Uncomplicated P. falciparum Malaria: What to Do When the First ACT Course Fails
This protocol addresses uncomplicated P. falciparum malaria in patients where a complete first-line artemisinin-based combination therapy (ACT) course did not achieve full parasite clearance, and a defined second-line approach is now required.
Clinical Scenario
The patient presents with symptoms of malaria and a positive parasitological test — microscopy or rapid diagnostic test (RDT) — with no features of severe malaria. This defines uncomplicated P. falciparum malaria.
Previous Treatment — Failure Condition
A first-line ACT — artemether-lumefantrine, artesunate-amodiaquine, artesunate-mefloquine, dihydroartemisinin-piperaquine, artesunate + sulfadoxine-pyrimethamine, or artesunate-pyronaridine — was completed. The following treatment goals were not reached:
- Elimination of all parasites from the body with resolution of fever and parasitaemia
- No recurrence of fever or parasitaemia within 28 days of treatment
Next-Step Approach (Partial Overview)
Management involves switching to a different artemisinin-based combination therapy — one known to be effective in the region. The specific selection, sequencing, and full clinical decision pathway are available in the complete protocol.
Treatment goal: Elimination of all parasites from the body with resolution of fever and parasitaemia.
References
- A patient who presents with symptoms of malaria and a positive parasitological test (microscopy or RDT) but with no features of severe malaria is defined as having uncomplicated malaria (see section 9.1 for definition of severe falciparum malaria).
- The recommended second-line treatment is an alternative ACT known to be effective in the region.
- "Cure" is defined as elimination of all parasites from the body.
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