In pregnancy, which regimen is appropriate for treating bacterial vaginosis when topical therapy is preferred?

• A. Metronidazole gel 0.75% daily for 5 days
• B. Oral metronidazole 500 mg twice daily for 7 days
• C. Clindamycin oral
• D. Miconazole cream

Answer: (A)

Topical therapy is favored in pregnancy for BV because it targets the infection locally with minimal fetal exposure. Metronidazole vaginal gel 0.75% applied daily for five days delivers high vaginal concentrations while keeping systemic levels low, making it an effective option without unnecessary fetal exposure. Options that involve systemic (oral) therapy—like oral metronidazole or oral clindamycin—expose the fetus to the drug, which is less desirable when a topical alternative exists. Miconazole cream treats yeast infections, not BV, so it isn’t appropriate. Thus, the vaginal metronidazole gel regimen is the best choice when topical therapy is preferred.