西咪替丁对林可霉素生物利用度的影响

通过8名健康志愿者服药后的对照实验,用微生物法检测血药浓度,按一室模型配置求算药物动力学参数,探讨西咪替丁对林可霉素体内过程的影响。结果表明,西咪替丁不能改变林可霉素的吸收速率(Ka)和消除速率(Ke),但可通过增加其吸收程度或改变其分布容积,使林可霉素的血药浓度和生物利用度分别增加约19％和27％。     

心房充血分数评价高血压患者左室舒张功能的临床研究

目的探讨心房充血分数(AFF)在评价高血压患者左室舒张功能方面的临床应用价值。方法应用声学定量技术(AQ)对40名高血压患者及40名正常人的AAF值,快充血率峰值(PRFR)进行测定,并兼测了二尖瓣口E峰峰值速度与A峰峰值速度比(EV/AV)。结果高血压患者的AFF值明显高于正常人(P<0·001);而PRFR、EV/AV值明显低于正常人(P<0·001~P<0·05)。且所有受试者的AFF值与EV/AV值、PRFR值分别呈负相关(r=-0·51;r=-0·61)。结论AFF能够客观的反映高血压患者的左室舒张功能变化,对鉴别左室舒张功能异常有一定的诊断意义。     

综合疗法治疗乳腺增生62例

我科于2005年6月～2006年12月用乳癖消结合逍遥丸内服、耳穴埋压治疗乳腺增生62例，获得满意疗效，现介绍如下。     

口腔鳞状细胞癌颈淋巴转移范围和临床病理因素间的相关性研究

目的探讨口腔鳞状细胞癌颈淋巴转移范围和临床病理因素间的关系。方法对26例已存在颈淋巴转移的原发口腔癌患者，进行颈淋巴转移范围和患者的临床病理资料的统计分析，寻找影响转移范围的主要因素。结果单因素分析发现，肿瘤生长方式和分化程度与转移范围相关。多因素分析显示，肿瘤生长方式(浸润型)和肿瘤转移范围相关。结论对颈淋巴已有转移的口腔癌患者，若原发灶为浸润性生长，肿瘤倾向于更大范围的转移。对已有颈淋巴转移的口腔癌患者，颈淋巴清扫术范围的制定，主要考虑肿瘤生长方式，适当考虑肿瘤发病部位、厚度、大小和细胞的分化程度，可以不考虑患者年龄和性别。     

入世的平和——托马斯博士与庄子

“天地与我并生，而万物与我为一”，以客观的说法来看，恰恰是一种朴素的唯物主义，即融入人类所生存的自然环境，以天地万物的本相和规则去生活，不是一味强调征服和超越。     

用视诱发电位和富里叶变换作视力客观估计

目的:研究用图形视觉诱发电位(PVEP)和离散富里叶变换(DFT)作视力客观估计的方法。方法:检测对象为33只正常眼。用翻转频率为10次/秒,条纹张角分别为30、20、18、12、10、6、4和2弧分的垂直方波光栅图形刺激,记录相应的稳态图形视诱发电位。用离散富里叶交换提取WEP频谱中10Hz成分的幅值。以光栅条纹张角为横坐标、相应的VEP频谱幅值为纵坐标作关系曲线,取阈值附近的近似线性部分的数据点作直线回归,用外推法求得阈值和视力。结果:比较VEP所测之视力与用国际标准视力表所测之视力,可见在本研究中70％的受检眼VEP视力估计较准确。结论:用本研究中的VEP技术客观地测量视力可靠性较高。眼科学报1997;13:59～61。     

Application of technetium-99m hexamethylpropylene amine oxime single-photon emission tomography to neurologic prognosis in patients undergoing urgent carotid surgery

In this study we aimed to work out a quantitative prognostic index for preoperative assessment of brain technetium-99m hexamethylpropylene amine oxime (HMPAO) single-photon emission tomography (SPET) in patients referred for urgent carotid endarterectomy due to acute obstructive disease of the internal carotid artery (ICA) and neurological deficit. To this end we compared data from preoperative SPET studies with the postinterventional changes in neurological status in 20 patients (17 males, three females; mean age 53 years, SD 4 years) with acute ischaemic cerebral disorders induced by obstruction of the ICA. Carotid obstruction was diagnosed by ultrasound B-mode study. All patients underwent urgent carotid endarterectomy from the ICA. Patients were divided into two groups in accordance with the results of postoperative follow-up: group A comprised patients with significant (more than 3 points) postoperative improvement in neurological condition as quantified by the Canadian Neurological Scale (11 patients); group B consisted of patients with minimal improvement or deterioration (nine, three of whom died). All patients were studied preoperatively by^99mTc-HMPAO SPET. The volume of nonperfused tissue (VS, cm³) was quantified using the Mountz technique. Hypoperfused volume (V _hypoperf, cm³) in the affected hemisphere was calculated as the total volume of voxels with^99mTc-HMPAO uptake <90% of the contralateral symmetric voxels. Discriminant prognostic function was calculated by discriminant analysis as:PF = 0.072×VS + 29.46×(VS/V _hypoperf). Patients with preoperativePF values <8.20 demonstrated postoperative improvement in neurological status, while the group withPF>8.90 comprised patients who demonstrated minimal improvement or deterioration. PF values in the range 8.20–8.90 carried an indefinite prognosis. We conclude that the preoperative^99mTc-HMPAO SPET can be used for the selection of patients in whom improvement in neurological status may be expected after urgent surgical correction of acute extracranial obstruction of the ICA.