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目的 :探讨风湿性二尖瓣狭窄患者左心房内自回声现象 (SEC)与左心房血液流变学特点的关系。方法 :74例风湿性二尖瓣狭窄患者于经皮球囊二尖瓣成形术前采用彩色多普勒成像仪行食道超声检查 ,术中自左心房取血液标本进行血液流变学检查。结果 :74例患者中 ,发现SEC 2 4例(发现率 32 .4% )。SEC组HCT、ηp、ηb、IRCA、TK均高于无SEC组 (P <0 .0 5或 0 .0 1)。结论 :提示风湿性二尖瓣狭窄患者左心房内血液流变学异常可能是SEC形成的原因之一。
Objective: To investigate the relationship between left atrial self-echo (SEC) and left atrial hemorheology in patients with rheumatic mitral stenosis. Methods: Totally 74 patients with rheumatic mitral stenosis underwent percutaneous balloon mitral valvuloplasty with color Doppler echocardiography before esophagectomy. Blood samples were taken from the left atrium for hemorheology during operation. Results: Of the 74 patients, SEC 2 was found (a finding of 32.4%). HCT, ηp, ηb, IRCA and TK in the SEC group were higher than those in the non-SEC group (P <0.05 or 0.01). CONCLUSIONS: It is suggested that abnormal left ventricular blood rheology in patients with rheumatic mitral stenosis may be one of the reasons for the formation of SEC.