Final answer:
Among the listed congenital anomalies, infantile polycystic kidney disease is not associated with polyhydramnios. Polyhydramnios is related to conditions that affect the fetal swallowing mechanism or result in gastrointestinal obstruction, unlike PKD which affects the kidneys by forming cysts and doesn't directly lead to an excess of amniotic fluid.
Step-by-step explanation:
d. Infantile polycystic kidney disease A congenital anomaly associated with polyhydramnios includes congenital abnormalities that affect the amniotic fluid volume around the fetus. Polyhydramnios is a condition characterized by an excessive amount of amniotic fluid in the amniotic sac. Some congenital anomalies associated with this condition include cystic hygroma, anencephaly, and problems that create difficulties in fetal swallowing or gastrointestinal obstruction, which can lead to an accumulation of amniotic fluid. However, infantile polycystic kidney disease (PKD) is characterized by the formation of multiple abnormal cysts that develop and grow in the kidneys.
This genetic disorder typically affects both kidneys and can lead to symptoms like high blood pressure and abdominal pain but not directly to polyhydramnios. Therefore, the answer to the question, 'Congenital anomalies associated with polyhydramnios include all of the following except,' is d. Infantile polycystic kidney disease. Coarctation of the aorta is indeed a congenital heart defect and is characterized by the abnormal narrowing of the aorta, which can be associated with polyhydramnios as it may lead to heart failure and hence an overproduction of amniotic fluid by the fetus.