Question

A 5-year-old boy is diagnosed with Plasmodium vivax malaria and presents with danger signs (drowsiness, persistent vomiting). What is the most appropriate initial treatment?

• A. IV Artesunate
• B. IV Chloroquine
• C. Oral ACT
• D. Oral Chloroquine

Hint:

Severe malaria (regardless of species: P. falciparum or P. vivax) + Danger signs = Immediate IV Artesunate ($2.4\text{ mg/kg}$ at 0, 12, and 24 hours).

Answer 1

The Correct Option is A

Concept:
Severe malaria can be caused by both Plasmodium falciparum and Plasmodium vivax.
The presence of danger signs (e.g., impaired consciousness/drowsiness, persistent vomiting, severe anemia, jaundice, shock, or respiratory distress) defines complicated/severe malaria and warrants immediate parenteral antimalarial therapy regardless of the species.
Explanation:
• According to World Health Organization (WHO) and National Malaria Guidelines, all cases of severe malaria must be treated urgently with intravenous or intramuscular artesunate as the drug of choice.

• The recommended pediatric dose of IV artesunate is $2.4\text{ mg/kg}$ body weight administered intravenously at 0, 12, and 24 hours, and then once daily until the child can tolerate oral medications.

• Intravenous artesunate rapidly reduces parasitemia, is well-tolerated, and has a significantly superior survival benefit compared to intravenous quinine or chloroquine.

• Oral antimalarials (such as oral ACT or oral chloroquine) are strictly contraindicated as initial therapy in the presence of persistent vomiting and impaired consciousness due to the risk of poor absorption and aspiration.

• Once the patient is clinically stabilized and able to tolerate oral medication, a complete course of oral Artemisinin-based Combination Therapy (ACT) is completed, followed by primaquine (after testing for G6PD deficiency) for radical cure of hypnozoites in P. vivax.
Final Answer:
The drug of choice for the immediate management of severe malaria with danger signs is intravenous (IV) artesunate.