Congenital rubella syndrome (CRS) is a condition that occurs in an infant whose mother was infected with the rubella virus during pregnancy. The classic "triad" of symptoms associated with CRS includes the following key features:
- Patent Ductus Arteriosus (PDA): This is a heart defect that results in the persistent opening between the aorta and pulmonary artery.
- Cataract: Congenital cataracts occur as a result of rubella infection in the pregnant mother, leading to cloudy or opaque lenses in the baby.
- Deafness: Sensorineural hearing loss is a common symptom and may severely impact the child's ability to hear.
Given these characteristics, the correct answer to the question about the triad of congenital rubella syndrome is: PDA, cataract and deafness is seen.