OB Flashcards
3 signs of placental separation after delivery of baby
Gush of blood
Lengthening of cord
Uterine changes: hardening
Stages of labor
- Cervical dilation and effacement
Ends when cervical is fully dilated (10 cm) - Delivery of fetus
- Delivery of placenta
What is the role of hCG?
Maintenance of the corpus luteum in order to maintain progesterone secretion until the placenta is able to produce progesterone on its own
Premature rupture of membranes can cause what type of decelerations?
Variable – cord compression due to lack of amniotic fluid
Treat with amnioinfusion!
What does the progesterone challenge test look for?
Presence of estrogen
If there is withdrawal bleeding - pt has estrogen (PCOS)
If there is no withdrawal bleeding- pt does not have enough estrogen or has an anatomic condition (Ashermans syndrome)
When can you start to hear fetal heart tones?
12 weeks via Doppler
Erb palsy vs Klumpke
Erb: 5th and 6th cervical nerves
Klumpke: 8th cervical nerve and 1st thoracic nerve
Symmetric vs asymmetric IUGR
Symmetric IUGR
o Chromosomal abnormalities, congenital anomalies, fetal infections
Asymmetric IUGR
- Low abd circumference, normal biparietal diameter
o When fetal access to nutrients is compromised
o Maternal nutritional deficiency, HTN, uteroplacental insufficiency
What imaging should be done after a patient has an ultrasound-confirmed molar pregnancy?
CXR: most likely to metastasize to the lungs
Recommendation for seizure meds in pregnancy
High dose folic acid and stay on seizure meds
Treatment of dysmenorrhea
- NSAIDs
2. OCPs
Medical management of ectopic pregnancy
Methotrexate
Thyroid hormones changes in pregnancy
Free T3 and T4 levels = unchanged
TBG = increased
Total T4 = increased
Acid base status in pregnancy
Chronic respiratory alalosis with metabilic compensation
Why should asymptomatic UTIs be treated in all pregnant women?
Progsterone levels cause smooth muscle relaxation and ureteral dilation – increases risk of ascending infection (acute pyelonephritis)
Need to do a test of cure after antibiotic to make sure the infection has cleared
Twin twin tranfusion syndrome is seen in most in what type of twins
Monochorionic diamniotic
Most common cause of postpartum hemorrhage
Uterine Atony
Other causes: Tone: atony Tissue: retained placenta Trauma: laceration Thrombin: underlying coagulopathy
Protein level in 24 hours seen in severe preeclampsia
> 5000 mg (5 g)
The ovarian artery runs through which structure?
The suspensory ligament
Causes of fetal tachycardia
Maternal fever (chorio), maternal hyperthyroidism, medication use, placental abruption
Obesity is a risk factor for what type of cancer?
Endometrial: excess adipose tissue causes unopposed estrogen
Aromatase in adipose cells converts androgens into estrogens
What is the most effective screening test for Down Syndrome?
Cell free DNA
Treatment of early decels
Nothing. Related to head compression
What is the most accurate way of assessing gestational age?
First trimester US with crown-rump length