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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Low birth weight ： ウィキペディア英語版 Low birth weight Low birth weight (LBW) is defined as a birth weight of a liveborn infant of less than 2,500 g (5 pounds 8 ounces) regardless of gestational age.〔(P07 - Disorders related to short gestation and low birth weight ) in ICD-10〕 Subcategories include very low birth weight (VLBW), which is less than 1500 g (3 pounds 5 ounces), and extremely low birth weight (ELBW), which is less than 1000 g (2 pounds 3 ounces).〔(【引用サイトリンク】title=eMedicine - Extremely Low Birth Weight Infant : Article by KN Siva Subramanian, MD )〕 Normal weight at term delivery is 2500–4200 g (5 pounds 8 ounces – 9 pounds 4 ounces). ==Causes== LBW is either caused by preterm birth (that is, a low gestational age at birth, commonly defined as younger than 37 weeks of gestation) or the infant being small for gestational age (that is, a slow prenatal growth rate), or a combination of both. In general, risk factors in the mother that may contribute to low birth weight include young ages, multiple pregnancies, previous LBW infants, poor nutrition, heart disease or hypertension, drug addiction, alcohol abuse, and insufficient prenatal care. Environmental risk factors include smoking, lead exposure, and other types of air pollutions. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Low birth weight」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.