Pearlman J D, Triulzi M O, King M E, Abascal V M, Newell J, Weyman A E
Cardiac Unit, Massachusetts General Hospital, Boston 02114.
J Am Coll Cardiol. 1990 Nov;16(5):1168-74. doi: 10.1016/0735-1097(90)90549-5.
Reference values for normal left atrial dimensions have been based primarily on blind M-mode measurements, with no reports based on two-dimensional echocardiography to provide a comprehensive analysis of the two-dimensional measurements from infancy to old age. This report analyzes the left atrial dimensions from two-dimensional echocardiographic studies in 268 normal healthy subjects to determine normal limits and relations among linear, area and volume measurements of the left atrium. The group mean values change with body size, fitting well to the exponential growth model (r = 0.78 to 0.92). The variance about the mean (which determines normal limits) is represented effectively by a quadratic function of body surface area (r = 0.84 to 0.99). The variables determined by this modeling simplify evaluation of normal limits for any body size at any desired level of confidence, and the data are useful reference standards for interpretation of two-dimensional echocardiograms.
正常左心房大小的参考值主要基于盲法M型测量，尚无基于二维超声心动图的报告对从婴儿期到老年期的二维测量进行全面分析。本报告分析了268名正常健康受试者二维超声心动图研究中的左心房大小，以确定左心房线性、面积和容积测量的正常范围及相互关系。组均值随体型变化，与指数生长模型拟合良好（r = 0.78至0.92）。均值的方差（决定正常范围）可有效地由体表面积的二次函数表示（r = 0.84至0.99）。通过该模型确定的变量简化了在任何所需置信水平下对任何体型正常范围的评估，这些数据是解释二维超声心动图的有用参考标准。
