Freedom R M, Rowe R D
Cathet Cardiovasc Diagn. 1978;4(4):345-71. doi: 10.1002/ccd.1810040403.
The outlet chamber of the human heart can show considerable variations in its morphology and topography (relationship to main ventricular chamber), and such variations in anatomy and spacial relationship may be predictive of the associated intracardiac anatomy. Although there is considerable debate about whether the position of the outlet chamber is indicative of the type of bulboventricular loop (whether D- or L-), a right-sided and anterior outlet chamber has different implications than a left-sided, superior, and more posterior positioned one. The inflows into the outlet chamber can vary anatomically, and progressive changes in the calibers of these communications can adversely alter the natural history. One or both of the greak vessels, or neither, or a persistent truncus arteriosus can originate from the outlet chamber, and any significant morphological change in the outlet chamber may or may not adversely affect either the pulmonary or systemic blood supply, or both. Finally, any consideration of the outlet chamber raises important conceptual difference in terminologies. At present, there is not unanimity as to what constitutes either an outlet chamber (as compared to a "small right ventricle" in tricuspid atresia) or a single (primitive) ventricle. Any discussion of the morphological and topographical variations of the outlet chamber must be viewed with respect to the terminology employed.
人类心脏的流出腔在形态和局部解剖（与主要心室腔的关系）上可表现出相当大的变异，而这种解剖结构和空间关系的变异可能预示着相关的心内解剖结构。尽管关于流出腔的位置是否表明球室襻的类型（无论是D型还是L型）存在相当大的争议，但右侧和前方的流出腔与左侧、上方且位置更靠后的流出腔具有不同的意义。流入流出腔的结构在解剖学上可能会有所不同，这些通道管径的渐进性变化可能会对自然病程产生不利影响。一根或两根大血管、或者两者都不、或者永存动脉干都可能起源于流出腔，流出腔的任何显著形态变化可能会或可能不会对肺循环或体循环供血，或两者都产生不利影响。最后，对流出腔的任何考量都会引发术语方面重要的概念差异。目前，对于什么构成流出腔（与三尖瓣闭锁中的“小右心室”相比）或单（原始）心室尚无一致意见。关于流出腔形态和局部解剖变异的任何讨论都必须结合所采用的术语来看待。
