Prenatal care, Norm L&D, Puerperium Flashcards
What is the goal of prenatal care
healthy mom healthy baby
What factors are taken into consideration for preconception care
BMI Age Medical Hx Reproductive use Family Hx Substance use Nutrition
What factor must be included in the preconception phyical
check for dental carries
What labs are indicated for preconception care
Routine HIV, Rubella/Varicella titer, HepB Ag, RPR, Gonorrhea, Chlamydia, CBC
FBS, Hb A1C, HepC Ab, TB skin test, CF carrier stat, Tay Sachs
What vaccinations are contraindicated in pregnancy
MMR
Varicella
When do you give Rubella vaccine if the titer is negative
After the baby is born
What is the preconception recommendation for folic acid
0.4-0.8mg daily
When does a pregnant woman need a daily folic acid dose of 4mg
+ve Hx of neural tube defects
What are the recommendations for preconception care
Daily folic acid Abstain from alcohol + smoking Prevent HIV Good control of medical illnesses Keep menstrual diary
When is the first prenatal care visit recommended
Btw 6-7wks, no later than 10wks (1st trimester)
What happens at 1st prenatal visit
Full Hx (including inheritable dz) Gyn Hx (STD, PID, Abn pap) Obstetric Hx -G, P (TPAL) Social Hx (domestic violence, tobacco, alcohol, rec drug use, barriers to prenatal care)
What does LMP mean
First day of last menstrual period
EDC
Estimated date of confinement
EDD
Estimated date of delivery
How do you calculate EDC
Naegele’s rule
LMP + 7days - 3mos
Term gestation
37 weeks
Early term
37-0 to 38-6
Full term
39-0 to 40-6
Late term
41-0 to 41-6
Post term
≥ 42-0
What is the most important thing to determine during the 1st trimester gen physical exam
BMI, >30 = obesity = high risk
Chadwick’s sign
Bluish/purplish coloration of vagina/cervix
Hegar’s sign
Palpable softening at isthmus
Pelvic exam findings for 1st visit
- Uterine shape/size/adnexa
- Chadwick’s sign
- Hegar’s sign
- Clinical pelvimetry
- Specimen collection : Pap, Chlamydia + gonorrhea swab
What is the most important lab to do at 1st visit to confirm pregnancy
Urine HCG
In what population is Hgb A1C/ OGTT recommended
Obese
PCOS
Test of choice to confirm EDD
U/S
When can fetal cardiac motion be detected on transvaginal U/S
5.5- 6wks
1st trimester
1-12wks
2nd trimester
13-26wks
3rd trimester
27 wks to end of pregnancy
What is the freq of visits
1st 28 wks - q 4wks
28-36wks - q 2wks
36 wks to delivery - q 1wk
What is fetal quickening and when does it occur
First fetal moves
1st preg - 18 to 20 wks
≥2nd preg - 16 to 18 wks
When is it important to pay attention to kick counts
3rd trimester
What things are done at subsequent prenatal visits
Hx, PE (BP, Fetal heart tones, fundal height), extremities
Fundal height at pubic symphysis
12 wks
Fundal height at umbilicus
20 wks
Maneuvers done to determine position of baby’s parts
Leopold maneuvers
When are Leopold maneuvers done
3rd trimester
Routine labs during subsequent prenatal visits
Urine protein and sugar Gestational DM screen CBC Ab screen for Rh -ve women Group B strep testing
Diagnostic test for gestational DM
100g 3hr OGTT
When do you need to start Gestational DM screen
24-28wks
What is the screening test for Gestational DM
50g 1hr OGTT (fail if ≥130-140)
How many total Rh Ab screens are done
2; one at initial visit and again in 3rd trimester
What do you do if mom has a -ve Rh screen
300µg Rho Gam btn 28-30 wks
Where do you swab for Grp B strep screen
Lower vagina + rectum (35-37wks) : if +ve Abx prophylaxis
ACOG recommendation for aneuploidy screen
1st trimester aneuploidy screen includes
Nuchal translucency and serum markers for Down’s synd, Trisomy 13, 18
Quad screen includes
Down’s synd, Trisomy 13, 18, neural tube defects (serum markers: AFP, HCG, inhibin A) done btn 15-18 wks or as late as 22wks
Which lab tests are optional
Down’s syndrome screen
Cell free fetal DNA
Purpose of 1st trimester U/S
Dating
Location of preg, eval of bleeding/pain
True to 5-7days
Purpose of 2nd trimester U/S
Fetal anatomy
Fetal growth placental location, possible sex
True to 10-14 days
When can sex of baby be determined
18-20wks
Purpose of 3rd trimester U/S
Fetal growth, presentation, biophysical profile
True to 3 wks
How many extra calories do you need in pregnancy
300 cal /day
Recommended weight gain for BMI
28-40lbs
Recommended weight gain for BMI 18.5-24.9
25-35lbs
Recommended weight gain for BMI 25-29.9
15-25lbs
Recommended weight gain for BMI >30
11-20lbs
Tests of fetal well being
Fetal movt/kick counts
Non stress test
Contraction stress test
Biophysical profile
Common complaints of pregnancy
Nausea/Vomiting Back ache Varicosities HA Hemorrhoids Heartburn Pica Fatigue, vaginal discharge, round ligament pain, constipation, urinary req, sexual activity
Recommended kick counts
4x/hr or 10x/2hrs
DOC nausea
Diclegis after behavioral mods
Tx hyper emesis
IV hydration + steroids
Ominous signs of vaginal discharge
Odor or pruritis
What are the processes of labor
Labor - Effacement - Dilation - Station - presenting part
Defn. labor
Uterine activity that results in progressive dilation + effacement of cervix
Defn. Effacement
Thining/shortening of length of cervix
What is the normal length of the cervix
> 2.5cm
Defn. Dilation
Diameter of cervical os in cm
Diameter for complete dilation
10cm + 100% effacement
Defn. Presenting part
Part of the baby coming 1st through the birth canal
Defn. Station
Degree of descent of presenting part in the birth canal relative to ischial spines
True labor
Regular intervals of gradually increasing freq w/ back + abd. discomfort and no relief from sedation
Braxton Hick’s contraction (not true labor)
Irregular intervals and duration w/ lower abd. discomfort and relief from sedation
components of L&D eval
Review of Hx and PE Brief Hx Vitals Cervical exam Status of membranes Fetal monitoring
How to confirm membrane rapture
Sterile speculum
Pooling of amniotic fluid in vagina
Direct visualization of fluid leakage thru cervix when asked to cough or bear down
Nitrazine test
Fern test
Air dried amniotic fluid sample under microscope shows fern pattern = +ve rapture of membranes
pH that indicates rapture of membranes
6.5-8 (paper turns blue)
1st stage of labor
interval btn onset of labor and full cervical dilation and effacement
Latent phase
From first regular contractions to 3-4cm dilation (slow rate of dilation
Active phase
From latent phase to complete dilation (rate of 1cm/hr)
What increases the rate of 1st stage of labor
Parity
2nd stage of labor
Complete dilation to delivery of infant (pushing phase)
3rd stage of labor
After delivery of infant to delivery of placenta
3 Ps of labor
Power (uterine contractions)
Passenger (size + presentation of baby)
Passage (Pelvic size)
Adequate rate of contractions
3-5 in 10min
What causes the incr in freq and strength of contractions
PGI E2 and F2 alpha -> incr sensitivity to circulating oxytocin
How is power of contractions measured
Tocodynamometry
- Ext (freq + duration)
- Int = IUPC (freq + duration + intensity)
Macrocosmic infant
> 4500g
potential baby presentation
Vertex Face/Brow Breech: Frank, complete, Footling Transverse lie Compound (2 fetal parts)
What does position refer to during progress of labor
Relation of fetal presenting part in relation to left or right of mom’s pelvis
Parts of the bony pelvis
Inlet
Midpelvis
Outlet
Most common and best suited pelvic shape to child birth
Gynecoid
Least common pelvic shape
Platypelloid
Most unfavorable pelvic shape for delivery
Android
Pelvic shape that has occiput presentation most common
Anthropoid
Engagement
Passage of the widest diameter of the presenting part below plane of pelvic inlet
Flexion
Head completely flexed, fetus presents smallest diameter of its head
Descent
Greatest rate of descent during the latter part of 1st and 2nd stage of labor
Internal rotation
Rotation of presenting part from original position to anteroposterior position as it passes through the pelvis
Extension
Head extends beneath maternal pubic symphysis once the fetus descends to the level of the introitus- head delivers
External rotation (Restitution)
Head rotates 45deg to line up w/ shoulders which are oblique in maternal pelvis
Time frame for separation of placenta
within 30min
What are the signs of placenta seperation
Uterus rises in abdomen
Globular configuration
Gush of blood/lengthening of umbilical cord
Indications for manual separation of placenta
- Doesnt separate spontaneously
- Bleeding
How is fetal monitoring done
External ultrasound transducer
Int scalp ECG electrode
Baseline fetal heart rate
120-160
Tachycardia 160-180
Bradycardia 100-120
Short term heart rate variability
Variation in amplitude beat to beat
Long term heart rate variability
Wave like pattern that changes 4-6 cycles/min
Periodic acceleration of heart rate
incr 15bpm above baseline for 15sec
Periodic deceleration
Early: head compression, physiologic
Variable: Cord compression,
Late: Fetal hypoxia/placental insuff/maternal hypotension , ominous
1st degree obstetric laceration
Vaginal mucosa/perineal skin but no underlying tissue
2nd degree obstetric laceration
Underlying SQ tissue but not rectal
3rd degree obstetric laceration
Extends through rectal sphincter
4th degree obstetric laceration
Extends into rectal mucosa
Determination of successful likelihood of induction
Bishop score 9-13 points
What factors are used in the determination of Bishop score
Dilation Effacement, Station Cervical consistency Position of cervix
Ways in which labor can be induced
Stripping membranes Amniotomy Prostaglandin gel Oxytocin Misoprostol
What are the complications of using oxytocin
uterine hyperstim (>5contractions in 10min) fetal distress, water intoxication
Puerperium
6wk period following delivery of baby + placenta
What anatomic resolutions happen during puerperium
- Uterus from 1000g to 50-100g
- Cervix loses vascularity, glandular hypertrophy, hyperplasia
- Ovarian fxn resumes (+/- period; affected by lactation = 3mos)
- Vagina vault dear in size, thin inelastic walls
How long does mom stay in the hospital after the baby
Vaginal: 1-2 days
C-section: 2-4 days
When is the first postpartum exam
4-6wks
What is lactation supression
Someone who doesnt want to nurse
When is colostrum produced
1st day of lactation
When is mature milk produced
After day 3-5