无显著性差异;女飞行学员在高空耐缺氧Hb代偿反应高于男飞行学员(P<0.05),而BLA水平低于男飞行学员(P<0.05).认为中国女飞行学员在生理生化耐受能力上能胜任飞战斗机.     

不同类型高危儿早期干预的临床研究

目的 探索早期干预对窒息、高胆、早产三类高危儿智力发育改善的效果，寻找更合适的早期干预措施。方法 将三类高危儿分为干预组及对照组，同时随机选取正常对照组进行随访。干预组采用鲍秀兰教授“0～3岁”早期干预方案训练，各组均在6个月、1岁时分别采用婴幼儿智能发育量表(CDCC)进行智力发育测评，结果用MDI、PDI表示。结果 (1)6个月龄时MDI各干预组与对照组间有显著性差异，窒息组、早产组与正常组间亦有显著性差异；高胆组与正常组间无差异；PDI窒息组中干预组与对照组之间有显著差异(P＜0．01)，高胆组、早产组均无差异(P＞0．05)。(2)1岁时MDI和PDI结果一致，干预组与对照组间比较窒息组、高胆组有显著差异，早产组无差异；窒息组、高胆组干预组与正常组比较无差异，对照组和早产组与正常组比较均有显著差异(P＜0．01)。(3)所有干预组测评分值均高于对照组，6个月与1岁之间比较有显著差异，各观察组间比较有显著性差异(P＜0．01)。结论 三类高危儿早期干预效果差异较大，干预组均较对照组分值高，早期干预有改善智力发育的作用；三类高危儿中，窒息组、高胆组效果最好，均达到或超过正常水平。所有未干预组均不及正常水平；早期干预对足月高危儿效果显著，对早产儿欠佳，远期效果尚需进一步随访观察。     

"优质服务达标创先"活动体会

为探讨优质为兵服务，促进医院全面建设，本阐述了“开展优质服务达标创先”活动的意义，指明该活动的重点是：加强医德医风建设；坚持依法治医；加强内涵建设，确保合理医疗。提出现阶段应着力抓好以下几个方面工作：坚决纠正乱收费；坚决纠正收取“红包”，礼品,坚决纠正服务作风粗疏。     

依西美坦片在不同介质中的溶出特性

目的:考察新药依西美坦片在3种不同介质中的溶出特性,以研究影响其口服吸收速率的主要因素和规律。方法:建立HPLC法检测其制剂含量和溶出液浓度,色谱柱:HypersilC18(150mm×4.6mm,5μm);流动相:甲醇:0.05mol/LKH2PO4溶液(60:40);检测波长:247nm。溶出介质选用水、0.1mol/L盐酸溶液及0.5%十二烷基硫酸钠溶液,采用转篮法,转速100r/min。结果:依西美坦片在水和0.1mol/L盐酸溶液中的溶出较差,在0.5%十二烷基硫酸钠溶液巾溶出迅速完全,60min时在3种介质中的溶出百分率分别为(60.25±3.76)%、(47.57±1.20)%和(82.24±0.96)%。结论:依西美坦片可能主要在肠道溶出,其溶出速率受介质影响大。     

Comparison of the haemodynamic effects of intermittent positive pressure ventilation with high frequency jet ventilation

The cardiorespiratory effects of intermittent positive pressure ventilation and high frequency jet ventilation with and without positive end expiratory pressure were compared in patients following valvular heart surgery (mitral and/or aortic). Twenty patients received intermittent positive pressure ventilation and high frequency jet ventilation with 0, 0.5 and 1.0 kPa positive end expiratory pressure. High frequency jet ventilation was well tolerated. The addition of 1.0 kPa positive end expiratory pressure was associated with preservation of the arterial oxygen tension without any increase in shunt or significant adverse haemodynamic effect. The results are discussed and compared with a previous study of high frequency jet ventilation following aortocoronary bypass graft surgery.     

高强度聚焦超声及其医学应用

HIFU技术的研究在国内外已掀起了热潮．到目前为止．HIFU技术已得到广泛的实验和临床支持。本文将对HIFU治疗设备的总体结构做一阐述．并讨论其在医学领域中的应用及发展方向。     

Imaging of shifted stimulated echoes and multiple spin echoes

It is shown that a repetitive pulse sequence consisting of two 90° pulses and gradients in a 1:2 ratio around the second 90° pulse generates interscan shifted stimulated echoes (SSTEs) and intrascan multiple spin echoes (MSEs). Separation of these two types of signals is accomplished using specific gradient crusher schemes. The intensity of the SSTEs is an order of magnitude larger than that of the MSEs and determines the signal contrast if both effects are selected simultaneously. The SSTE sequence generates improved contrast between gray and white matter, even at high field, which is explained in terms of increased inverse T₁-weighting for the interscan echo. The MSE image has low signal to noise and no detectable contrast. The effect of interscan diffusion weighting is also discussed.     

Diving physiology and pathophysiology

Summary. Divers have worked at 500 m depth in the sea and have reached 700 m in simulated chamber dives. A prerequisite for this has been extensive physiological studies of the body's reactions to pressure and pressure changes. This paper reviews such physiological and pathophysiological studies with emphasis on recent developments.     

Pharmacokinetics of intravenously administered sodium dichloroacetate in rabbits

ＰｈａｒｍａｃｏｋｉｎｅｔｉｃｓｏｆｉｎｔｒａｖｅｎｏｕｓｌｙａｄｍｉｎｉｓｔｅｒｅｄｓｏｄｉｕｍｄｉｃｈｌｏｒｏａｃｅｔａｔｅｉｎｒａｂｂｉｔｓＧｕＢｉｎ（顾斌）；ＳｏｎｇＬｉｎｇ（宋岭）；ＪｉａｎｇＹｏｎｇｐｅｉ（蒋永培）；ＷｅｎＡｉｄｏｎｇ（文...     

人体中氧氟沙星的立体选择性代谢

５名健康志愿者日服单剂３００ｍｇ氧氟沙星［（±）－Ｏｆ１］后，采用立体选择性的ＲＰ－ＨＰＬＣ手性流动相添加剂法测定尿中Ｓ－（－）－Ｏｆ１和Ｒ－（＋）－Ｏｆ１浓度结果显示Ｏｆ１在人体内呈现立体选择性代谢。尿中排泄的Ｓ－（－）－Ｏｆ１／Ｒ－（＋）－Ｏｆ１之比随时间变化。服药后２ｈＳ／Ｒ是０．８７５，２４ｈ增加到１．１５０．Ｓ－（－）－Ｏｆ１的消除半衰期（ｔ１／２）是４．５７ｈ；消除速率常数（ｋ）是０．１５４ｈ；药时曲线下的面积（ＡＵＣ）为１．１７ｍｇ·ｈ－１．ｍＬ－１；Ｒ－（＋）－Ｏｆ１的ｔ１／２为４．１８ｈ，ｋ为０．１６８ｈ－１，ＡＵＣ是１．７８ｍｇ·ｈ－１·ｍＬ－１；经配对ｔ检验这三对参数间有显著性差异，Ｐ值分别小于０．０１，０．００１和０．００５．因此两对映体在人体内呈现立体选择性处置