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CHAPTER 15: Fetal Disorders

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    AMA Citation
    Fetal Disorders. In: Patel S, Roberts S, Rogers V, Zink A, Duryea E, Morgan J. Patel S, & Roberts S, & Rogers V, & Zink A, & Duryea E, & Morgan J(Eds.),Eds. Shivani Patel, et al.eds. Williams Obstetrics Study Guide, 25th Edition. McGraw-Hill; Accessed July 04, 2020. https://accessmedicine.mhmedical.com/content.aspx?bookid=2501&sectionid=202899242
    APA Citation
    Fetal disorders. Patel S, Roberts S, Rogers V, Zink A, Duryea E, Morgan J. Patel S, & Roberts S, & Rogers V, & Zink A, & Duryea E, & Morgan J(Eds.),Eds. Shivani Patel, et al. (2019). Williams Obstetrics Study Guide, 25th Edition. McGraw-Hill. https://accessmedicine.mhmedical.com/content.aspx?bookid=2501&sectionid=202899242
    MLA Citation
    "Fetal Disorders." Williams Obstetrics Study Guide, 25th Edition Patel S, Roberts S, Rogers V, Zink A, Duryea E, Morgan J. Patel S, & Roberts S, & Rogers V, & Zink A, & Duryea E, & Morgan J(Eds.),Eds. Shivani Patel, et al. McGraw-Hill, 2019, https://accessmedicine.mhmedical.com/content.aspx?bookid=2501&sectionid=202899242.

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Fetal Disorders

Which of the following does not contribute to the low rate of alloimmunization in pregnancy?

a. Maternal-fetal ABO incompatibility

b. Administration of anti-D immune globulin

c. Low prevalence of incompatible red cell antigens

d. Consistent maternal immune response to the antigen

d Red Cell Alloimmunization

A 28-year-old G2P1 presents for prenatal care at 10 weeks’ gestation. A type and screen is sent as part of her initial prenatal care labs, and it returns positive for anti-E antibodies at 1:8. What is the best first step in management?

a. Obtain paternal antigen testing

b. Repeat antibody titer in 4 weeks

c. Obtain paternal antibody testing

d. Obtain middle cerebral artery Doppler studies

a Management of the Alloimmunized Pregnancy

A 28-year-old G2P1 presents for prenatal care at 10 weeks’ gestation. A type and screen is sent as part of her initial prenatal care labs, and it returns positive for anti-E antibodies at 1:8. Paternal testing is not an option. The lab reports a critical titer of 1:16. What is the best next step in evaluation?

a. Repeat antibody titer in 4 weeks

b. Amniocentesis for fetal genotype

c. Amniocentesis for fetal phenotype

d. Serial middle cerebral artery Doppler studies starting at 16-18 weeks’ gestation

a Management of the Alloimmunized Pregnancy

A 28-year-old G2P1 presents for prenatal care at 10 weeks’ gestation. A type and screen is sent as part of her initial prenatal care labs, and it returns positive for anti-E antibodies at 1:8. Paternal testing is not an option. The lab reports a critical titer of 1:16. At what antibody titer would you recommend initiation of screening for fetal anemia with middle cerebral artery Doppler studies?

a. 1:8

b. 1:16

c. 1:32

d. 1:64

c Red Cell Alloimmunization

A 36-year-old G3P2 at 28 weeks’ gestation presents as a referral for sonographic abnormalities. On ultrasound fetal pleural effusions, skin edema, and polyhydramnios are noted, as shown below. Which of ...

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