pregnancy changes and fetus development

antepartum

40 weeks of pregnancy

intrapartum

labor

post partum

after the placenta is delivered

conception

union of egg and sperm

fertilization

sperm penetrates membrane of the egg

implantation

6-8 days after fertilization when the cell implants to the endometrial lining

baby grows where during pregnancy

uterus

what happens when during the zygote phase

cell division, new DNA, begins the formation of a baby

hormone secreted by the zygote

human chorionic gonadotropin

what can happen with zygote implantation

light bleeding

hCG is produced by

developing embryo and placenta

hCG stimulates the

corpus lute to continue hormone production; its the pregnancy test hormone

estrogen and progesterone are produced by

corpus lute until 10 weeks then the placenta

estrogen is made by

ovaries

estrogen roles

stimulates uterus growth, increases breast development, hyperpigmentation

progesterone roles

maintains uterus lining, aides breast development, relaxes GI and uterine muscle

major hormone in pregnancy

progesterone

teratogen

substance that has the potential to cause defect to unborn child

hyperthermia is considered a

teratogen

types of infectious teratogen

rubella, cytomegalobiurs, varicella, herpes simplex, toxoplasma, syphilis

types of chemical teratogen

alcohol, a lot of drugs, mercury, lead, nicotine

biggest concept about medicaitons

benefits of mother must outweigh risk to fetus

concept of pre existing meds

continue, discontinue, charge to another, evaluate dose; can only take med if clearly indicated safe