维普考试服务平台

单选题男，40岁，反复发生劳累后心前区闷痛、气短.体检发现心界向左下扩大，胸骨左缘下端可听到粗糙响亮的收缩期喷射性杂音伴震颤，心电图示Ⅱ，Ⅲ，avF有病理性Q波，超声心动图发现，二尖瓣前叶收缩期突向室间隔.考虑其诊断最可能为肥厚型梗阻性心肌病，他的胸骨左缘收缩期杂音的强度改变哪项是正确的? A、含硝酸甘油后减轻 B、含硝酸甘油后增强 C、用西地兰后减轻 D、用异丙基肾上腺素后减轻 E、用去甲肾上腺素后增强

进入题库练习

单选题高血压病合并糖尿病，BP180／100mmHg，心率65次／分，尿蛋白(+)，血肌酐正常，选用下列哪类药物降压最合适

进入题库练习

单选题硅肺的特征性病变是A．类上皮肉芽肿B．胸膜呈斑状增厚C．硅肺空洞D．硅结节E．肺间质纤维化

进入题库练习

单选题男性，20岁，因尿少，浮肿伴腹胀四十余天入院。查体:BP15/11.5kPa(112/84mmHg)，全身高度浮肿，腹水征(+)，尿蛋白++++，镜检WBC0.3/HPF，RBC偶见，尿蛋白定量30g/24小时，呈选择性蛋白尿，Bun6.2mmol/L，Cr84μmol/L，血胆固醇12mmol/L，甘油三酯3.8mmol/L，估计病人的预后可能: A、用糖皮质激素正规治疗6～8周后病情可能缓解 B、尽管经积极适宜的治疗，病情仍趋迅速恶化的可能大 C、半年内必将需依赖血液透析或腹膜透析维持生存 D、糖皮质激素+环磷酰胺才能控制病情 E、不经替代治疗一年内必将死于尿毒症

进入题库练习

单选题哪一种糖皮质激素通过胎盘时不能被灭活： A、地塞米松 B、氢化可的松 C、泼尼松 D、可的松 E、甲泼尼龙

进入题库练习

单选题关于风湿性疾病的临床特点，错误的是

进入题库练习

单选题Banish soft drinks from school vending machines. Cut down on Happy Meals. Load school lunches with fruits and vegetables. Pull the plug on the television and shove kids outdoors. Those are some of the weapons that schools, doctors and parents wield to prevent overweight kids from packing on more pounds. But there's another possibility: Surgically implant an inflatable silicone band around the top of the stomach to restrict food intake. That way, people eat smaller meals. Banding works for many adults. Now Allergan Inc. , a maker of the band, is asking the Food and Drug Administration to approve its device for morbidly obese adolescents as young as 14. You may or may not find this hard to stomach. We suspect your response will depend on your view of the causes of obesity, teen and otherwise. If you think losing weight is only a matter of will power, then you probably will figure this is another stab at a quick-fix that can't work for long. But here's why we can't dismiss it. Chicago is a national epicenter for childhood obesity. From toddlers to teens, Chicago's children far exceed national averages for obesity. An obese teen faces a lifetime of increased health risks. The band surgery wouldn't be for the girl who wants to shed 25 pounds to fit into a dancing party dress. This would be for the morbidly obese—adolescents 100 pounds or more overweight. The surgery is safe and effective for adults. In limited trials, it has helped obese teens. A 2010 study in the Journal of the American Medical Association found banding surgery to be far more effective than diet and exercise programs in helping teens shed significant poundage. Of 25 patients who got the surgery, 21 lost more than half their excess weight. By contrast, only three of 25 teens on a supervised dieting and exercise program lost that much weight. The prospect of such surgery on a teen should give pause to parents and doctors. But let's remember that this is envisioned as a last resort for teens who are 100 pounds or more overweight. Before they're cleared for surgery, kids would have to show they diligently tried other weight loss methods. That they could stabilize their weight in preparation for surgery. And that they're ready to follow through with psychological counseling and other after-surgery programs. Parents and kids need to know: There is no quick, pain-free way around diet and exercise as a weight control. Pills, gastric surgery and other shortcuts may help some for a while. But even surgery likely won't be effective for long if you don't change the way you think about food and about controlling portions. Yes, we share concerns that once doctors start ratcheting up the numbers of these surgeries, they won't stop at the small numbers of extremely overweight teens. But that's for doctors and parents to monitor. The FDA should allow the band to be marketed for adolescents, to give them a chance at a normal, healthy life.

进入题库练习

单选题下列关于心力衰竭的实验室检查正确的是

进入题库练习

单选题下列哪项不符合由促胃液素瘤引起的消化性溃疡A．多发生在球后十二指肠降段和横段，或空肠近端B．常规胃手术后不易复发C．易并发出血、穿孔和梗阻D．基础胃酸分泌过度E．常伴腹泻

进入题库练习

单选题男，30岁，因发热，胸痛，咳嗽，发现左侧胸腔积液3天，ESR56mm／h，胸腔穿刺及胸腔活检已确诊结核性胸膜炎;

进入题库练习

单选题支气管扩张症的主要治疗是

进入题库练习

单选题形成早期细胞性硅结节的细胞主要是( )(2011年)

进入题库练习

上一页 1…281 282 283 284285286 287 288 289…312 下一页