Intrauterine Fetal and Neonatal Death between Small for Date and Non-Small for Date in Small for Gestational Age Infants 4

• Material Type: 博士論文
• ISSN: 1449-1907
• Title: Intrauterine Fetal and Neonatal Death between Small for Date and Non-Small for Date in Small for Gestational Age Infants
• Volume: 16 4
• Author/Editor: 伊藤, 敏谷
• Author Heading: 伊藤, 敏谷
• Publication, Distribution, etc.: Ivyspring International Publisher
• Publication Date: 2019-03-09
• Publication Date (W3CDTF): 2019-03-09
• Alternative Title: 在胎不当過小児を母集団とし、Small for date（SFD）児ならびに非SFD児の二群間における子宮内胎児死亡と新生児死亡の比較検討
• Periodical title: International Journal of Medical Sciences
• Degree grantor/type: 浜松医科大学
• Date Granted: 2021-03-16
• Date Granted (W3CDTF): 2021-03-16
• Dissertation Number: 甲第858号
• Degree Type: 博士（医学）
• Conferring No. (Dissertation): 甲第858号
• Text Language Code: eng
• Subject Heading: small for gestational age; small for date; fetal/placental weight ratio; placenta; intrauterine fetal death; neonatal death
• Target Audience: 一般
• Note (General): doctoral; 医学系研究科; Objective: To demonstrate the differences in intrauterine fetal deaths and neonatal deaths between small for date (SFD) and Non-SFD neonates by applying a novel classification from both Z scores of placental weight (PW) and fetal/placental weight ratio (F/P) to small for gestational age (SGA) neonates.Methods: From 93,034 placentas/infants of mothers who vaginally delivered a singleton infant (Japan Perinatal Registry Network database 2013), SGA (n=7,780) was chosen according to the reference to Japanese neonatal growth chart. They were divided into two subgroups: SFD (body weight and height less than the 10th percentile, n=3,379) and Non-SFD (only body weight less than the 10th percentile, n=4,401). Z scores of PW and F/P based on the standard curves for sex-, parity-, and gestational-age-specific PW and F/P were calculated. The population was classified into 9 groups according to the combination of ‘low vs. middle vs. high’ i) PW Z score and ii) F/P Z score. In both i) and ii), ± 1.28 standard deviations in the Z scores were used for classifying low vs. middle vs. high, with 3×3 making 9 groups. From top-left to bottom-right, we labeled the groups as Group A to Group I.Results: SFD and Non-SFD neonates distributed in the same 6 groups (A, D, E, G, H, I). In group E, which was considered to be balanced placental and infant growth, the incidence of intrauterine fetal death was significantly higher in Non-SFD neonates than in SFD neonates. In group D, which was considered to be small placenta and balanced infant growth, the incidence of neonatal death was significantly higher in SFD neonates than in Non-SFD neonates.Conclusion: Assessment of SGA neonates by dividing them into SFD and Non-SFD neonates and application of a 9-group classification by PW and F/P Z scores were informative to understand the pathophysiological involvement of an imbalance between placental and fetal sizes.
• DOI: info:doi/10.7150/ijms.31153; https://doi.org/info:doi/10.7150/ijms.31153
• Persistent ID (NDL): info:ndljp/pid/11720306; https://dl.ndl.go.jp/pid/11720306
• Collection: 障害者向け資料
• Collection (Materials For Handicapped People:1): テキストデータ
• Collection (particular): 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• Acquisition Basis: 博士論文（自動収集）
• Date Accepted (W3CDTF): 2021-09-06T03:11:00+09:00
• Date Created (W3CDTF): 2021-07-20
• Format (IMT): application/pdf
• Access Restrictions: 国立国会図書館内限定公開
• Service for the Digitized Contents Transmission Service: 図書館・個人送信対象外
• Availability of remote photoduplication service: 可
• Periodical Title (URI): http://hdl.handle.net/10271/00003869; https://hama-med.repo.nii.ac.jp/records/3743
• Data Provider (Database): 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

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