正常人肺静脉血流与二尖瓣血流的增龄变化

Age-related changes of the pulmonary venous flow pattern and the mitral pattern in normal subjects

目的 :应用经胸多普勒超声心动图 ( TTE)检测正常人肺静脉血流 ( PVFP)及二尖瓣血流 ( MFP)的增龄变化。方法 :选择经全面检查无心脏疾病的 12 0 (男 5 0 ,女 70 )例为研究对象 ,年龄 7～ 80 ( 4 0± 5 )岁。划分为≤ 4 0岁组 (组 )及 >4 0岁组 (组 )。应用 TTE记录 PVFP及 MFP,观察各组 PVFP及 MFP的变化及其关系。结果 :PVFP:S波峰速、SF,A波峰速及时限随年龄增加而增加 ,但 A波时限不超过 MFP A波时限 ,D波峰速随年龄增加而减低 ,二组之间有显著差异性。 MFP:E峰速度、E/ A比值随年龄增加而减低 ,E峰减速时间 ,A峰速度、AFF随年龄增加而增加 ,二组之间有显著差异性。结论 :了解 PVFP和 MFP的增龄变化 ,有助于客观地、全面地评价 PVFP和 MFP的临床价值。

AIM:To compare the changes of the pulmonary venous flow pattern (PVFP) and the mitral flow pattern (MFP) in different age groups and to probe the relationships between PVFP,MFP and age. METHODS:120 normal subjects aged 7 to 80 years (40±5) were studied. Of them 50 were men and 70 were women. The subjects were divided into two grups:≤40 years old and >40 years old. The variables and relationships of the PVFP and the MFP recorded by transthoracic echocardiography were analyzed. RESULTS:The significant difference was found between two groups:The S velocity,SF,PA velocity and duration increased in >40 year group and the D velocity decreased with increasing age in PVFP. The E velocity decreased and the deceleration time of the E wave increased,and the A velocity increased. The E/A ratio decreasd and the AFF increased with increasing age in MFP. CONCLUSION:To understand the age related changes of PVFP and MFP helped to estimate the clinical values of PVFP and MFP.