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20 Cards in this Set

  • Front
  • Back
PREMBRYONIC PERIOD
Def
•THE FIRST 2 WEEKS AFTER CONCEPTION
PREMBRYONIC PERIOD
events
IMPLANTATION
NIDATION
•PROGESTERON & ESTROGEN, hCG
•SITE OF IMPLANTATION IS IMPORTANT
Blastocyst enters the uterus about 4thday after conception
EMBRYONIC PERIOD
Def
•EXTENDS FROM BEGINNING OF 3RDWK. THRU 8THWK. AFTER CONCEPTION.
EMBRYONIC PERIOD
events
•Undifferentated to Differentiated
•VULNERABLE TO TERATOGENS :
Maternal infection
FETAL PERIOD
Def
•9 WKS. AFTER CONCEPTION –ENDS AT BIRTH
Fetal Period Events
•All Major Systems are Present in Basic form and all organ systems will grow & become more refined during this period.
PLACENTA
MAJOR FUNCTIONS
1. Metabolic : Nutrition
2. Transfer : Gas Exchange
Nutrient, Waste, Antibody, Maternal Hormones
3. Antibodies
4. Role of hCG, estrogen,
progesterone
Mechinisms of Implantation
- Enzymes erodemthe decidua
- Chorionic villi extend into the desidua basilis(form fetal side of placenta)
-nutrtitive fluids pases by diffusion
progesterone is poduced by
placenta
GOODELL’S SIGN
CERVIX SOFTENS
PLASMA VOLUME INCREASES:
45% Above Pre-
Pregnancy
To Transport nutrients
needed to meet the
demands of tissue of uterus & breasts
Choloasma
brown pigmant on forhead and cheeks
NAGELE’S RULE
•ESTABLISHES EDC :
•Subtract 3 mo and add 7 days to the 1stday of the last normal menstrual cycle. Correct for the year.
•LNMP: August 30, 2001
•Subtract 3 mo= May 30, 2001
•Add 7 days & change yr= June 6, 2002
ESTROGEN
Stimulates uterine growth & increases blood supply to uterus
Estrogen
CAUSES:
Hyperpigmentation
Vascular changes in skin
Increased activity salivary glands
Hyperemia of gums & nasal mucous membranes
PROGESTERONE
•Maintains endometrium of implantation
•Relaxes smooth muscle of uterus –prevents spontaneous abortion
CONFIRMATION OF PREGNANCY
DX OF PREGNANCY HAS TRADITIONALLY BEEN BASED ON SYMPTOMS EXPERIENCED BY THE WOMAN ANDON SIGNS OBSERVED BY HEALTH CARE PROVIDER
PRESUMPTIVE INDICATIONS
least reliable
Amenorrhea
N/V
Fatigue
•Urinary Frequency
•Breast/Skin Changes
•Vaginal, cervical color change
•Fetal Movement
PROBABLE INDICATIONS
Abdominal
Enlargement
Changes in Cervix:
Color,Consistency
Changes in Uterus
Ballottement
Braxton-Hicks
Contractions
Uterine Souffle
Pregnancy Tests
Accepted
Auscultation of fetal heart sounds
•Fetal Movements felt by examiner
•Visualization of Embryo, or Fetus