TY - CHAP M1 - Book, Section TI - Neural Tube Defects A1 - Gomella, Tricia Lacy A1 - Eyal, Fabien G. A1 - Bany-Mohammed, Fayez Y1 - 2020 N1 - T2 - Gomella's Neonatology: Management, Procedures, On-Call Problems, Diseases, and Drugs, 8e AB - Neural tube defects (NTDs) are malformations of the developing brain and spinal cord. In normal development, the closure of the neural tube occurs over a 4- to 6-day period with completion around the 29th day postconception, often before a woman has realized that she is pregnant. Most current hypotheses consider NTDs to be defects from failure of a neural tube closure rather than the reopening of a previously closed tube. The nomenclature for NTDs is not standardized; frequently used terms are as follows: SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/11/08 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1168358073 ER -