Relias - Fetal Heart Monitoring Questions and Correct Solutions 2024

Relias - Fetal Heart Monitoring Questions and Correct Solutions 2024 uterine blood supply - Answer -- uterine arteries deliver oxygenated blood to spiral arteries which bring oxygen rich blood to intervillous space of placenta that has fetal capillaries - fetal capillaries carry the O2 rich blood to umbilical VEIN that goes to fetus -in contrast, the umbilical ARTERIES return waste products to that intervillous space that go into mother's venous system Potential issues that negatively affect fetal oxygenation - Answer -*Maternal Oxygenation:* asthma, hyper- or hypo- ventilation *Maternal Circulation:* decreased maternal cardiac output, hypotension, decreased Hgb *Placental O2 and CO2 Exchange:* postterm, abruption, HTN, hypotension, uterine tachysystole *Fetal circulation:* cord compression or occlusion Fetal hypoxemia - Answer -- can occur d/t reduced fetal O2 reserves, excessive uterine activity, or reduced uteroplacental blood flow - worsening fetal hypoxemia can lead to abnormal FHR patterns, mostly minimal or absent variability from acidemia (1) hypoxemia vs. (2) hypoxia - Answer -1 - reduce O2 in blood 2 - reduced O2 delivery at tissue levelFetal anaerobic metabolism - Answer -- occurs when long term O2 delivery is insufficient to meet cellular needs of tissues - results in production of lactic acid and other noncarbonic acids - ACIDOSIS is the presence of excessive acids in tissues acidosis - Answer -pH below 7.35 pH is l