The results showed that transverse diameter. longitudinal diameter of the heart. cardiacarea and cardio- thoracic ratio decreased markedly after labor(P<0.01 ).
结果：心脏横径、心脏长径、心脏面积、心胸比率较初入高原时显著缩小（P＜0．01）；
2
Cardiac pain is transmitted to the cerebral cortex along autonomic nerve fibers and has a variable referral area that can extend from the ear to the umbilicus.
心脏性疼痛沿着自主神经纤维传到大脑皮层，其范围可自耳部延伸至脐部。
3
The research about cardiac myocytes renewal is a hot topic in cardiovascular area.