不同性别的脑梗死和短暂性脑缺血发作患者血液流变学变化的比较

背景缺血性脑血管病患者常观察到血液流变学参数异常,这种变化虽然不是发生脑梗死的主要原因,但血液流变学改变仍不能忽视.目的研究不同性别脑梗死和短暂性脑缺血发作患者的血液流变学变化,探讨血液流变学指标对疾病的治疗和预后评估的价值.设计以患者和健康人为研究对象,非随机化同期对照研究.单位一所大学医学物理研究所和一所大学医院的神经内科.对象2000-01/12山东大学齐鲁医院神经内科住院的脑梗死患者91例,男64例,女27例,平均年龄(64±9)岁和短暂性脑缺血发作患者40例,男20例,女20例,平均年龄(58±11)岁.同期选择84例健康查体者为对照组,男52例,女32例,平均年龄(56±10)岁.方法晨起空腹采肘静脉血2 mL,肝素抗凝.血液黏度测定用NXE-1锥板式粘度计(中国成都仪器厂生产).主要观察指标不同性别脑梗死、短暂性脑缺血发作患者和对照组的全血高切黏度、全血低切黏度、血浆黏度、血细胞比容、红细胞聚集指数和纤维蛋白原含量.结果男性脑梗死和短暂性脑缺血患者的各项血液流变学指标明显高于对照组,差异有显著性意义(P＜0.05～0.01);女性脑梗死患者的血液流变学各项指标明显高于对照组,差异有显著性意义(P＜0.05～0.01).女性短暂性脑缺血发作组的全血黏度和血浆黏度,纤维蛋白原含量与对照组相比差异有显著性意义(P＜0.05).结论血细胞比容和纤维蛋白原含量的升高是造成血液黏度增高的重要因素.

Comparison of hemorrheologic alterations in patients of different sexes with cerebral infarction and transient ischemic attack

BACKGROUND: Abnormal hemorheologic index was often observed in patients with ischemic cerebrovascular disease. Although this alteration is not the main cause for the onset of cerebral infarction (CI), the changes of hemorrheology should not be ignored.OBJECTIVE: To study the hemorrheologic alterations of patients in different sexes with CI and transient ischemic attack (TIA), and investigate the significance of hemorrheologic index on the treatment of disease and the value of prognostic assessment.DESIGN: Non-randomized controlled and homochronous study based on patients and healthy people.SETTING: Medical physics institute in a university and a neurological department in a university hospital.PARTICIPANTS: Totally 91 CI patients, including 64 males and 27 females with the mean age of (64 ± 9), and 40 TIA patients, including 20 males and 20 females with the mean age of (58 ± 11 ), were selected from the Neurological Department of Qilu Hospital, Shandong University from January to December 2000. Another 84 healthy volunteers, including 52 males and 32 females with the mean age of (56 ± 10), were selected as the control group homochronously.METHODS: 2 mL fasting venous blood from elbow was taken in the morning and heparin was used against coagulation. Blood viscosity was assayed with NXE-1 cone-plate viscometer (made in Chengdu, China).MAIN OUTCOME MEASURES: High blood viscosity, low blood viscosity,plasma viscosity, hematocrit, erythrocyte aggregation index and fibrinogen content of CI or TIA patients in different sexes and the controls.RESULTS: Each item of hemorrheologic index of male CI or TIA patients was significant higher than that of the controls, and the differences were significant (P ＜ 0.05 -0.01 ). Each item of hemorrheologic index of female CI patients was significant higher than that of the controls, and the differences were significant ( P ＜ 0.05 - 0.01). Blood viscosity, plasma viscosity and fibrinogen content of female TIA patients were significant differences from those of the controls ( P ＜ 0.05).CONCLUSION: The increase of hematocrit and fibrinogen content are the main factor causing the increase in blood viscosity.