Parturition and Labor Part 1 Flashcards
effect of Human chorionic gonadotropin (HCG) on pregnancy
stimulates corpus luteum to produce progesterone
maintains pregnancy
stimulates ovaries to produce elevated estrogen and progesterone till 1st trimester
HCG is produced by _____
syncytiotrophoblast
covering of ovary
corpus luteum
effect of thyroid releasing hormone (TRH) on pregnancy
placenta release TRH = inc TSH and prolactin
purpose of thyroid hormone
brain development and thyroid function of growing fetus
purpose of prolactin
breast tissue development and milk production
hormone found in corpus luteum and placenta in pregnant women
relaxin
purpose of relaxin
softens birth canal, connective tissue remodeling, mammary growth
inhibits uterine contractions
systemic vasodilation to dec BP during pregnancy
effects of pregnancy to CV system
inc HR, SV and CO, ventricular wll mass, myocardial contractility, cardiac compliance
dev vascular resistance = dec BP
comapre cardiac output during pregnancy and after
during: inc to direct blood to uterus, placenta, kidneys, skin and ex
after: d/t decompression of inferior vena cava - inc 75%
effects of pregnancy to respi system
d/t enlarging uterus: dec in FRC, ERV and inc in IRV
d/t inc progesterone: inc tidal volume
VC and RR are unchanged
O2 dissociation curve shifts to the right to favor transfer of O2 to placenta
effects of pregnancy to hematologic system
inc RBC mass and BF to uterus
inc demand of iron: 3-7.5 mg/day in 3rd trim
hypercoaguable d/t estrogen = 5x prone to DVT
effects of pregnancy to renal system
dec serum concentration of uric acid, creatinine and urea
fluid retention = edema and hydronephrosis (enlarged kidneys)
progesterone and relaxin dilates urinary collecting system = urinary stasis = UTI
effects of pregnancy to GI system
GERD: progesterone relaxes LES = acidity goes up
- delayed gastric emptying
- inc small bowel transit time
- compression from uterus
treatment for GERD in pregnant women
preggy: slanted pos
normal: upright pos
