Observation on Cardiac Opening of the Inferior Vena Cava in Goat Fetuses

• 作者: Jie ZHANG Jinlong ZHANG
• 来源期刊: 农业生物技术:英文版
• 学科: 医学
• 关键词: FETAL CIRCULATION INFERIOR vena cava Foramen ovale Interatrial foramen
• 年，卷（期）: 2019,（6）
• 页码范围: 138-139
• 页数: 2页
• 分类号: R54

摘要

[Objectives] This study was conducted to better understand the characteristics of the fetal blood circulation. [Methods] The cardiac opening of the inferior vena cava was observed in goat fetuses. There are two cardiac openings of the inferior vena cava, namely, the foramen ovale with the valves and the right atrium opening of the inferior vena cava. The blood from the inferior vena cava moves easily into the right atrium via the right atrium opening because the right atrium opening without the valves is located in the lower right of the foramen ovale, and is bigger than the interatrial foramen. [Results] The blood may flow into the left atrium through the foramen ovale when the blood volume into the right atrium exceeds the limit of the right atrium. The fetal inferior vena cava compared with after birth receives oxygenated blood in the umbilical vein from the placenta besides the normal blood. Accordingly the blood volume into the right atrium exceeds the limit of the right atrium. Extra oxygenated blood is diverted directly into the left atrium through the foramen ovale. [Conclusions] This study provides a reference for studying the blood circulation of fetuses and even adults.