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Inherited Metabolic Diseases (IMDs) and Pregnancy 

Inherited Metabolic Diseases (IMDs) and Pregnancy
Chapter:
Inherited Metabolic Diseases (IMDs) and Pregnancy
Author(s):

Ahmed I. Ahmed

, Sarah Aldhaheri

, and Allison Bannick

DOI:
10.1093/med/9780190667351.003.0030
Page of

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date: 08 March 2021

Inherited metabolic diseases (IMDs) are rare genetic disorders: clinically heterogeneous, and they can present at any age. With the expanded newborn screening panels, many of the IMDs have been successfully screened. Early diagnosis and treatment of these conditions have led to improved neurological outcomes and overall survival of these individuals, and now many of them are reaching childbearing age. Despite treatment, the potential presence of preexisting organ involvement may not only impact their fertility potentials but also may impose a higher risk of adverse maternal and fetal outcomes. Pregnancy leads to an extra strain on maternal metabolism; this may result in the manifestation of symptoms of a previously unknown disease or a progression of a known disease. This chapter will address the possible complications of some inherited disorders of metabolism that are associated with maternal or fetal neurological manifestations such as disorders of energy metabolism (eg, mitochondrial disorders, adult onset urea cycle disorders, ornithine transcarbamylase (OTC) deficiency, amino acidopathies, phenylketonuria (PKU), and impaired fatty acid oxidation disorders). We will provide special emphasis on the available potential treatments and plan of care during pregnancy and postpartum periods.

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