The interatrial communication, one of the most frequent congenital heart defects, represents an important intracardiac shunt between systemic and pulmonary circulations. Direction and magnitude of the interatrial shunting depends upon several features, including defect size, shape and location, pressure difference between right and left atrium, and difference in right and left ventricular compliance.

中文翻译：

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先天性心脏缺陷心房通讯的现代进展

心房交流是最常见的先天性心脏缺陷之一，代表了体循环和肺循环之间重要的心内分流。心房分流的方向和大小取决于几个特征，包括缺损大小、形状和位置、左右心房之间的压力差以及左右心室顺应性的差异。