Conception/ Genetics Flashcards Preview

NUR 359: OB > Conception/ Genetics > Flashcards

Flashcards in Conception/ Genetics Deck (41):
1

what is TTC

trying to conceive

2

importance of genetics to fertility

- provides tools to determine heredity component of many disease
-improves ability to predict:
susceptibility
onset
progression
response
to tx
- earlier dx
-ppl who would have previously died in childhood to survive into adulthood

3

genetic testing of in vitro embryos

-testing done after the embryo cells (4-6 cell blastocyte) have fertilized and split in petri dish
- one cell can be tested for genetic diseases
- if (+), they dont use the embryo
-if (-), they use the embryo

4

how much does each in vitro tx usually cost

40k

5

def genomics

- tailoring meds to each pt based on genetics

6

disorders that are more susceptible in certain ethnic groups

tay sachs
thalasemias
PKU
CF

7

nursing role during genetics testing

- collect, report, and record genetics info
-prenatal screening and testing
- offer info and resources
- informed consent
-care/counseling of families who have lost a child to a genetic condition
-collect fam hx
-referral for specialized services

8

a miscarriage in the 1st trimester is usually due to

chromosomal abnormalities

9

chromosomal abnormalities are a major cause of

reproductive loss
congenital problems
gyn disorders

10

abnormalities of chromosome structure

translocation
deletions
inversions

11

def unifactorial chromosomal abnormality

- a single gene controlling a trait, disorder, or defect

12

what kind of chromosomal abnormality is more common: unifactorial or multifactorial

unifactorial

13

what is the most common genetic malfx

multifactorial

14

what birth defects are a result of multifactorial genetic malfx

cleft lip/palate
neural tube defects
congenital heart disease
pyloric stenosis

15

what is the avg age of 1st menses

13 years old

16

why is the avg age of menses decreasing

environment and food

17

what is the avg # of days that women bleed for during their period

5 days

18

what is the usual amt of blood loss during a period

50 cc

19

phases of the ovarian cycle

follicular phase
ovulation
luteal phase

20

what is the job of FSH

causes follicle to grow and be released

21

a maternal egg is only viable for

24 hrs

22

sperm is viable for

up to 72 hrs

23

male sperm

swim faster but die quicker

24

female sperm

swim slower but last longer

25

LH level before ovulation

released/peaks right before ovulation (24 hrs)

26

FSH level before ovulation

incr allows egg to grow and be released

27

FSH level after ovulation

dramatically drops

28

estrogen level before ovulation

rises until ovulation

29

estrogen level following ovulation

- drops if not pregnant--> back to menstual phase
- remains stable/incr if pregnant

30

def corpus luteum

the empty follicle

31

def luteal cyst

an empty follicle fills up with fluid and becomes a cyst

32

what increases the risk of developing luteal cyst?

IUD's

33

phases of the menstrual cycle

menstruation
proliferative
secretory

34

what occurs during menstruation phase

shedding of the endometrial lining
gradual incr of estrogen and progesterone

35

what occurs during the proliferative phase

-decr in estrogen right before ovulation
-follicles start developing

36

approx what day does ovulation occur

day 14

37

if pregnancy occurs, progesterone will remain high or drop?

remain high

38

def oogenesis

process that produces the female gamete (ovum)

39

how many chromosomes does a gamete contain

23

40

def spermatogenesis

process that produces the male gamete (sperm)

41

how many sperm are there in a single ejac?

200-500 mill