placenta structure - membrane weight 1lb
-formation completed at 3 months
-develop cotyledons that act as areas for nourishing fetus
-maternal part beefy red
-fetal part shiny grey
umbilical cord technique - evaluates condition of fetus
-fetal blood can be analyzed at 18 weeks
-evaluate bloo...
-sound waves can stimulate inactive fetus during NST
biophysical profile - tests fetal breathing, body movements, muscle tone, amniotic fluid volume
and heart rate
doppler flow studies - evaluate blood flow in deep vessels
obstetrical pelvis types - 1. gynecoid
-ideal pelvis for vaginal birth
2. anthropoid
-narrow from side to side
3. android
-male pelvis not adequate for vaginal birth
4. platypelloid
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