OB, UST Revalida Review Flashcards
OB History
G P (TPAL)
Rule for EDD
Naegele’s Rule +7 -3
Fundic height measurement starts at
16-18 weeks AOG
Leopold’s manoeuvre starts at
28-30 weeks
LM 1
Fundal grip
LM 2
Umbilical grip
LM 3
Pawlik grip
LM 4
Pelvic grip
Leopold’s maneuvers
Level of uterus-AOG: Symphysis pubis
12 weeks
Level of uterus-AOG: Midway between symphysis pubis and umbilicus
16 weeks
Level of uterus-AOG: Umbilicus
20 weeks
Adnexa cannot be evaluated if the uterus is ___ months size
3 months
Consistency of cervix if pregnant
Soft
Probable signs of pregnancy
1) Abdominal enlargement 2) Ballotement (20th week) 3) Braxton-Hicks contractions (28th week) 4) Outlining of fetus 5) (+) pregnancy test 6) Hegar sign 7) Goodell sign 8) Softening of cervix 9) Beaded pattern of cervical mucus
Softening of uterine isthmus
Hegar sign
Cyanosis of cervix
Goodell sign
When Goodell sign is appreciated
4 weeks
When softening of cervix is appreciated
6-8 weeks
Beaded cervical mucus is an effect of what hormone
Progesterone
Onset of elevated β HCG in pregnancy
8-9 days after ovulation
Peak of elevated β HCG in pregnancy
60-70 days
Nadir of β HCG in pregnancy
14-16 weeks
Positive signs of pregnancy
1) FHT 2) Perception of active fetal movement by the examiner 3) Recognition of embryo or fetus by ultrasound
FHT-weeks: TVS
6-8 weeks
FHT-weeks: Doppler
10-12 weeks
FHT-weeks: Stethoscope
18 weeks
When active fetal movement is perceived by examiner
20 weeks
UTZ-weeks: Gestational sac
4-5 weeks
UTZ-weeks: Fetal heart beat
6-8 weeks
CRL is predictive of gestational age up to ___ weeks
12
Most accurate determinant of gestational age
1st trimester ultrasound
LMP may be used in determining gestational age if difference from early ultrasound is
Less than 2 weeks
Danger signs of pregnancy
1) Persistent headache 2) Blurring of vision 3) Persistent nausea and vomiting 4) Fever and chills 5) Hypogastric pain 6) Decreased fetal movement 7) Dysuria 8) Bloody vaginal discharge 9) Watery vaginal discharge 10) Edema of hands and feet
When to request: TVS for fetal viability and aging
Less than 12 weeks
When to request: Fetal biometry
> 13 weeks
When to request: BPS
28 weeks
Physiologic anemia, 1st, 2nd, and 3rd trimester respectively
Less than 11 g/dL; less than 10.5 g/dL; less than 11 g/dL
WBC level in pregnancy
Leukocytosis
When to request HBsAg
Near term
What tests to request on the first visit
1) UTZ 2) CBC 3) Blood typing 4) UA 5) HBsAg if near term 6) Pap smear 7) GDM screening
Caloric requirements in pregnancy
1st trim: 2000 kcal/day 2nd trim: 2300 kcal/day 3rd trim: 2300 kcal/day
Normal weight gain pregnancy
25-35 pounds or 1 pound per week; 2 pounds in 1st trimester, 11 lbs each in the 2nd and 3rd trimester
Iron requirement for the entire pregnancy
1g
Breakdown of 1g iron need for pregnancy
300 mg: fetus and placenta 500 mg: expanding maternal hgb mass 200 mg: excreted
Amount of daily elemental iron required in pregnancy
30 mg
Required daily calcium supplementation in pregnancy
400-900 mg
Daily zinc requirement in pregnancy
12 mg
Impairs phosphorus absorption
Antacid
Daily folate requirement in pregnancy
350 mcg/day
Frequency of prenatal check up
1) Monthly until 28 weeks 2) Every 2 weeks until 36 weeks 3) Weekly 37 weeks onwards
Criteria for preterm labor
1) After 20 weeks, before 37 weeks 2) Regular contractions (4 in 20 minutes) 3) At least 1 of the following: Progressive cervical changes, cervical dilatation of 2 cm or more, effacement of 80% or more
Preterm labor: Etiology
1) Infection 2) Low socio-economic and nutritional status 3) Maternal factors: Uterine anomalies 4) Fetal factors: Multiple pregnancies, PROM, congenital malformations
Preterm labor: Predictors
1) Biochemical: Fibronectin and estriol 2) Sonographic: Cervical funnelling (YVU on sonography) and cervical length
Cornerstone in management of preterm labor
Forestall preterm delivery
Management of preterm labor
1) Tocolysis 2) Bedrest 3) Treat underlying infection
Preterm delivery should be delayed for only how long
At least 48 hours to allow steroids to work
Tocolytics
1) Beta agonist (ritodrine, terbutaline, isoxuprine) 2) MgSO4 3) CCB (nifedipine, nicardipine) 4) PG inhibitors (indomethacin, naproxen)
MOA in tocolysis: Beta agonist
Reduction of intracellular Ca
MOA in tocolysis: MgSO4
Calcium antagonist
Steroid therapy is indicated at what AOG
24-34 weeks
Betamethasone dose
12 mg/IM Q24h x 2 doses
Dexamethasone dose
6 mg/IM Q12h x 4 doses
Steroid that can cause periventricular leukomalacia
Dexamethasone
When to screen for GDM: Average risk
24-28 weeks
GDM: Screening modality
Average risk - FBS, RBS, HbA1c; High risk - 75g OGTT
High risk for GDM
1) Strong family history of DM 2) Obese, BMI >30, or excessive gestational weight gain 3) Previous history of GDM, htn, metabolic syndrome, PCOS, and macrosomic infant 4) Glucosuria 5) Age >25 6) Poor OB history: Fetal demise, fetal malformation 7) Current use of steroids 8) Member of ethnic groups with high GDM prevalence (includes Filipinos)
Macrosomia, weight
> 9 lbs
Protocol for evaluation of diabetes in pregnant Filipino women
Protocol for evaluation of diabetes in High Risk pregnant Filipino women
Diabetogenic hormones secreted by placenta
1) GH 2) CRH 3) Placental lactogen 4) Progesterone
Fetal complications of GDM
o Abortion o Congenital anomalies o IUGR o Macrosomia o Hydramnios o Birth injury o Preterm delivery o Unexplained fetal death
Maternal complications of GDM
o Preeclampsia o Infections o Dystocia o Higher incidence of operative delivery o Diabetic Nephropathy, Retinopathy, Diabetic Neuropathy o Ketoacidosis
GDM management
1) Diabetic diet 2) 7-point CBG monitoring 3) Refer to endo if uncontrolled 4) Fetal surveillance
Diabetic diet: kcal/kg/day for normal body weight
30-35
Diabetic diet: kcal/kg/day for obese
24
Diabetic diet: Caloric composition
Complex carbs 40-50% Proteins 20% Unsaturated fats 30-40% Given as 3 meals and 3 snacks daily
7-point CBG monitoring
Pre-meals (3), 1 hours post meals (3), and at bedtime
Normal pre-meal CBG
70-100 mg/dL
Normal 1hr pp CBG
Less than 140 mg/dL
Normal 2hr pp CBG
Less than 120 mg/dL
When to do congenital anomaly scan
18-20 weeks
Conditions in GDM wherein early delivery is indicated
1) Vasculopathy 2) Nephropathy 3) Prior stillbirth 4) Poor glucose control
Htn in pregnancy is defined with a BP of
140/90 or higher on more than 1 occasion
Systolic BP of 140 mmHg or higher or a diastolic BP of 90 or higher on more than 1 occasion, > 20 weeks AOG, no proteinuria
Gestational Htn
Systolic BP of 140 mmHg or higher or a diastolic BP of 90 or higher on more than 1 occasion, before 20 weeks AOG and persists beyond 12 weeks postpartum; no proteinuria
Chronic Htn
Systolic BP of 140 mmHg or higher or a diastolic BP of 90 or higher on more than 1 occasion, after 20 weeks AOG; (+) proteinuria
Preeclampsia
Proteinuria level to diagnose preeclampsia
300 mg or more in a 24 hour urine specimen
Maternal risk factors for preeclampsia
1) First pregnancy 2) Age under 20 or over 35 3) High bp before pregnancy 4) Previously preeclamptic 5) Short inter pregnancy interval 6) Family history of preeclampsia 7) Obesity 8) DM 9) Kidney disease 10) RA 11) Poor protein or low calcium status
Paternal risk factors for preeclampsia
1) First time father 2) Previously fathered a preeclamptic pregnancy
Fetal risk factors for preeclampsia
1) Multifetal pregnancy 2) Hydrops/triploidy 3) Hydatidiform mole
BP in mild preeclamspia
More than 140/80
BP in severe preeclampsia
More than 160-110
Proteinuria in mild preeclampsia
>300 mg/d or > +1 dipstick
Proteinuria in severe preeclampsia
>2g/d or > +2 dipstick
Cardinal principles in the treatment of preeclampsia
1) Prevent convulsions 2) Control htn 3) Deliver at optimum time and mode
Anticonvulsant of choice in pregnancy
MgSO4
MOA of MgSO4 in preventing convulsion
Reduces cerebral vasoconstriction and ischemia
MgSO4: Loading dose
4g SIVP over 20 mins 5g deep IM on each buttocks