Most common complication of splenectomy is ?
**Core Concept**
Splenectomy, or the surgical removal of the spleen, can lead to various complications due to the spleen's role in filtering the blood, storing red blood cells, and participating in the immune response. The most common complication of splenectomy is related to the body's increased susceptibility to infections, especially those caused by encapsulated bacteria.
**Why the Correct Answer is Right**
The correct answer is related to the spleen's function in filtering the blood and its role in the immune response. The spleen is responsible for removing old, damaged red blood cells and filtering out bacteria and other particles from the blood. Without the spleen, the body's ability to fight off infections is compromised, particularly those caused by encapsulated bacteria such as Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis. This increased susceptibility to infections is the most common complication of splenectomy.
**Why Each Wrong Option is Incorrect**
**Option A:** Postoperative hemorrhage is a possible complication of splenectomy, but it is not the most common complication. Hemorrhage can occur due to the rich vascular supply of the spleen, but it is relatively rare compared to infections.
**Option B:** Pancreatitis is a potential complication of splenectomy, particularly if the splenic vessels are injured during surgery. However, pancreatitis is not the most common complication of splenectomy.
**Option C:** Thrombocytosis, or an increase in platelet count, can occur after splenectomy due to the removal of the spleen's platelet-filtering function. However, thrombocytosis is not the most common complication of splenectomy.
**Clinical Pearl / High-Yield Fact**
The most common complication of splenectomy is an increased susceptibility to infections, particularly those caused by encapsulated bacteria. This is why patients who have undergone splenectomy are often given prophylactic antibiotics before undergoing medical procedures, such as dental work, and are vaccinated against encapsulated bacteria.
**Correct Answer: A. Infections, particularly those caused by encapsulated bacteria.**