OB GYNE Flashcards
A 35 year old G2P1 (1001) 28 weeks AOG with chronic hypertension has a fundic height of 25
cm. Which biometric measurement is the most helpful in monitoring fetal growth?
A. Biparietal diameter
B. Femur length
C. Abdominal circumference
D. Head circumference
C
This correlates with the timing of the biometry (during the second trimester), and the purpose of
monitoring fetal growth and NOT fetal age
A 19 year old G1 came in at 32 weeks AOG with BP of 160/120. Previous BP were in the
range of 100-140/60-80. PE was essentially normal. Abdominal examination shows FH 22 cm,
EFW 0.4-0.6 kg, FHT 150s/RLQ. Lab examinations show the following:
Hb 111 mg/dl, Hct 0.7, platelet 98 000, AST 372 U/L, ALT 555 U/L, LDH 1080 U/L, creatinine 1.1
mg/dl, BUN 17 mg/dl. Urinalysis shows +1 protein, internal examination shows her cervix to be 1
cm dilated, intact membranes and presenting part at station -2. CTG showed a category 1 trace.
What is the appropriate management?
A. Tocolytic therapy with MgSO4 and delivery at 34 weeks
B. Emergency Cesarean delivery after control of hypertension
C. Delivery after corticosteroid administration
D. Expectant management
C
D is out since our patient is already preeclamptic with severe features. We just have to determine
how urgent the situation is. A is too conservative since the patient is already showing signs of
HELLP syndrome and 2 weeks is a long time to have the patient remain in this state. Between B
and C, C is more helpful to the baby since at 32 weeks fetal lung maturation is still lacking
What is the daily elemental iron requirement (in mg) in a 20 year old G1P0 23 weeks AOG with
hemoglobin of 12.5 gm/dl, hematocrit 0.35, MCV 97?
A. 15
B. 30
C. 60
D. 120
B
Patient is a healthy primigravid. Go for the recommended dose of 27 mg/day, rounded up to 30.
A 30 year old G1P0 with a twin pregnancy at 24 weeks AOG has a hemoglobin of 10 gm/dl.
How much daily iron (in mg) should she receive?
A. 30
B. 60
C. 90
D. 120
B
Which of the following fetal heart rate features is the earliest reliable sign of fetal compromise? A. Fetal tachycardia B. Loss of FHR variability C. Absence of FHR accelerations D. Presence of late decelerations
B
A pale and weak-looking 12 year old was brought to the ER because of menstrual bleeding of
7 days. She narrates the same pattern of flow since menarche, associated with easy bruisability
and gum bleeding. What is the probable cause of abnormal vaginal bleeding?
A. Dysfunctional uterine bleeding
B. Pregnancy-related
C. Reproductive tract disease
D. Blood dyscrasia
D – the easy bruisability and gum bleeding are clinchers, pointing to a more systemic
cause
In a 20 year old G1P0 40 weeks AOG with AFI=4.0, which test will best predict the fetal capability to tolerate labor? A. Non-stress test (NST) B. Biophysical profile (BPP) C. Umbilical artery Doppler velocimetry D. Contraction stress test (CST)
D – this test determines uteroplacental sufficiency. The presence of late decelerations
following 50% or more of contractions is a positive (that is abnormal) CST.
What is the minimum pressure in mmHg of uterine contractions required to dilate the cervix during labor? A. 5 B. 15 C. 25 D. 35
B
Which of the following statements suggests midpelvic contraction? A. Transverse diameter is 10.5 cm B. Sacral curvature is hollow C. Pelvic side walls are parallel D. Sacrosciatic notch is narrow
D
A is still within normal. I’m not sure what a “hollow” curvature is but if that means that it’s deep,
then that’s good for vaginal delivery. Parallel or divergent pelvic side walls are also good.
MR 34 year old G1P0 PU 8 weeks went to the ER today because of palpitation. She said that
despite her good appetite, she is not gaining weight. She also finds it difficult to sleep at night.
You noticed a 4 x 5 cm anterior neck mass. She has finger tremors and her eyes are bulging.
What of the following laboratory tests is expected to reveal decreased result at this time?
A. TRH
B. FT4
C. TSH
D. FT3
C
She has signs and symptoms of hyperthyroidism. Expected labs are increased FT4/FT3 and
decreased TSH.
To arrive at the diagnosis of hyperthyroidism, what result of the thyroid function tests are
expected?
A. Elevated TSH, elevated FT4 and FT3
B. Decreased TSH, elevated FT4 and FT3
C. Elevated TSH, decreased FT4 and FT3
D. Decreased TSH and TRH, decreased FT4 and FT3
B
Which among the antero-posterior diameters is clinically measurable by pelvic examination? A. Obstetric conjugate B. True conjugate C. Conjugate vera D. Diagonal conjugate
D
Measured from the sacral promontory to the inferior margin of the pubic symphisis, the diagonal
conjugate is used to estimate the obstetric conjugate which is of clinical importance.
What is the presentation when the portion of the fetal head between the orbital ridge and the
anterior fontanel presents at the pelvic inlet?
A. Brow
B. Mentum
C. Sinciput
D. Occiput
A
A 30 year old G3P2 (2002) 28 3/7 weeks by LMP came in for prenatal visit. Her findings are
unremarkable. When will you advise her to follow up?
A. After 1 week
B. After 2 weeks
C. After 1 month
D. After 4 days
B
OB normal case of every 4 weeks until 28 weeks,
every 2 weeks until 36 weeks, then weekly thereafter.
A 22 year old G1P0 on her 10th week AOG came in for prenatal visit. Her course is
unremarkable with no history of neural tube defects. She inquires about which supplements she
has to take daily during her pregnancy. You advise her
A. Not to take anything as a well-balanced diet will provide the RDA she needs
B. 500 mg calcium and 27 mg iron
C. 400 ug folic acid and 27 mg iron
D. 500 mg calcium, 27 mg iron, and 4 mg folic acid
C
0.4 mg folic acid and 27 mg iron are the recommended nutritional supplementation for a pregnant
woman without risk factors. If the risk of neural tube defects is increased, 4 mg folic acid is
recommended. Actually Williams doesn’t recommend active calcium supplementation but the
residents seem to give it anyway.
A 19 year old primigravid came in at the OBAS with vaginal bleeding. Her amenorrhea is 12
weeks. On pelvic examination, the cervix is open and the corpus is 8 wks size. Your diagnosis is:
A. Incomplete abortion
B. Completed abortion
C. Threatened abortion
D. Septic abortion
A
Because the corpus is still enlarged to 8 weeks, it’s likely that there are retained products of
conception. Conversely, the abortion isn’t just threatened since the corpus is smaller than
expected. There is no mention of instrumentation or signs such as fever that may point to septic
abortion.
Which of the following is the most significant risk factor for postpartum endometritis? A. Cesarean section B. Internal uterine pressure monitor C. Multiple internal examinations D. Prolonged rupture of membranes
A
See chapter 37 on puerperial complications in Williams. B to D are also risk factors, but are
particularly associated with CS (as in women who underwent CS have increased risk for
endometritis when B to D are present in the course of their labor and delivery). Other independent
risk factors include low socioeconomic status, GA, CS for multifetal gestation, young maternal
age and nulliparity, prolonged labor induction, obesity, and meconium-stained amnionic fluid.
A 25 year old postpartum develops breast engorgement, pain, and whitish nipple discharge. What is the appropriate management? A. Amoxicillin B. Nystatin C. Paracetamol D. Bromocriptine
C
A 4 cm vaginal hematoma was diagnosed three hours postpartum in a 30 year old G1P1
(1001). The patient has stable vital signs, no pallor, and complains of bearable pain. What is the
management?
A. Close observation
B. Tranexamic acid
C. Vaginal pack
D. Ligation of bleeders
D
A G1P0 42 5/7 weeks AOG BPS 10/10, IE 1 cm 80% effaced, anterior, soft, station 0. What is the management? A. Expectant B. Cervical ripening C. Induction of labor D. Cesarean section
C
What is the most accurate predictor of preterm birth? A. Cervical length B. Cervical funneling C. Salivary estriol D. Fetal fibronectin
A
A 19 year old G1P0 admitted for eclampsia had a second episode of generalized tonic-clonic
seizures. She already received the complete loading dose of magnesium sulfate. Which of the
following is the most appropriate treatment?
A. Diazepam 5 mg
B. Lorazepam 10 mg
C. Magnesium sulfate 2 g
D. Phenytoin 50 mg
C
A 35 year old G2P1 at 21 weeks AOG with 75 g OGTT values (mmol/L): fasting 5.2, 1st hour
11.5, 2nd hour 8.0. What is the diagnosis?
A. Negative for DM
B. Impaired glucose tolerance
C. Pregestational diabetes
D. Gestational diabetes
D
You need at least 2 out of the 3 values to be abnormal to diagnose GDM.
A 20 year old G1P0 24 weeks AOG with tachycardia, hypertension, lid lag, anterior neck
mass, and weight loss. What is the best treatment?
A. Propylthiouracil
B. Methimazole
C. Radioiodine
D. Beta-blocker
A
A 24 year old G1P1 (1001) presents with tender, erythematous, engorged right breast 2
weeks postpartum. Temp 38.9 C. What is the first line of treatment?
A. Cefuroxime
B. Azithromycin
C. Cloxacillin
D. Co-trimoxazole
C
Classic presentation of mastitis. Go for cloxacillin, the antibiotic of choice for soft tissue and skin
infections.
A 19 year old G1P0 at 41 weeks AOG wants to have an immediate CS because her parents
think she is overdue. As the ICC in charge (hahaha what a joke) what would you advise?
A. Immediate delivery
B. Contraction stress test
C. BPP to assess fetal status
D. Wait one week before intervention
C
The following best describes non-stress test (NST):
A. It is reactive if two or more accelerations are present in a period of twenty minutes
B. It is a test of uteroplacental function
C. If there are insufficient fetal accelerations, it predicts fetal compromise
D. It is performed once weekly in high risk pregnancies
A
An 18 year old primigravid at 39 weeks AOG is sent to labor and delivery room for induction
of labor secondary to preeclampsia. She had an uncomplicated prenatal course until yesterday,
when she began to feel like she had the flu. On evaluation at a prenatal visit today, her BP was
150/100, with 2+ proteinuria. Examination reveals her cervix to be 3 cm dilated and 75% effaced.
After initial evaluation in the labor and delivery room, induction of labor is begun with oxytocin and
IV magnesium sulfate is started. For which of the following reasons is the magnesium sulfate
given to this patient?
A. To control hypertension
B. To control proteinuria
C. To prevent hemorrhage
D. To prevent seizures
D – mag sulfate is both therapeutic and prophylactic for ecclamptic seizures
A G1P0 38 weeks AOG with watery vaginal discharge for 3 hours, with irregular hypogastric
pains. Vital signs normal, afebrile, FH 32 cm, FHT 150/min. Speculum exam, pooling of clear
fluid. IE closed, 50% effaced, station -1. What is the management?
A. Antibiotics
B. Cervical ripening agent
C. Induction of labor
D. Cesarean section
C
A 34 year old G3P2 (2002) presented with vaginal bleeding on her 29th week AOG. No uterine
contractions. Good FHTs. What is the next BEST step?
A. Speculum examination
B. Careful internal examination
C. Transvaginal ultrasound
D. Abdominal ultrasound
A
A G1P0 35 weeks AOG came in with watery vaginal discharge of 8 hours duration with labor
pains for 2 hours. Normal vital signs, afebrile. FH 32 cm, FHT 150/min. Speculum reveals pooling
of clear fluid. IE 2 cm, 50% effaced, cephalic, station -1. What is the initial management?
A. Dexamethasone
B. Ampicillin
C. Oxytocin drip
D. Prostaglandin
B
A 22 year old G1P1 (1001) delivered vaginally 30 minutes ago. She had moderate to profuse
vaginal bleeding with a 16 week-sized firm uterus. What is the most probable clinical diagnosis?
A. Retained blood clots
B. Blood dyscrasia
C. Genital tract laceration
D. Uterine rupture
C
A 36 year old G4P3 (3003) previous 3 ceserean sections in second stage of labor for 2.5
hours with FH 38 cm, FHT 140, cephalic, station 0, suddenly presents with severe abdominal
pain and vaginal bleeding, FHT is 110, station -3. What is the diagnosis?
A. Abruptio placenta
B. Uterine rupture
C. Placenta previa
D. Vasa previa
B
What diagnostic test is best done in a patient who is 3 weeks postpartum with profuse vaginal bleeding and a uterine size of 12 weeks? A. Serum beta HCG B. Blood coagulation studies C. Transvaginal ultrasound D. MRI
C
What is the physiologic increase in plasma volume in liters (L) during a normal pregnancy? A. 0.5 to 1.0 B. 1.5 to 2.0 C. 2.5 to 3.0 D. 3.5 to 4.0
B
At which age of gestation (in weeks) is the fetus at highest risk for acquiring congenital varicella? A. Before 13 B. 13 to 20 C. 21 to 28 D. Beyond 28
B
In which period of pregnancy is vertical transmission of HIV highest? A. Antepartum B. Intrapartum C. Postpartum D. Lactation
B
A 19 year old G1P0 10 weeks AOG presents with cough, hemoptysis, night sweats, with (+)
sputum AFB. What is the recommended treatment?
A. Isoniazid, rifampicin
B. Isoniazid, rifampicin, streptomycin
C. Isoniazid, rifampicin, ethambutol
D. Isoniazid, rifampicin, ethambutol, pyrazinamide
C