**Question:** A 28 weeks pregnant primigravida, presented with intermittent fever with chills, headache and myalgia. Peripheral smear shows malarial parasites. All of the following medicines can be given to this patient, EXCEPT:

A. Saline
B. Morphine
C. Oxytocin
D. Amphotericin B

**Core Concept:** Malaria is a parasitic infection caused by Plasmodium species, mainly transmitted through the bite of infected Anopheles mosquitoes. Clinical manifestations include fever, chills, headache, and myalgia. In severe cases, hypertension, acute kidney injury, respiratory distress, and disseminated intravascular coagulation (DIC) can occur. Malarial parasites are visible in a peripheral blood smear as trophozoites and schizonts.

**Why the Correct Answer is Right:** The correct answer is **D** Amphotericin B, as it is an antifungal agent used to treat severe fungal infections, such as cryptococcal meningitis, asparaginase-induced sepsis, or candidemia. Amphotericin B is not effective against Plasmodium species, the causative organism of malaria.

**Why Each Wrong Option is Incorrect:**

**A.** Saline (isotonic saline) is a normal saline solution used for rehydration, electrolyte replacement, and maintaining osmotic balance in patients with fluid and electrolyte imbalances. It does not have any direct effect on Plasmodium species or the clinical symptoms of malaria.

**B.** Morphine is a potent opioid analgesic used for pain management. It does not address the underlying malaria infection or its symptoms.

**C.** Oxytocin is a hormone used to induce or augment uterine contractions in labor and delivery. It is unrelated to the treatment of malaria and does not target the Plasmodium parasite.

**Clinical Pearls and Pitfalls:**

1. **Clinical Pearls:** In malaria cases, the appropriate treatment involves antimalarial drugs like quinine, chloroquine, or artesunate. These drugs target the Plasmodium parasite and alleviate the symptoms.

2. **Clinical Pitfalls:** Mismanagement of malaria can lead to severe complications like cerebral malaria, acute respiratory distress syndrome (ARDS), and acute kidney injury (AKI). Timely diagnosis and appropriate antimalarial treatment are crucial for preventing complications and improving patient outcomes.

3. **Clinical Pearls:** Regular follow-ups after treatment ensure the parasite has been eradicated and there are no relapses.

4. **Clinical Pitfalls:** Over-reliance on supportive care without addressing the underlying infection can lead to prolonged hospital stays, increased morbidity, and mortality.