Exam 2 Flashcards
Oogenesis
Type of meiosis
Egg/ovum formation
Spermatogenesis
Type of meiosis
Sperm formation
When is an ovum considered fertile (how long)
For 24 hours after ovulation
Capcaitation
Removal of sperms protective coating
Acrosome
Cap on a sperm
Where does fertilization take place
Outer third of the fallopian tube
When does implantation occur
6-10 days after conception
Embryo vs fetus
Embryo before 8 wks
Fetus after 8 wks
How long is pregnancy
280 days after last period
266 days after conception
What marks the first day of pregnancy
First day of missed period
Membranes that surround the embryo
Chorion: Fetal side of placenta
Amnion: Outer portion
Embryonic period
3rd-8th wk after fertilization
Development of organ systems and external features
- Vulnerable to teratogens
Fetal period
Refinement of structure and function
Fetus becomes capable of extrauterine survival
Oligohydramnios
Low amniotic fluid
Less than 300 mL
Polyhydramnios
Excess amniotic fluid
More than 300 mL
ROM
Rupture of membranes
AROM
Artificial rupture of membranes
SROM
Spontaneous rupture of membranes
Wharton’s jelly
Gelatinous substance found in the umbilical cord that protects and insulates it
Yolk sac
Gives oxygen for first 4-5 weeks before placenta takes over
When is placenta done growing
12th week
Hormones that placenta secretes
HCG: Human chorionic gonadotropin (used in urine test)
HPL: Human placental lactogen
Progesterone
Estriol
Progesterone function during pregnancy
Relaxes smooth muscle (no contractions)
When is a fetus viable
Approx:
350-500g
21wks
What closes the shunts in the fetal circulatory system
Pressure from birth
Ductus arteriosis
Between aorta and pulmonary artery, bypasses lungs
Ductus venosus
Shunt in a fetus that allows oxygenated blood to bypass the liver and flow directly to the heart
Foramen ovale
Hole in the heart that allows blood to flow between the left and right atrium
When is surfactant made
36 wks
What are babies given if they are born before 34 wks and haven’t made surfactant
Steroids
When do most body systems develop
4-5 wks
When does fetal reproductive system start developing
7 wks
When does fetus respond to sound
24 wks
Faternal twins
Dizygotic
70% of twins
Identical twins
Monozygotic
0.4%
AMA
Advanced maternal age
35+ yrs
Funic souffle
Sound heard during pregnancy that’s in sync with the fetal heart rate
Caused by blood rushing through the umbilical cord’s arteries and is usually heard during the second trimester of pregnancy
Ballottement
Medical technique used to detect a floating object in a fluid-filled part of the body, such as during pregnancy
Primiparous
“primip”
A woman who has given birth once or is pregnant for the first time
Multiparous
“multip”
one who has given birth twice or more
Operculum
Mucus plug
What causes yeast infection in pregnancy
Lower pH
When does colostrum begin to develop
1st-2nd trimester
Lactogenesis stage 1
First stage of the process of milk production in humans and occurs during the second half of pregnancy
What acid imbalance is common in pregnancy
Respiratory alkalosis
Decreased lung expansion = increased RR, blowing off CO2
What happens to blood volume and cardiac output during pregnancy
Increases
What happens to BP during pregnancy
Stays the same or may decrease due to progesterone
What causes constipation during pregnancy
Progesterone relaxation
What hormone stimulates hyperpigmentation
Melanotropin: anterior pituitary hormone
- Increases during pregnancy
Linea nigra
Dark vertical line that appears on the stomach during pregnancy
Striae gravidarum
Stretch marks
Angiomata
Vascular “spiders”
Visible arterioles
Palmar erythema
Redness on palms
Caused by increased estrogen levels
Pruritus gravidarum
Itching during pregnancy
Presumptive signs of pregnancy
Amenorrhea (no period)
Nausea — with or without vomiting
Breast enlargement and tenderness
Fatigue
Poor sleep
Back pain
Constipation
Food cravings and aversions
Mood changes or “mood swings”
Heartburn
Nasal congestion
Shortness of breath
Lightheadedness
Probable signs of pregnancy
Increased frequency of urination
Soft cervix
Abdominal bloating/enlargement
Mild uterine cramping/discomfort without bleeding
Increased skin pigmentation in the face, stomach, and/or areola
Positive hcg urine or blood test - could be other things
Positive signs of pregnancy
Fetal heartbeat
Visualization of fetus (ultrasound)
First trimester
1-13 wks
Second trimester
14-27 wks
Third trimester
28-40 wks
EDB
Estimated date of birth
EDD
Estimated due date
What is the most accurate assessment of EDB
Ultrasound
When is HIV tested for during pregnancy
1st and 3rd trimester
When is anatomy screening done
18-22 weeks
- Sex of baby is determined
When is Rhogam given
26-30 wks antepartum
72 hours after delivery (if baby is Rh+)
Before blood mixing procedure
When should prenatal care begin
After first missed period
Multiple marker test
Blood test used to assess for Down Syndrome
When is breastfeeding contraindicated?
HIV + status
AMA
Advanced maternal age
During first trimester what is a common change in sexual desire
Decrease due to nausea and fatigue
Examples of operative deliveries
Forcep or vacuum assisted delivery
S/sx for pregnant woman to immediately report to HCP
Vaginal bleeding
Rupture of membranes
Heartburn with severe headache
Woman who gave birth 5 hours ago has saturated pad in 15 mins, what is the nursing intervention
Massage the fundus
Nursing interventions for episiotomy
Perineal ice packs
Sitz bath TID
Stool softener
Nursing intervention for swollen breasts
Ice packs
What causes supine hypotension during pregnancy
Fundus pushing on superior vena cava
When is it most important to get proper nutrients
First trimester
Critical time for embryonic and fetal development
Foods with folic acid
Dark leafy greens
Beans
Peanuts
What can not having enough folic acid in pregnancy lead to
Spina bifida
Caloric changes throughout pregnancy (how many calories in each trimester)
Energy needs increase
1st trimester no change
2nd trimester +340 calories/day
3rd trimester +450 calories/day
Lactation +450-500 calories/day
Normal weight gain
Underweight BMI: under 18.5
+28-40 lbs
Normal BMI: 18.5-24.9
+25-35 lbs
Overweight BMI: 25-29
+15-25 lbs
Obese BMI: over 30
+11-20 lbs
Pattern of weight gain through trimesters
1st trimester: 2-4 lbs
2nd trimester:
Underweight to normal BMI: +1lb/week
Overweight/obese: +0.5lb/week
Macronutrients
Proteins, Fats, Carbohydrates
Protein needs during pregnancy
71g/day
Normal = 46g
Fat needs during pregnancy
Saturated fat: Less that 10% of daily intake
DHA: Good fat, helps with fetal development, omega 3 fatty acid
Carbohydrate needs during pregnancy
175g/day
No more than 45-64% of daily intake
Micronutrients
Fat soluble: ADEK
Water soluble: Folate, Vit B6, Vit B12, Vit C
Vitamin A
Important for development of heart, spine, eyes, and ears
Excess can cause teratogenic effects (heart, lungs, skull, eyes)
Vitamin D
Helps with absorption and metabolism of calcium
Immune function
Comes from milk and sun
Vitamin E
Supplement not recommended during pregnancy
Vitamin K
Helps with clotting
Needed for the synthesis of prothrombin and clotting factors
- Green leafy vegetables
Folate (amount)
Pre-pregnancy: 400mcg
During pregnancy 600mcg/day
Vitamin B12
Important in RBC formation
- Milk, eggs, fortified soymilk
Vitamin B6
Important for RBC, antibody formation, neurotransmitter formation
Vitamin C
Tissue formation and iron absorption
Recommended iron intake during pregnancy
27mg/day
What helps absorb iron specifically
The acidity of Vitamin C
Take on empty stomach
Take with fruit juice
Possible complications from caffeine
Miscarriage
IUGR - intrauterine growth restriction
LBW - low birth weight
Preterm birth
Recommended caffeine intake during pregnancy
No more than 200mg/day
Possible complications of artificial sweeteners
Metabolic dysregulation
What is the concern with Pica
Eating ice or dirt may mean anemia
Deficiencies common in vegans
Iron, zinc, Vitamin D, Vitamin E, Vitamin B12, calcium
Deficiencies common in gluten free diet
Folate (B9), thymine, niacin, riboflavin, iron
What measurements are important to get during pregnancy
Height and weight for BMI
What lab tests are important to check during pregnancy
Hematocrit or Hemoglobin to check for anemia
Concern with pregnancy after bariatric surgery
Proper nutrient intake
Supplement with vitamins