【摘要】 目的研究胚胎及胎儿发育不同时期心脏、大血管及肺的变化并找出其潜在规律。为临床评估胎儿心血管及呼吸系统的发育状况及预测其发育异常提供理论依据。方法收集不同孕周的胚胎及胎儿共167例,测定135例孕12-36周的胎儿心脏、大动脉及肺的正常发育值,推测其发育规律。并通过组织胚胎学方法对胚胎及胎儿心脏组织发生进行研究。结果心脏、大动脉的生长发育遵循一般型模式。心脏重量增加最为明显。胎龄3个月时肺动脉粗于主动脉,到9个月胎龄时主动脉的外径超过肺动脉。组织胚胎学研究表明,在胚胎30天时心脏已据基本雏形。妊娠7个月后的心脏组织学特征同成人相似。胎肺各轴线和重量从3-9个月胎龄基本呈匀速发育。结论心脏的较快发育期在妊娠7个月之前。胎肺在整个孕期呈匀速发育。更多还原

【Abstract】 Objective To investigate the development of heart、lung and main artery during the different fetal period and find out their latent law.Providing the reference to appraisal developmental state of fetal cardiovascular and respiratory system,and predict dysplasia.Methods To collect 167 fetus in different gestational weeks.135 fetus during 12-36 gestational weeks were measured and analyzed,including three diamensions diameters and weight of heart and lung,external diameter of main artery.To observe the growth of embryon heart by histological method.Results The development of heart and main artery is common mode.The change of heart weight is obviously.The external diameter of pulmonary artery is bigger than aorta in 3 gestational month,but reverse in 9 gestational month.In 30 gestational days the basic form of heart is found by histological method.The histological character of fetal heart is similar to adult in 7 gestational month.The development of three diamensions diameters and weight of lung is steady from 3 to 9 gestational month.Conclusion The faster growth phase of fetal heart is before 7 gestational month.During the whole foetal period,development of lung is steady.更多还原