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Prenatal
Obstetrics
| Question | Answer |
|---|---|
| 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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