Late FHR decelerations are caused by:
1. altered cerebral blood flow.
2. umbilical cord compression.
3. uteroplacental insufficiency.
4. meconium fluid.
3
1. Incorrect. Altered fetal cerebral blood flow results in early decelerations in the FHR.
2. Incorrect. Umbilical cord compression results in variable decelerations of the FHR.
3. Correct. Uteroplacental insufficiency results in late decelerations in the FHR.
4. Incorrect. Meconium-stained fluid may or may not result in fetal heart rate changes, de-pending on the gestational age of the fetus and the presence of other causative factors asso-ciated with fetal distress.
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