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Prenatal

Obstetrics

QuestionAnswer
Most common cause of secondary amenorrhea Pregnancy
Nagel’s rule: LMP + 7 days – 3 mo
Gravida-para format (G0P0) G = total PG; P = no. of deliveries; Pabcd: a=term infants, b=premature, c=abortions, d=living kids
prenatal visits: 6-8 wk post LMP; q 4 wk to 28 wks, then q 2 wks to 36 wks, then q wk
fundal height: 12 wks uterus palpable above pubic symphysis; FHT noted w/Doppler (nl 120-160 bpm)
fundal height: 14-16 wks midway btw pubic symphysis & umbilicus
fundal height: 20 wks umbilicus; quickening
fundal height: 20-38 wks fundal ht = gest age (+/- 2 cm)
fundal height: 38-40 wks gravid uterus 2-3 cm below xiphoid
Chadwick sx: bluish or purplish discoloration of vagina/cervix in PG (2/2 congestion of pelvic vasculature)
Hegar sx: softening of the uterine isthmus in PG; by 6-8 weeks, palpable on bimanual exam
Goodell sx: softening of the cervix in PG
Dizygotic twins 1 in 90 PG. Dichorionic (2 placentae) & diamniotic (2 amniotic sacs).
Monozygotic twins 1 in 250 PG. Single ovum fertilized and then splits, most often mono amniotic & monochorionic
Created by: Abarnard
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