Normal pregnancy/L&D Flashcards
pregnancy: normal cardiovascular changes
incr cardiac output 50% HOTN supine, dizziness incr pulse 10-18 incr S2 split (inspiration) JVD systolic ejection murmur S3 gallop
BP should be normal, diastolic murmur NOT normal
pregnancy: NOT normal cardiovascular changes
diastolic murmur
BP should be normal
pregnancy: normal pulm changes
incr O2 demand
compensated resp alkalosis (incr ventilation)
dyspnea
mucosal hyperemia (congestion, rhinorrhea)
pregnancy: normal heme changes
incr plasma vol, RBC vol, coag factors
edema
physiologic anemia
leukocytosis
incr Fe needs (supplement 300 mg elemental Fe/day)
thromboembolism risk 2x (5.5x puerperium)
incr fibrinogen, FDP, 7, 8, 9, 10
pregnancy: normal renal changes
incr PVR incr bladder tone (progesterone) decr bladder capacity incr RAA components urinary frequency stress incontinence nocturia
decr Cr, BUN
incr GFR
glucosuria NORMAL
(NOT normal: proteinuria)
pregnancy: normal GI changes
progesterone= smooth muscle relax
decr LES: GERD
decr GI motility: constipation
decr GB: stones
morning sickness, N/V- first 4-8 wks pruritis (incr bile acid conc) diet cravings pica (no anemia?) ptyalism (excess salivation, can't swallow b/c N) olfactory aversions
ALP doubles NORMAL
incr lipids
ACEI category
D, contraindicated in preg
pregnancy: normal endocrine changes
thyroid enlarges
euthyroid
incr cortisol
incr aldosterone
incr hPL (human placental lactogen)
postprandial hyperglycemia
fasting hypoglycemia
incr insulin resistance
pregnancy: normal MSK changes
lumbar lordosis
back pain
imbalance (progesterone= ligament laxity)
pregnancy: normal skin changes
spider angiomas palmar erythema striae gravidarum **linea alba--> linea nigra **chloasma/melasma (mask of pregnancy) hair falling out postpartum
pregnancy: normal breast changes
enlarge incr areola prominent montgomery glands colostrum (for 2 wks) **breast tenderness
pregnancy: normal ophthalmic changes
blurred vision (6-8 wks postpartum gone)
Chadwick’s sign
bluish vagina & cervix
pregnancy sign
Hagar’s sign
softening of cervix (b/t fundus & cervix)
pregnancy sign
quickening: nullipara
18-20 wks
quickening: multipara
14-16 wks
uterine growth: 12 wks
at symphysis pubis
fetal heart tones noted
uterine growth: 14-16 wks
midway b/t pubis & umbilicus
uterine growth: 20 wks
at umbilicus
quickening
uterine growth: >20 wks
1 cm/wk gestation # cm = # wks long
uterine growth: 38-40 wks
2-3 cm below below xiphoid process
umbilical cord contains
1 vein
2 arteries
placenta function
nutrients, waste elimination, gas exchange, hormone production
fetal kidneys functional when
2nd trimester (lg amniotic fluid component)
fetal liver functional when
slow
at birth, coag factors not developed
vit K at birth!
fetal liver developed when
6 wks
fetal IgG passive immunity gone when
12 wks fetus makes IgG, M, D, E
pregnancy sign: timing of softening and enlargement of uterus
6 wks after LMP
enlarged uterus palpated timing
12 wks
urine HCG pos when
4 wks after 1st day of LMP (next menses due)
best 1st AM void
serum HCG more sensitive vs. urine
levels?
initially double q 42-72 hrs
transvaginal US timing
3-4 wks
US timing
5-6 wks
fetal heart sounds timing
12 wks
doppler device/fetoscope
abnormal HCG from expected stage?
ectopic
HCG day 23
100
HCG day 28
250
HCG day 35
1000
gestational age
1st day LMP -to- estimated date of delivery
1st day LMP + 7 days - 3 mo
routine prenatal visit: initial
what do they perform
6-8 wks after LMP
pelvic exam, PAP GC/chlamydia cultures CBC, blood type, Rh Hep B, syphilis, HIV, rubella, varicella GTT if high risk (obese, PCOS, FH)
routine prenatal visits frequency
initial: 6-8 wks after LMP
8-28 wks: q 4 wks
28-36 wks: q 2-3 wks
>36 wks: q wk
every visit entails
BP wt (gain 4 lbs/visit) UA (glucosuria NORMAL, proteinuria NOT normal) fundal ht (tape measure >20 wks) fetal HR (NORMAL 110-160)
options if breech
breech ok before 34 wks
external cephalic version (manipulate)- not if mult, uterine anomaly
Csection
purpose of 20 wk US
confirm intrauterine gestational age mult gestations? confirm cardiac activity nuchal transparency= Down's, chromosomal abnorm- US sooner
1st trimester (10-13 wks)- high risk findings (old mom)
US nuchal transparency
plasma protein A (Downs)
quad screen (special test in high risk moms, old age) what it includes, what it means
decr MS-AFP
decr estriol
incr HCG
incr inhibin A
=trisomy 21 (Downs), trisomy 18 (Edwards), chromasomal abnom
incr MS-AFP (maternal serum) means
neural tube defects
spina bifida
(tetralogy of fallot, anencephaly)
Downs screening 1st and 2nd trimester
1st trimester: PAPP-A (preg assoc plasma protein A)
nuchal transparency
2nd trimester: Quad testing
GBS at 32-36 wks
prophylaxis?
PCN G IV 5, then 2.5 q 4 hrs until delivery
PCN allergy: clindamycin, erythromycin
LGA causes
incorrect assessment gest age
mult preg
lg fetus
polyhydramnios (excess amniotic fluid)
SGA causes
incorrect assessment gest age
IUGR
intrauterine fetal demise
oligohydraminios (little amniotic fluid)
folic acid requirement
0.4 mg folic acid
travel/flying counsel
fly up to 36 wks
sexual activity counsel
not limited
smoking in pregnancy Sx
IUGR
low birth wt
mortality
morning sickness Tx
crackers, lay in bed, hard candy
pyridoxine (vit B6)
antihistamines (benadryl, dramamine, doxylamine)
antiemetics (phenergan, compazine)
DON’T USE ZOFRAN!
hyperemesis gravidarum Tx
corticosteroids
IVF
GBS testing when?
32-36 wks
false contractions (Braxton Hicks contractions) description
shorter, not as painful, not progressive, resolve with fluids/movement/analgesics
lightening definition
baby’s head poked out into pelvis
blood show definition
effacement, thinning cervix
desired presentation and lie
longitudinal, cephalic
effacement of cervix starts when
1 wk prior to delivery
full 10 cm dilation- what do you see?
membrane starting to come through
fetal stations definition
baby’s head vs. ischial spines and pelvis
station 0 (where, dilation, effacement)
at level of spines
3-4 cm dilated
70% effacement
aka “engagement”
dilation of cervix starts when
days before delivery
movements of labor
- engagement (station 0) days-wks before delivery
- head flex
- descent
- internal rotation, face down
- extension of neck, head delivered
- external rotation, face up
- expulsion
fetal monitoring during labor
- intermittent doppler monitor (1st stage q 30 min, 2nd stage q 15 min)
- electronic fetal monitoring
2nd stage of labor aka
“pushing” stage
bear down
full cervical dilation
length of 2nd stage of labor
primigravid: 30min-3hrs
multiparous: 5-30 min
modified ritgen maneuver when?
2nd stage of labor
prevent tears
push up against infant chin
perineal tearing 1st degree
vaginal laceration
perineal skin torn
perineal tearing 2nd degree
vaginal laceration
perineal skin torn
+perineal muscle torn
perineal tearing 3rd degree
vaginal laceration
perineal skin torn
perineal muscle torn
+external anal sphincter torn
perineal tearing 4th degree
vaginal laceration perineal skin torn perineal muscle torn external anal sphincter torn \+complete external anal sphincter torn \+rectal mucosa torn ALL THE WAY
2 normal NB head findings
molding (shift cranial bones)
caput succedaneum (edema scalp)
-resolve in 24 hrs
3 classic signs of placenta separation
- uterus rises in abdomen
- gush of blood
- lengthening umbilical cord
3rd stage of labor definition
placenta delivery, within 30 min infant delivery
risks postpartum uterine hemorrhage
rapid/protracted labor
enlarged uterus (polyhydramnios, lg fetus, mult gest)
chorioamnionitis (inflamm membr)
4th stage of labor definition
2hrs postpartum
labor induction drugs
oxytocin: stim contractions
misoprostol (prostaglandin): cervical ripening
rupture membranes
indications for C section
placenta previa abruptio placentae prolapse of umbilical cord uterine rupture breech
relative contraindications for vaginal birth after C section (5)
- Hx high/classic C section
- previous uterine rupture
- OB complications
- 2 prior uterine scars + no vaginal deliveries
- no vaginal birth at home after C section
indications for no resuscitation in NB
full term, CLEAR AMNIOTIC FLUID (no meconium), spontaneous breathing/crying, good muscle tone
Apgar signs (5)
Appearance (color) Pulse (HR) Grimace (reflex activity response to stim) Activity (muscle tone) Respirations
Apgar: color 0, 1, 2
blue/pale, acrocyanotic, pink
Apgar: HR 0, 1, 2
absent, 100
Apgar: reflex activity response to stim 0, 1, 2
none, grimace, cry/active WD
Apgar: muscle tone 0, 1, 2
limp, some flexion, active motion
Apgar: respirations 0, 1, 2
none, weak cry/hypoventilation, good crying
meds given within 1 hr delivery to NB
erythromycin (gonococcal ophthalmia)
vit K1 0.5-1 mg (prevent hemorrhagic dz of NB)
puerperium period
6-8 wks after birth
initial postpartum exam time
4-6 wks after
lochia
sloughed off endometrium, clots expelled, discharge
heavy 1st few days
resolves over several wks
cervix back to 1 cm when?
1 wk
ovarian function returns when?
nonlactating 3 wks
lactating 6 mo
uterus normal size (involution) when?
6 wks
cardiovascular system postpartum
incr HR resolves in 1 hr
incr plasma vol normal in 2-3 wks
renal system postpartum
incr GFR normal in several wks
urinary retention (edema around urethra)
stress incontinence normal in 3 mo
highest risk for postpartum hemorrhage when?
1st 24 hrs
pt mgmt postpartum
- ambulation encouraged
- breast engorgement uncomfortable, will resolve
- mastitis
- stool softeners
- perineum care: oral analgesics, local anesthetics (benzocaine spray), sitz baths
wt loss postpartum
2 lb/mo
sexual activity postpartum
in ~2wks
oral contraception while lactating?
yes. progesterone only (minipill)
- exclusively breastfeeding: start in 6 wks
- partially breastfeeding: start in 3 wks
breastfeeding benefits
- decr AOM, resp infections
- decr diarrhea
- decr SIDS
- decr atopic/allergic dz
- decr juvenile diabetes
- decr hospital admissions
breastfeeding contraindications
HIV, chemo, illegal drugs
Li, tetracycline, methotrexate, radioactive
hormones released in breastfeeding
oxytocin, prolactin
colostrum when?
first 5 days lactation
mother’s minimum calorie requirement (breastfeeding)
1800 calories/day
RF for PPD and postpartum psychosis
younger, Hx mental disorders, DEPRESSION DURING PREGNANCY
postpartum blues definition, onset, duration, Tx
sad/anxious/angry/insomnia/tearful
starts 2-4 days, for 1-2 wks
no Tx
PPD Tx
antidepressant, psychotherapy
postpartum psychosis Tx
antidepressant, antipsychotics
when to start checking fundal ht
20 wks
when to start checking fetal heart tones
10 wks
normal fetal HR
120-160 bpm
1st trimester screening
- preg-assoc plasma protein A (PAPP-A) (low= trisomy 21)
- free beta-HCG (high= trisomy 21)
- US: EDC, mult gestations
- nuchal translucency screening at 10-13 wks (pos= trisomy, Turners)
- chorionic villus sampling at 10-13 wks
US fetal heart activity detected when
5-6 wks after LMP
indications for nuchal translucency / chorionic villus sampling / amniocentesis
> 35 y/o, Hx chromosomal abnorm child/parent/FH, abnorm 1st/2nd trimester mom screening
-neural tube defect risk- amniocentesis
2nd trimester screening
estriol, AFP, inhibin A, US, amniocentesis
trisomy 21
low estriol, low AFP, low preg-assoc plasma protein A (PAPP-A)
high inhibin A, high free beta-HCG, pos nuchal translucency
estriol, AFP, inhibin A in trisomy 21
low estriol, low AFP, high inhibin A
US purposes
- fetal viability
- growth vs. gestational age
- placenta status/location
- amniotic fluid level
- lethal malformations
- f/u abnorm blood screening tests
amniocentesis when?
15-18 wks
3rd trimester screening
- gestational diabetes
- Rh repeat Ab titers
- vaginal culture for GBS
- H/H
- NST (non-stress test)
- US
- biophysical profile
GBS vaginal-rectal culture when?
35 wks
gestational diabetes screening when?
24-28 wks
H/H pregnancy screening when?
35 wks
CVS (chorionic villus sampling) when?
10-13 wks (1st trimester screening)
nuchal translucency when?
10-13 wks (1st trimester screening)
how to monitor fetal well-being
nonstress test (NST): doppler monitor, external stress gauge for uterine contractions
normal NST
reactive
- 2 accelerations of fetal HR in 20 minutes (incr 15 bpm baseline HR for 15 sec)
- absence of decelerations
decelerations definition
decr fetal HR 15 bpm OR 15 sec OR slow return to baseline
accelerations definition
incr fetal HR 15 bpm for 15 sec
bad sign in fetal HR
late decelerations
biophysical profile (BPP)- 5 parameters
NST, amniotic fluid level, gross fetal movement, fetal tone, fetal breathing
-each parameter 2 points, total of 10 points
biophysical profile when, purpose
- late in pregnancy
- monitor fetal well-being
GBS test when
32-36 wks