NURS 3590 Study Guide - Midterm Guide: Ductus Venosus, Ductus Arteriosus, Pinard Horn
6 May 2020
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Know genetics and the association of sex-linked carriers vs actual disease carriers. Ductus arteriosus: bypasses the lungs because fetal lungs do not function for respiratory exchange, o2 rich blood from placenta flows rapidly through the umbilical vein into fetal abdomen: 2. Ductus venosus: most of the blood passes through the ductus venosus into the inferior vena cava, here it mixes with deoxygenated blood from fetal legs and abdomen on its way to right atrium: 3. Foramen ovale: bypasses the lung most of the blood passes through the right atrium and through the foramen ovale, opening in left atrium, here it mixes with deoxygenated blood returning from fetal lungs through pulmonary veins. Differentiate between probable, presumptive & positive signs of pregnancy: false-positive pregnancy tests can be caused by pelvic infections and tumors. Doppler ultrasound stethoscope or fetal stethoscope: fetal movements palpated by examiner, fetal movements visible to examiner.
