Hofstetter R, Mayr A, von Bernuth G
Br Heart J. 1982 Dec;48(6):525-8. doi: 10.1136/hrt.48.6.525.
There are few echocardiographic studies which examine ventricular cavity and wall dimensions as well as ventricular function in normal newborn infants. We investigated the M-mode echocardiograms of 60 normal newborn infants aged 3 to 6 days using computer analysis. Using the same method, we examined in addition left ventricular cavity dimensions and contractility variables of 15 healthy newborn infants sequentially during the first hour of life. The left and right ventricular diameters, their systolic shortening fraction and maximal rate of change, as well as the thickness of the interventricular septum and the left ventricular posterior wall were found to be comparable to previously published values. In addition, we found that the left ventricular end-diastolic diameter and the systolic shortening fraction of the left ventricular diameter increase significantly during the first hour of life. This increase is probably because of the postnatal increase in left ventricular volume and pressure work.
很少有超声心动图研究检测正常新生儿的心室腔和室壁尺寸以及心室功能。我们使用计算机分析研究了60名3至6日龄正常新生儿的M型超声心动图。使用相同方法，我们还在出生后第一小时内对15名健康新生儿的左心室腔尺寸和收缩性变量进行了连续检测。发现左、右心室直径、它们的收缩期缩短分数和最大变化率，以及室间隔厚度和左心室后壁厚度与先前发表的值相当。此外，我们发现左心室舒张末期直径和左心室直径的收缩期缩短分数在出生后第一小时内显著增加。这种增加可能是由于出生后左心室容量和压力负荷的增加。
