Malaria: an important emergency room diagnosis
Canadian Family Physician Medecin De Famille Canadien
|January 29, 2011
Summary
Malaria is a serious medical emergency for travellers returning from endemic areas. Even with prophylaxis, Plasmodium falciparum infection can occur, requiring prompt emergency treatment.
Area of Science:
- Tropical Medicine
- Infectious Diseases
- Public Health
Background:
- Malaria is a globally prevalent communicable disease, posing a significant risk to international travellers.
- Fever in a returning traveller from an endemic zone necessitates immediate medical evaluation as a potential medical emergency.
- Chemoprophylaxis does not guarantee prevention and can delay diagnosis of malaria.
Purpose of the Study:
- To highlight the critical nature of diagnosing and treating Plasmodium falciparum in returning travellers.
- To illustrate a case of malaria with failed prophylaxis presenting to the emergency room.
- To emphasize the importance of considering malaria despite negative initial diagnostic tests.
Main Methods:
- Case report detailing clinical presentation, emergency room management, and treatment of Plasmodium falciparum.
- Review of potential delayed presentation due to chemoprophylaxis.
- Discussion of diagnostic challenges, including the limitations of a single negative blood film.
Main Results:
- The case demonstrates a Plasmodium falciparum infection despite attempted prophylaxis.
- Clinical manifestations can be delayed for up to six months post-travel.
- A single negative blood film does not rule out malaria, necessitating further investigation.
Conclusions:
- Fever in travellers from malaria-endemic regions is a medical emergency requiring urgent diagnosis and treatment.
- Plasmodium falciparum can present atypically or with delayed onset, even with prophylaxis.
- Healthcare providers must maintain a high index of suspicion for malaria in febrile returning travellers.
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