Heart Model与左心声学造影测量左心室收缩功能的对照研究

Control study of left ventricular systolic function measured by Heart Model and left ventricle opacification

目的对比分析Heart Model(HM)与左心声学造影(LVO)在测量左心室收缩功能中的应用,以评估HM的临床应用价值。方法收集68例患者利用HM与LVO测量的左室舒张末期容积(EDV)、左室收缩末期容积(ESV)及射血分数(EF)数据结果,采用配对t检验方法比较两种方法的测量结果是否存在统计学差异。结果两种方法测量的EDV及EF差异有统计学意义(P<0.05),测量的ESV差异无统计学意义(p>0.05)。EDV在140~180ml及EF>40%时,两种方法测量结果差异无统计学意义,而在其余范围内差异有统计学意义。结论 HM能够比较准确的测量左室收缩功能,但是在EF≤40%和/或EDV>190ml或<140ml时测量结果存在一定误差。

Objective to compare and analyze the application of Heart Model（HM）and left ventricle opacification（LVO）in the measurement of left ventricular systolic function,so as to evaluate the clinical value of HM.Methods The data of EDV,ESV and EF measured by HM and LVO were collected from 68 patients.Then the paired t test was used to compare the difference between the two methods.Results The differences of EDV and EF measured by the two methods were statistically significant different（p〈0.05）.There was no significant difference in the measurement of ESV（P〉0.05）.There was a certain difference in the results of the two methods,when EDV was 140-180 ml and EF is greater than 40%.Conclusion HM can measure the left ventricular systolic function accurately,but when EF ≤ 40% and（or）EDV 〉 190 ml,there are some discrepancies in results.