You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is For TOF management in antenatal period includes ? and explain in detail?
Ans. is 'c' i.e., KaryotypingTOF has been associated with untreated maternal diabetes, phenylketonuria, and intake of retinoic acid.Associated chromosomal anomalies occur in 30% cases and include trisomies 21, 18, 13 and 22q11 microdeletion, especially in pulmonary atresia and absent pulmonary valve syndrome (APVS).There is also a high association with extra - cardiac anomalies in paicular, abdominal and thoracic abnormalities.When a TOF is diagnosed during fetal life, karyotyping and targeted morphologic ultrasound examination should be offered.Isolated TOF - Good prognosis in TOF with pulmonary stenosis (>90% survival after surgery).However, other forms of TOF such as pulmonary atresia and absent pulmonary valve syndrome do not have a good prognosis (moderate prognosis for pulmonary atresia and bad prognosis for APVS).