fetal condition

What Birth Defects Cannot Be Detected During Pregnancy?

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What Birth Defects Cannot Be Detected During Pregnancy? These tests cannot detect all possible conditions, but can often identify: chromosomal conditions, such as Down syndrome, Trisomy 13 and Trisomy 18. some birth defects such as congenital heart conditions and malformed kidneys. How do doctors test for birth defects? Screening tests for birth defects are blood

What Are The Two Main Causes Of Congenital Birth Defects?

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What Are The Two Main Causes Of Congenital Birth Defects? Approximately 50% of congenital anomalies cannot be linked to a specific cause. However, known causes include single gene defects, chromosomal disorders, multifactorial inheritance, environmental teratogens and micronutrient deficiencies. Genetic causes can be traced to inherited genes or from mutations. What causes a congenital birth defect?