Drug of choice in pregnant women with Secondary Syphilis is?
**Core Concept**
Secondary syphilis is a systemic infection caused by the bacterium Treponema pallidum, characterized by widespread rash, fever, and lymphadenopathy. In pregnant women, secondary syphilis can lead to congenital syphilis in the fetus, resulting in severe health consequences.
**Why the Correct Answer is Right**
The treatment of secondary syphilis in pregnant women is penicillin, specifically benzathine penicillin G. This is because penicillin is effective against Treponema pallidum and can cross the placenta to treat the fetus. The recommended regimen is a single dose of 2.4 million units of benzathine penicillin G administered intramuscularly. This ensures the elimination of the infection in both the mother and the fetus, preventing the transmission of syphilis to the newborn.
**Why Each Wrong Option is Incorrect**
**Option A:** Tetracycline is contraindicated in pregnancy due to the risk of inhibiting bone growth and causing tooth discoloration in the fetus.
**Option B:** Erythromycin is not the preferred treatment for syphilis in pregnant women, as it is less effective than penicillin and may not eradicate the infection.
**Option C:** Ceftriaxone is a cephalosporin antibiotic that is effective against some bacterial infections, but it is not the preferred treatment for syphilis in pregnancy due to concerns about resistance and efficacy.
**Clinical Pearl / High-Yield Fact**
In pregnant women with syphilis, it is essential to perform a thorough physical examination, including a review of the mother's sexual history and a complete blood count to assess for any signs of infection.
**Correct Answer: D. Benzathine penicillin G**