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Difficulty: MediumGynecologic Infections

Seeking evaluation for vaginal discomfort, a 23-year-old university student comes to the campus health center. She has experienced a malodorous discharge and mild vulvar itching for the past seven days. The patient reports these symptoms started shortly after she initiated a sexual relationship with a new male partner. Her medical history is unremarkable, and she takes no routine medications. Her vital signs are within normal limits. Pelvic examination displays mild vulvar erythema and a copious, frothy, yellow-green fluid pooled in the posterior vaginal fornix. The exocervix demonstrates multiple small, punctate hemorrhages. Vaginal fluid pH is measured at 6.26.2. Microscopic analysis of a saline wet mount reveals an abundance of polymorphonuclear leukocytes alongside actively motile, flagellated protozoa. Which of the following is the most appropriate management plan for this patient?

  1. Administration of oral metronidazole for both the patient and her sexual partnerAnswer
  2. B
    Administration of oral metronidazole for the patient only
  3. C
    Administration of vaginal metronidazole gel for the patient only
  4. D
    Administration of intramuscular ceftriaxone and oral doxycycline for both the patient and her sexual partner
  5. E
    Administration of single-dose oral fluconazole for the patient only

Answer

The most appropriate management is the administration of oral metronidazole for both the patient and her sexual partner.
The patient's presentation of a frothy, yellow-green, malodorous discharge, a 'strawberry cervix' (punctate cervical hemorrhages), a vaginal pH greater than 4.54.5, and motile flagellated protozoa on wet mount is definitively diagnostic of Trichomonas vaginalis infection. Trichomoniasis is a sexually transmitted infection. The most appropriate management is to provide systemic treatment with an oral nitroimidazole, such as metronidazole, for the patient. Because Trichomonas is sexually transmitted and has a high rate of reinfection if partners remain untreated, it is essential that all recent sexual partners receive concurrent empiric treatment, and they should abstain from intercourse until both have completed therapy and are completely asymptomatic.

Step-by-Step Solution

1
Analyze the clinical presentation and microscopic findings to establish a diagnosis.
The combination of a frothy, yellow-green discharge, a 'strawberry cervix' (punctate hemorrhages), an elevated pH (6.26.2), and motile flagellated organisms confirms the diagnosis of Trichomonas vaginalis infection.
Identifying the specific pathogen is essential before selecting targeted antimicrobial therapy.
2
Determine the appropriate route of pharmacological therapy.
Systemic therapy with an oral nitroimidazole (e.g., metronidazole) is required.
Trichomonas frequently colonizes the urethra and perivaginal glands (Skene and Bartholin), where topical vaginal therapies cannot reach therapeutic concentrations.
3
Apply public health and partner management protocols.
Concurrent treatment of all recent sexual partners is mandatory.
Trichomoniasis is a highly contagious sexually transmitted infection; treating only the index patient leads to rapid reinfection when intercourse resumes.

Key Concept

Trichomoniasis is a sexually transmitted infection requiring systemic oral therapy (such as metronidazole) and concurrent partner treatment to prevent reinfection.
Estimated Time:1m 0s
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Topics

Gynecologic Infections

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