Which is not a feature of cerebral malaria
**Core Concept**
Cerebral malaria is a severe complication of Plasmodium falciparum infection, characterized by the sequestration of infected erythrocytes in the cerebral microvasculature. This leads to impaired blood flow and tissue damage in the brain. The pathophysiology involves the binding of infected erythrocytes to the endothelial walls of small blood vessels, which causes the obstruction of blood flow and the resulting cerebral edema.
**Why the Correct Answer is Right**
The correct answer is that cerebral malaria is characterized by the presence of coma, seizures, and altered mental status. This is due to the sequestration of infected erythrocytes in the cerebral microvasculature, which leads to impaired blood flow and tissue damage in the brain. The binding of infected erythrocytes to the endothelial walls of small blood vessels triggers an inflammatory response, which contributes to the development of cerebral edema. The combination of impaired blood flow and tissue damage results in the characteristic symptoms of cerebral malaria.
**Why Each Wrong Option is Incorrect**
* **Option A:** Cerebral malaria is indeed associated with the presence of coma, seizures, and altered mental status. Therefore, this option is incorrect.
* **Option B:** Cerebral malaria is not typically characterized by the presence of respiratory distress. While respiratory failure can occur in severe malaria, it is not a specific feature of cerebral malaria.
* **Option C:** Cerebral malaria is associated with the presence of jaundice, which is a common symptom of malaria due to the breakdown of infected erythrocytes.
* **Option D:** Cerebral malaria is indeed associated with the presence of renal failure, which can occur due to the impaired blood flow and tissue damage in the brain.
**Clinical Pearl / High-Yield Fact**
Cerebral malaria is a medical emergency that requires prompt recognition and treatment. The presence of coma, seizures, and altered mental status in a patient with malaria should raise suspicion for cerebral malaria, and prompt investigation and treatment are essential to prevent long-term neurological sequelae.
**Correct Answer:** B. Cerebral malaria is not typically characterized by the presence of respiratory distress.