Bharati S, Lev M, McAllister H A, Kirklin J W
J Thorac Cardiovasc Surg. 1980 Jun;79(6):884-9.
The intermediate type of common atrioventricular (AV) orifice is represented by a spectrum of anomalies lying between persistent ostium primum with cleft aortic leaflet of the mitral valve and the complete form of common AV orifice. This is a study of 81 such hearts. These hearts do not have a distinct cleft in the aortic leaflet of the mitral valve, nor do they have a common valve, as seen in the complete form of common AV orifice. They may or may not have a ventricular septal defect. The surgical importance of the intermediate forms lies in the lack of sufficient valvular tissue on the left side to propertly fashion a mitral valve in many cases (41%).
共同房室口的中间型表现为一系列异常情况，介于永存原发孔伴二尖瓣主动脉瓣叶裂缺与共同房室口的完全型之间。本文对81例此类心脏进行了研究。这些心脏在二尖瓣的主动脉瓣叶上没有明显裂缺，也不像共同房室口完全型那样有一个共同瓣膜。它们可能有或没有室间隔缺损。中间型的手术重要性在于，在许多情况下（41%），左侧缺乏足够的瓣膜组织来恰当地构建二尖瓣。
