The investigation of the relationship between the pelvic sacral angle(PSA)and relaxin during pregnancy.

• Project/Area Number: 26670983
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Lifelong developmental nursing
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: ADACHI KUMIKO 首都大学東京, 人間健康科学研究科, 教授 (30336846)
• Research Collaborator: NISHIUCHI Yuri ; TOKUMATSU Natsuki ; Hishinuma Yuri
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 恥骨結合上端開角 / リラキシン / 尿中リラキシン / 恥骨結合上端部開角 / 妊婦 / 妊娠 / 骨盤

Outline of Final Research Achievements

The purpose of this study is that conducted the pelvic sacral angle (PSA)measurements using the ultrasonic tomographic method and urine relaxin measurements, and the investigation of the relationship between PSA and relaxin during pregnancy. First survey was conducted in women who were not pregnant and had not experienced child birth. We conducted PSA measurements using the ultrasonic tomographic method.A stable PSA value was obtained when the two upper ends of the pubis and the pubic symphysis were clearly visible. Second survey was conducted PSA measurements and urine relaxin measurements　during from the early stages of pregnancy until the puerperal period. There was no significant difference in urine relaxin between measurements at the different period of time. Although, relaxin has a relaxing effect on the pubic symphysisa, the PSA was related neither to relaxin nor to the pregnancy/delivery process.

Research Products

• [Presentation] Variations in Urinary Relaxin Levels During Pregnancy (2018)
  • Author(s): Kumiko Adachi, Natsuki Tokumatsu, Yuri Hishinuma
  • Organizer: 21ｓt East Asian Forum of Nursing Scholars
  • Int'l Joint Research
• [Presentation] Tentative Pubic symphyseal Angle（PSA）Method Using Ultrasound Imaging Devices to Monitor Pelvic Changes (2018)
  • Author(s): Natsuki Tokumatsu, Kumiko Adachi
  • Organizer: 21ｓt East Asian Forum of Nursing Scholars
  • Int'l Joint Research
• [Presentation] 未分娩女性の恥骨結合上端部開角（PSA）測定の試み (2016)
  • Author(s): 西内友里、安達久美子
  • Organizer: 第30回日本助産学会学術集会
  • Place of Presentation: 京都大学国際科学イノベーション棟（京都府・京都市）
  • Year and Date: 2016-03-20
• [Presentation] 恥骨結合上端部開角（PSA）と骨盤外計測値の関連 (2016)
  • Author(s): 安達久美子、西内友里
  • Organizer: 第30回日本助産学会学術集会
  • Place of Presentation: 京都大学国際科学イノベーション棟（京都府・京都市）
  • Year and Date: 2016-03-19