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Priciples 2, test 3 OB slides 16-22
weve landed on the moon....
15
Nursing
Graduate
11/24/2009

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Term
the gravid uterus shifts the position of the gastroesophageal junction, predisposing the pt to what 3 things?
Definition
silent regurg, vomiting, and aspiration
(especially under general
Term
intragastric pressures often exceed _______ cmH2O pressure in the last weeks of pregnancy
Definition
40
Term
which hormone does the placenta produce that predisposes the pt to increased gastric acidity and higher volumes?
Definition
gastrin
Term
what increases the incidence of UTI in pregs?
Definition
utereus obstructs ureters
Term
which hormone acts to assist in the intravascular volumeincrease in pregs?
Definition
aldesterone, RBF and GFR also increase
Term
prolongnation of succs is usually not a factor until the post partum period (about 3 days) due to the reduction in what?
Definition
cholinesterase activity
Term
does nitrous oxide synthase activity increase or decrease during pregnancy?
Definition
increase
Term
why might the pregnant person develop gestational diabetes?
Definition
because insulin sensitivity is decreased due to the placenta production of insulinase (which destroys insulin)
Term
which clotting factors increase during pregnancy? and why?
Definition
2 (fibrinogen), 7, 8, and 10, this is to prevent large amounts of blood loss during delivery
Term
the platelet count ___________ in pregs but the ___________ remains intact
Definition
decreases (due to washout), function
Term
track the blood flow from the aorta to the fetus
Definition
aorta-common illiac-hypogastric-uterine artery-spiral arteries-intervillious space-(gas and nutrient exchange)-fetal villi-umbilical vein
Term
how many umbilical arteries are there? and describe the blood they carry
Definition
2, nutrient poor and waste rich
Term
name the three layers seperating the maternal and fetal blood
Definition
trophoblasts-fetal connective tissue-capillary endothelium
Term
what is more of a concern, and Rh neg mother or a Rh positive mother?
Definition
Rh neg due to possible formation of Rh positive antibodies and possible reaction resulting in hydrops fetalis if blood is mixed
Term
how many fingers am i holding up?
Definition
4
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