Journal
AMERICAN JOURNAL OF PERINATOLOGY
Volume 27, Issue 10, Pages 775-783Publisher
THIEME MEDICAL PUBL INC
DOI: 10.1055/s-0030-1254240
Keywords
Pregnancy; OTC deficiency; urea cycle disorder
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Ornithine transcarbamylase (OTC) deficiency is the most common enzymatic deficiency in the urea cycle. In catabolic states, such as the intrapartum and immediate postpartum periods, hyperammonemic comas with permanent neurological damage and death can develop. We report six cases of OTC deficiency during pregnancy managed at our institution and review the literature on OTC deficiency during pregnancy. Using the patient database from our Metabolic Clinic, pregnant OTC deficiency carriers were identified. The antenatal, intrapartum, and postpartum periods were analyzed. Corresponding literature was reviewed and an extensive multidisciplinary management plan developed. All six pregnant women had favorable outcomes. No hyperammonemic episodes occurred, and intensive care unit admissions and hemodialysis were not required. Although risk to women with OTC deficiency during the intra- and postpartum period exists, multidisciplinary management and a coherent plan usually result in successful labor, delivery, and postpartum. A comprehensive plan for patients who develop hyperammonemia is recommended.
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