Jensen Bjarke, Wang Tobias
Department of Biological Sciences, Zoophysiology, Aarhus University, Aarhus C, Denmark.
J Zoo Wildl Med. 2009 Dec;40(4):752-6. doi: 10.1638/2008-0209.1.
Two cases of bifid ventricles and cardiac malformations in juvenile ball python (Python regius) were investigated by blood pressure measurements and macro- and microscopic sectioning. A study of a normal ball python was included for reference. In both cases, all cardiac chambers were enlarged and abnormally shaped. Internal assessment of the ventricles revealed a pronounced defect of the muscular ridge, which normally is responsible for separating the systemic and pulmonary circuits. Consistent with the small muscular ridge, systolic pressures were identical in the pulmonary and systemic arteries, but, the snakes, nevertheless, lived to reach body weights severalfold of their hatchling weight.
通过血压测量以及大体和显微镜切片检查，对两例幼年球蟒（球蟒属）出现的双叶心室和心脏畸形进行了研究。还纳入了对一条正常球蟒的研究作为参考。在这两例中，所有心腔均增大且形状异常。对心室的内部评估显示，肌嵴存在明显缺陷，而肌嵴通常负责分隔体循环和肺循环。与小肌嵴一致的是，肺动脉和体动脉的收缩压相同，不过，这些蛇仍存活至体重达到孵化时体重的数倍。
