OBGYN UWorld Flashcards
What are early decelerations caused by?
- fetal head compression
- not nonreassuring
What is the tx of HELLP in a woman >34 wks?
-immediate delivery!
Pseudocyesis?
- psychiatric condition
- woman presents w/ all the ssx of pregnancy, but ultrasound shows normal endometrial stripe and negative pregnancy test
- form of conversion disorder
Missed abortion?
- ultrasound shows intrauterine collapsed gestational sac + absent fetal cardiac activity
- office pregnancy test will be positive
Tx of small HPV lesions?
- trichloroacetic acid
- podophyllin
- both tx are in office tx
Tx of larger HPV lesions?
- Excision
2. Fulguration (electric current)
Tx for gonorrhea?
- ceftriaxone
- plus tx for co-infection with chlamydia with azithromycin or doxycyline
What beta hCG levek is necessary to view gestation sac with transabdominal US? Transvaginal US?
- transabdominal = > 6,500
- transvaginal = > 1,500
What rate of change of beta hCG is considered normal for a normal pregnancy?
- doubling every 48 hours
- slower rise = ectopic pregnancy
After what point is a breech presentation probably not going to change?
- > 37 wks
Major sfx of raloxifene?
-increased risk for venous thromboembolism
Raloxifene: MOA? Use?
- selective estrogen receptor modulator
- increases bone mineral density
- use = prevent osteoporosis
Lower pain that radiates to the thighs and back that begins hours before menstruation?
- primary dysmenorrhea
- believed to be caused by an increased release prostaglandins during the breakdown of the endometrium
Pregnant women and the influenza vaccine?
-CDC recommends that ALL pregnant women are vacinated!
Tx of syphilis?
-penicillin V, even in an allergic pt! (Desensitize and give it to them! )
What increases the risk for cervical insufficiency?
- Maternal obstetrical trauma
- Past GYN procedures, including LEEP or cone bx
- DES exposure
- Multiple gestation
- Hx of preterm birth or second trimester pregnancy loss
Short cervix?
-cervix that is below the 10th percentile for gestational age
What BPP suggests severe fetal asphyxia? Tx?
- biophysical profile score of 2 or less
- tx: immediate delivery
What 5 things make up the BPP?
- Nonstress test (reactive)
- Fetal tone (flexion or extension of an extremity)
- Fetal mvmnts (at least 2 in 30 min)
- Fetal breathing mvmnts (at least 20 sec in 30 min)
- Amniotic fluid volume (single pocket greater than 2 cm in vertical axis)
- each get a score of 0-2
Adipose tissue and estrogen?
-adrenal androgens get converted into estrogens by the adipose tissue
Cause of hypotension with epidural anesthesia?
- blood redistributes to lower extremities and venous pooling occurs
- due to fiber block that results in vasodilation of lower extremity vessels
What is the best test for fetal chromosomal abnormalities in the first trimester?
-chorionic villius sampling
When is chorionic villus sampling typically done? Why?
- usually done btwn 10-12 wks
- when done before 9 wks there is a greater risk of distal limb reduction defects
2 Major complications of chorionic villus sampling?
- Limb reduction defects
2. Fetal death
Intrauterine fetal demise?
-death of fetus in utero after 20 wks gestation
What should be done after the dx of IUFD? Why?
- Coagulation studies
- to detect DIC
- retention of dead fetus can cause chronic consumptive coagulopathy due to the gradual release of tissue factor from placenta into maternal circulation
- low levels of fibrinogen can be an early sign of consumptive coagulopathy –> tx = delivery!!
Tx of chorioamnionitis associated with PPROM?
-broad-spectrum antibiotic tx + delivery of fetus!
2 causes of HTN in < 20 wks gestation?
- Chronic HTN
2. Hydatidiform mole
What is the most common risk for placental abruption?
-HTN
What should be ruled out in any woman of child bearing age with secondary amenorrhea?
-PREGNANCY!!
Tx of BV?
-oral metronidazole (in both pregnant and nonpregnant women)
Threatened abortion?
- any hemorrhage that occurs before 20th week of gestation w/ a live fetus
- cervix is closed
- no passage of fetal tissue