USMLE Step 2 CK Lecture Notes 2019: Obstetrics/Gynecology (Kaplan Test Prep)

HEPATITIS B A 29-year-old multigravida was found on routine prenatal laboratory testing to be positive for he ...

Prevention includes: Management. No specific therapy for acute hepatitis; interferon or lamivudine for chronic HBV Lif ...

Table I-7-2 HBV in Pregnancy Group β beta streptococcus Colonization Penicillin G Vaginal Toxoplasmosis Immunity Pyrimetham ...

OBSTETRIC COMPLICATIONS ...

LEARNING OBJECTIVES Describe the management of cervical insufficiency and multiple gestation Answer questions ...

CERVICAL INSUFFICIENCY A 32-year-old primigravida at 18 weeks’ gestation comes to the maternity unit complainin ...

OB TRIAD Cervical Insufficiency Cervical insufficiency (or cervical incompetency) has been used to describe ...

exposure. Serial transvaginal ultrasound evaluations of the cervix after 16–20 weeks may be helpful. Management. W ...

MULTIPLE GESTATION A 21-year-old primigravida at 15 weeks’ gestation is seen for a routine prenatal visit. ...

OB TRIAD Di–Di Di or Mono–Di–Di Twins Multiple gestation is a pregnancy in which more than one fetus ...

Mono–Mono–Mono Twins Complications for all twin pregnancies include nutritional anemias (iron and folate), preeclamps ...

Figure I-8-1. Multiple Gestation Dizygotic twins arise from multiple ovulation with two zygotes. They ar ...

Up to 72 hours (separation up to the morula stage), the twins are dichorionic, diamnionic. There are two placenta ...

Dichorionic–diamnionic 0–3 days Morula Monochorionic–diamnionic 4–8 days Blastocyst Monochorionic–monoamnionic 9–12 days Fig ...

Table I-8-2. Postconception Days to Identical Twin Cleavage Embryonic disk Conjoined >12 days Embryo With mul ...

ALLOIMMUNIZATION A 32-year-old woman, G2 P1, is seen for her first prenatal visit at 12 weeks’ gestation. Pren ...

woman is transfused with mismatched RBCs. Other pregnancy-related risk factors are amniocentesis, ectopic pregnan ...

NOTE Fetal blood type may be determined by amniocentesis or percutaneous umbilical blood sampling (PUBS). If ...

MCA flow is elevated. If gestational age <34 weeks, perform intrauterine intravascular transfusion. If gestatio ...

OB TRIAD Preterm Contractions Pregnancy 20–36 weeks ≥3 contractions in 30 min Dilated <2 cm and no change ...