Physiology Of Pregnancy Flashcards
Amniotic fluid in second semester?
For fetal urine
Which hormone is released from corpus luteum then by placenta?
HCG- peaks in first days to weeks, double in number every 24 hours
Spike of HCG at what week?
9week mark
Progesterone maintains what?
Quiescence, not allowing contraction
What is HCG created by?
Trophoblast
What alters maternal carbohydrate and lipid metabolism to provide steady state of glucose for feotus?
Human placental lactogen
What induces maternal insulin resistance?
Human placental gonadotrophin
Alpha unit of HCG mimics what?
FSH, LH, TSH
High HCG may indicate?
Multiple preganancy or molar preganancy
For pregnancy testing what do we check for?
Beta unit of HCG
Problem of progestrone smooth muscle relaxtation?
Laxity in ligaments of pelvis, supra-pubic dysfunction, gastric reflux and constipation, lobule-alveolar development in breasts
May need crutches, a belt or exercises
What is progesterone responsible for in breasts?
Lobulo alveolar development
Plasma volume increase?
40% from 2.5l to 3.7l
Red blood cell increase by what percent?
25%, leads to dilutional anaemia
Whta happens to colloid osmotic pressure?
Falls, causing shift of fluid into extracellular fluid, fluid in hands and feet
Womans Heart enlarges by how much?
12%
Innocent systolic murmurs are common at what percent?
90
Preipheral resistance decreases by?
35%, peripheral vasodilatation due to progesterone
What happens to respiratory in pregnancy?
Resp rate increases, bronchodilation, rib cage increases, change in tidal volume
What is causing palpitations?
Increase HR
Pre-eclampsia causes?
Significant odema, swelling in face
Renal flow is increased by?
50%, kidney length by 1cm increased
Levels of thyroid changes?
Increase in T3/T4, thyroid binding globulin due to oestrogen
What happens to bhcg in pregnancy?
Dramatic rise in first days-weeks, released by corpus luteum then by placenta.
