Abstract: Extract Fetal circulation in utero Oxygen and nutrients are brought to the placenta by the maternal uteroplacental circulation, with delivery to the fetus by the separate fetoplacental circulation. Uteroplacental circulation ... Umbilical circulation ... Physiological changes to fetal circulation at delivery At birth, a rapid sequence of cardiovascular and respiratory events occur to enable the newborn to switch from placenta to lungs for effective gaseous exchange. This sequence results in the transition from a fetal to an adult pattern of circulation. Physiological remnants of the fetal circulation ... Fetal haemoglobin The partial pressure of oxygen within the umbilical vein at term is between 30 and 40mmHg. To meet its tissue oxygen requirements at this relatively low pO2, the fetus has made adaptations to hypoxia. ... Assessment of fetal well-being during pregnancy Obstetric patients are risk stratified at booking into two main groups: ... Fetal growth
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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