Hirvonen L, Timisjärvi J, Peltonen T
Med Biol. 1979 Oct;57(5):352-6.
Haemodynamics of two reindeer (18 h and 4 days old) and one elk (1 week old) calves were studied by catheterization and angiography. Early closure of foetal shunts, high cardiac output and large ejection fractions were observed in all three animals. Pulmonary arterial blood pressure decreased to the full-grown level during the first days of life in the reindeer. Electrocardiography showed cranial-orientated QRS vector in both species. The cardiovascular system of the Cervidae is well developed at birth and adapts rapidly during the neonatal period.
通过导管插入术和血管造影术研究了两只驯鹿（18小时和4天大）和一只麋鹿（1周大）幼崽的血液动力学。在所有三只动物中均观察到胎儿分流的早期关闭、高心输出量和大射血分数。驯鹿出生后的头几天，肺动脉血压降至成年水平。心电图显示两个物种的QRS向量均朝向头侧。鹿科动物的心血管系统在出生时发育良好，并在新生儿期迅速适应。
