**Core Concept**
Plasmodium falciparum is a species of Plasmodium that causes the deadliest form of malaria, characterized by severe anemia and complications due to hemolysis. The parasite's ability to adhere to the endothelium of small blood vessels and sequester in the microvasculature contributes to its pathogenicity.
**Why the Correct Answer is Right**
The severe hemolysis associated with P. falciparum infection is primarily due to the parasite's ability to invade and destroy red blood cells (RBCs) at a faster rate than other Plasmodium species. This is attributed to the parasite's high rate of replication, which leads to a significant increase in the number of parasites within the RBCs. Furthermore, P. falciparum's ability to sequester in the microvasculature leads to the formation of microvascular occlusions, resulting in ischemia and tissue damage.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely incorrect because it does not provide a specific mechanism for the severe hemolysis associated with P. falciparum infection.
**Option B:** While P. vivax is known to cause relapses, it is not typically associated with severe hemolysis.
**Option C:** P. malariae is known to cause quartan malaria, but it is not typically associated with severe hemolysis.
**Option D:** This option is incomplete and does not provide a valid explanation for the severe hemolysis associated with P. falciparum infection.
**Clinical Pearl / High-Yield Fact**
P. falciparum's ability to sequester in the microvasculature makes it a prime candidate for the use of antimalarial medications that target the parasite's ability to adhere to the endothelium, such as artemisinin-based combination therapies.
**Correct Answer:** C.
Free Medical MCQs Β· NEET PG Β· USMLE Β· AIIMS
Access thousands of free MCQs, ebooks and daily exams.
By signing in you agree to our Privacy Policy.