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Question

Difficulty: MediumGynecologic Infections

An adolescent primigravida at 15 weeks gestation is evaluated in the outpatient clinic for a 3-day history of thick, yellow vaginal discharge and mild burning during urination. She denies lower abdominal discomfort, nausea, vomiting, or fever. Her vital signs are within normal limits. Speculum examination reveals a grossly erythematous cervix that bleeds easily upon contact with a swab. Copious mucopurulent exudate is visible at the external cervical os. Bimanual palpation elicits no cervical motion tenderness, and the adnexa are non-tender. Fetal heart tones are reassuring. A point-of-care urinalysis is unremarkable. The clinician prepares to send an endocervical sample for nucleic acid amplification testing. Which of the following is the most appropriate empiric management for this patient?

  1. Ceftriaxone intramuscularly and azithromycin orallyAnswer
  2. B
    Ceftriaxone intramuscularly and doxycycline orally
  3. C
    Cefoxitin intravenously and azithromycin orally
  4. D
    Metronidazole orally
  5. E
    Azithromycin orally

Answer

Ceftriaxone intramuscularly and azithromycin orally
The correct answer provides targeted empiric coverage for both Neisseria gonorrhoeae (with intramuscular ceftriaxone) and Chlamydia trachomatis (with oral azithromycin). This patient presents with classic signs of acute cervicitis, including a friable cervix (bleeds easily on contact) and mucopurulent endocervical exudate. Because she is symptomatic and pregnant, empiric treatment is indicated to prevent ascending infection and adverse obstetric outcomes. Both ceftriaxone and azithromycin have favorable safety profiles in pregnancy.

Step-by-Step Solution

1
Identify the clinical syndrome based on the physical examination findings.
The patient has mucopurulent discharge and a friable cervix without cervical motion or adnexal tenderness, indicating acute cervicitis rather than pelvic inflammatory disease.
Differentiating lower genital tract infections (cervicitis) from upper genital tract infections (PID) determines the required intensity and route of therapy.
2
Determine the most common etiologic agents for this clinical presentation.
Chlamydia trachomatis and Neisseria gonorrhoeae are the most common causes of acute mucopurulent cervicitis.
Symptomatic pregnant patients require immediate empiric therapy targeting these pathogens to prevent obstetrical complications, such as premature rupture of membranes.
3
Select an appropriate antimicrobial regimen that is safe for a pregnant patient.
Ceftriaxone provides coverage for gonorrhea, and azithromycin provides coverage for chlamydia. Both are safe in pregnancy.
Standard non-pregnant regimens containing tetracyclines (like doxycycline) must be avoided due to known teratogenicity.

Key Concept

Diagnosis and empiric treatment of acute cervicitis in pregnancy requires dual coverage for gonorrhea and chlamydia using non-teratogenic antibiotics (ceftriaxone and azithromycin).
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Topics

Gynecologic Infections

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