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Identifies monochorionic diamniotic twin gestations as a risk factor for congenital heart defects, highlighting the clinical utility of routine fetal echocardiography.
Monochorionic/diamniotic twin gestation appears to be a risk factor for CHDs. Conditions that lead to abnormal placentation may also contribute to abnormal heart development, especially in MC/DA twin pregnancies complicated with TTTS. Fetal echocardiography may be considered for all MC/DA twin gestations because ventricular septal defects and pulmonary stenosis are the most common defects.
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Bahtiyar et al. (2007) studied this question.
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