Pilomatrix carcinoma. A new case

We present a new case of Pilomatrix Carcinoma after having review the 22 cases previously published. The tumor arisen in a 74 years old male, in the left preauricular region. The lesion was excised with wide margins. A year after there is not any evidence of recurrence or metastases.     

诱发电位连续检测及其在低温心脏直视手术脑干监护中的应用

本文介绍了一种带自适应补偿的维纳滤波算法,和以该算法为基础形成的诱发电位连续监测软件,它作为NDI200型神经诊断仪的一种功能,可连续地记录和分析诱发电位信号,记录一次诱发电位所需的刺激数仅为平时的1/10。该软件配合NDI200神经诊断仪,在低温心脏直视手术脑干听觉诱发电位监护中首先得到了应用。     

红景天提取物的制备及其抗缺氧抗疲劳作用

目的 :探讨红景天对提高缺氧耐力和劳动能力的机理 ,为提高运动能力和在缺氧环境下的工作能力提出防护办法。方法 :对红景天提取物进行初步纯化 ,以小鼠常压缺氧和力竭游泳时间作为耐氧能力和劳动能力指标 ,对动物服药前后的体重变化进行考察。结果 :红景天可明显提高动物的缺氧耐力和劳动能力 ,减轻体重。提示服用红景天可以作为缺氧环境下提高工作能力的有效措施 ,并可作为舰艇长航人员防止体力耐力下降、肥胖人员减肥、轻量级运动员提高运动能力的保健药物。     

新型导弹驱逐舰舱室大气质量卫生学分析与评价

目的 :舰船作战性及居住性的要求及“全封闭”的环境特点 ,使舱室大气质量的卫生学分析与评价迫在眉睫。方法 :在随舰测定基础上 ,以水面舰艇舱室空气组份容许浓度标准为依据 ;应用人 -机 -环境系统工程理论 ,采用对比方法。结果 :分析归纳了舱室大气污染的主要途径及浓度变化规律 ;提出了舱室大气质量控制建议。结论 :该舰舱室大气质量符合标准。     

Simple anthropometric measures identify fasting hyperinsulinemia and clustering of cardiovascular risk factors in Asian Indian adolescents

Correlations of easily measurable parameters of obesity (body mass index [BMI], waist circumference [WC], and subscapular skinfold thickness) with fasting hyperinsulinemia and cardiovascular risk factors (CRFs) have not been investigated in adolescents. We evaluated the screening performance of 3 anthropometric measurements, BMI, WC, and subscapular skinfold thickness, in identifying fasting hyperinsulinemia and clustering of CRFs in 680 male and 521 female adolescents and young adults aged 14 to 18 years in a cross-sectional population survey. CRFs considered were hypercholesterolemia, hypertriglyceridemia, low levels of high-density lipoprotein cholesterol, impaired fasting blood glucose, hypertension, and fasting hyperinsulinemia. The ability of the anthropometric measurements to identify the clustering of CRFs without (cluster 1) and with fasting hyperinsulinemia (cluster 2), and fasting hyperinsulinemia alone was evaluated. BMI, WC, and subscapular skinfold thickness identified the clustering of CRFs and fasting hyperinsulinemia better in males than in females. Among individual risk factors, WC was better in identifying the presence of 3 or more risk factors in cluster 1 for both males and females, and in cluster 2 in females. Subscapular skinfold thickness was better than BMI and WC in identifying hyperinsulinemia in males, and the presence of 3 or more risk factors in cluster 2 in females. All 3 measurements were more accurate in identifying fasting hyperinsulinemia than presence of 3 or more CRFs in either cluster 1 or cluster 2 with higher odds ratio for males. This study shows gender differences in identification of insulin resistance and clustering of CRFs by using simple anthropometric parameters in Asian Indian adolescents. These simple measurements are useful for preventing and predicting cardiovascular risk and for generating a correct definition of the metabolic syndrome.     

仰卧整复手法治疗颈源性头痛的临床观察

为了观察仰卧整复手法治疗颈源性头痛（cervicogenic headache CEH）的临床疗效，将70例颈源性头痛患者随机分为手法组和对照组，分别接受仰卧整复手法和经皮电神经刺激治疗，隔天1次，共2个疗程。比较治疗前2周和治疗后4周的头痛数字评分（NRS）、每周发作次数、头痛持续时间和颈椎活动度（ROM）的差异。结果发现，治疗后手法组的MRS、每周发作次数和头痛持续时间明显下降（P〈0．01）；对照组NRS下降较为明显（P〈0．05），两组的颈椎ROM均无明显变化；手法组治疗有效率为94，5％，明显高于对照组的64．7％（P〈0.05）。提示仰卧整复手法是治疗颈源性头痛的有效手法，其疗效与手法的综合作用有关。     

Importance of measurement site on assessment of lesion-specific ischemia and diagnostic performance by coronary computed tomography Angiography-Derived Fractional Flow Reserve

BackgroundValues of fractional flow reserve (FFR_CT) by coronary computed tomography angiography (CTA) decline from the ostium to the terminal vessel, irrespective of stenosis severity. The purpose of this study is to determine if the site of measurement of FFR_CT impacts assessment of ischemia and its diagnostic performance relative to invasive FFR (FFR_INV).Methods1484 patients underwent FFR_CT; 1910 vessels were stratified by stenosis severity (normal; <25%, 25–50%, 50–70%, and >70% stenosis). The rates of positive FFR_CT (≤0.8) were determined by measuring FFR_CT from the terminal vessel and from distal-to-the-lesion. Reclassification rates from positive to negative FFR_CT were calculated. Diagnostic performance of FFR_CT relative to FFR_INV was evaluated in 182 vessels using linear regression, Bland Altman analysis, and receiver operating characteristic (ROC) curves.ResultsPositive FFR_CT was identified in 24.9% of vessels using terminal vessel FFR_CT and 10.1% using FFR_CT distal-to-the-lesion (p ?< ?0.001). FFR_CT obtained distal-to-the-lesion resulted in reclassification of 59.6% of positive terminal FFR_CT to negative FFR_CT. Relative to FFR_INV, there were improvements in specificity (50% to 86%, p ?< ?0.001), diagnostic accuracy (65% to 88%, p ?< ?0.001), positive predictive value (50% to 78%, p ?< ?0.001), and area-under-the-curve (AUC, 0.83 to 0.91, p ?< ?0.001) when FFR_CT was measured distal-to-the-lesion.ConclusionFFR_CT values from the terminal vessel should not be used to assess lesion-specific ischemia due to high rates of false positive results. FFR_CT measured distal-to-the-lesion improves the diagnostic performance of FFR_CT relative to FFR_INV, ensures that FFR_CT values are due to lesion-specific ischemia, and could reduce the rate of unnecessary invasive procedures.