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Sexually Transmitted Infections

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Which of the following does not increase the risk of transmission of syphilis?

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a. Cervical inversion

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b. Cervical hyperemia

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c. Cervical friability

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d. Abrasions of the vaginal mucosa

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The incubation period of syphilis is which of the following?

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a. 1–7 days

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b. 10 days

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c. 3–90 days

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d. 120–180 days

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A 21-year-old G4P2 at 17 weeks’ gestation presents for her first prenatal care visit. She has a history of prostitution, but she denies engaging in such activities for the past month. During examination, a painless lesion is noted on the right labia. A picture of the lesion is provided below. The most likely diagnosis is which of the following?

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Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Sexually transmitted infections. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 65-1.

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a. Chancroid

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b. Primary syphilis

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c. Bartholin gland duct abscess

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d. Herpes simplex virus infection

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A 21-year-old G4P2 at 17 weeks’ gestation presents for her first prenatal care visit. She has a history of prostitution, but she denies engaging in such activities for the past month. During examination, a painless lesion is noted on the right labia. A picture of the lesion is provided below. The best test to perform for the patient to ascertain a definitive diagnosis is which of the following?

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Reproduced with permission from Cunningham FG, Leveno KJ, Bloom SL, et al (eds): Sexually transmitted infections. In Williams Obstetrics, 24th ed. New York, McGraw-Hill, 2014, Figure 65-1.

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a. Rapid plasma reagin (RPR)

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b. Bacterial culture of lesion exudate

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c. Dark-field examination of lesion exudate

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d. Serum assay for herpes simplex virus 1 and 2 antibodies

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