Safest antimalarial drug during pregnancy is ?
**Core Concept**
The safety of antimalarial drugs during pregnancy is crucial due to the potential risks of teratogenicity and fetal harm. The ideal antimalarial for pregnant women should have a proven track record of efficacy and safety, with minimal risk of adverse effects on the fetus.
**Why the Correct Answer is Right**
The safest antimalarial drug during pregnancy is **chloroquine**. This is because chloroquine has been extensively used for decades, and its safety and efficacy have been well-established in pregnant women. Chloroquine acts by interfering with hemoglobin binding to the parasite, which ultimately leads to the parasite's death. The drug is also lipophilic, which allows it to easily cross the placenta, providing adequate levels of the drug to the fetus.
**Why Each Wrong Option is Incorrect**
* **Option A:** **Quinine** is not the safest option during pregnancy due to its potential to cause hypoglycemia, which can be particularly problematic in pregnant women with pre-existing glucose intolerance. Additionally, quinine can also cause maternal and fetal hypotension.
* **Option B:** **Mefloquine** is not recommended during the first trimester of pregnancy due to concerns about its potential teratogenic effects. While it can be used during the second and third trimesters, its safety profile is not as well-established as chloroquine.
* **Option C:** **Amodiaquine** is not considered safe during pregnancy due to its potential to cause agranulocytosis, a potentially life-threatening side effect.
**Clinical Pearl / High-Yield Fact**
It's essential to note that the World Health Organization (WHO) recommends the use of chloroquine as the first-line treatment for malaria in pregnant women, particularly in areas where the parasite is resistant to chloroquine.
**Correct Answer: C. Chloroquine.**