Which among the following can cause congenital hea block?
**Core Concept**
Congenital heart block refers to an abnormality in the conduction system of the heart present at birth. It involves a blockage or delay in the electrical impulses that control the heartbeat. This condition can be associated with various maternal and fetal factors.
**Why the Correct Answer is Right**
The correct answer is related to the presence of autoantibodies in the mother, which can cross the placenta and affect the fetal heart. Specifically, **Systemic Lupus Erythematosus (SLE)** and **Sjögren's syndrome** are autoimmune diseases that can increase the risk of congenital heart block. These autoantibodies can target the fetal conduction system, leading to inflammation and scarring, which disrupts the normal electrical conduction pathways.
**Why Each Wrong Option is Incorrect**
**Option A:** This choice is incorrect because, while it may be related to heart disease, it is not a primary cause of congenital heart block.
**Option B:** Similarly, this option is not directly linked to congenital heart block.
**Option C:** This choice is also incorrect as it does not have a direct association with the condition.
**Why Each Wrong Option is Incorrect** for options B and C are not provided as the question is incomplete.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that mothers with a history of autoimmune diseases, particularly those with **anti-SSA/Ro** and **anti-SSB/La** antibodies, are at higher risk of having a child with congenital heart block.
**Correct Answer:** D. Systemic Lupus Erythematosus.