Which heart diseases are most commonly associated with rubella infection –
**Core Concept**
Rubella infection, also known as German measles, is a viral illness that can have serious consequences for the developing fetus if a pregnant woman contracts the infection. Congenital rubella syndrome (CRS) is a condition that occurs when the virus is transmitted from the mother to the fetus, leading to various congenital anomalies.
**Why the Correct Answer is Right**
Rubella infection can cause congenital heart defects, particularly patent ductus arteriosus (PDA) and pulmonary artery stenosis. This occurs due to the virus's effect on the developing heart, leading to abnormal heart development and function. CRS can also cause other congenital anomalies, such as cataracts, hearing loss, and intellectual disability. The exact mechanisms of how rubella virus causes congenital heart defects are not fully understood, but it is thought to involve the virus's interaction with the developing fetal heart tissue.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while rubella infection can cause various congenital anomalies, it is not commonly associated with aortic stenosis.
**Option B:** This option is incorrect because although rubella infection can cause cardiac defects, it is not commonly associated with hypertrophic cardiomyopathy.
**Option C:** This option is incorrect because while rubella infection can cause congenital anomalies, it is not commonly associated with Eisenmenger syndrome.
**Clinical Pearl / High-Yield Fact**
Rubella infection during pregnancy is a well-known cause of congenital heart defects, particularly patent ductus arteriosus. It is essential for pregnant women to be vaccinated against rubella to prevent congenital rubella syndrome.
**Correct Answer:** C. Pulmonary artery stenosis