Blood pressure trajectories during pregnancy, labor, and postpartum period: a multicenter study in Japan
Takafumi Ushida, Takuma Shimaya, Tatsuo Inamura, Satoru Katsuki, Sho Tano, Seiko Matsuo, Kazuya Fuma, Shigeru Yoshida, Mamoru Yamashita, Hiroaki Kajiyama · 2026
Read Blood pressure trajectories during pregnancy, labor, and postpartum period: a multicenter study in Japan by Takafumi Ushida, Takuma Shimaya, Tatsuo Inamura, Satoru Katsuki, Sho Tano, Seiko Matsuo, Kazuya Fuma, Shigeru Yoshida, Mamoru Yamashita, Hiroaki Kajiyama (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13437242.txt.
Description
Takafumi Ushida and co-authors charted how blood pressure moves across pregnancy, labor, and the weeks after birth in healthy women. Their 2026 study covered 14,240 low-risk women who delivered single babies at term across twelve Japanese sites. Clinic readings were modeled over time, pre-pregnancy levels estimated from matched non-pregnant women, and labor readings came from 11,836 vaginal births.
Pressure followed the classic curve, dipping lowest near week twenty-five and rising toward term. Early pregnancy readings already sat above the estimated pre-pregnancy level. During the first stage of labor, the top pressure number rose by as much as about sixteen points, then settled within two hours of delivery. After birth, pressure climbed again, peaked around days five to seven, and eased back by about five weeks. The authors offer these curves as a normal reference, so doctors can tell harmless shifts from early signs of a pressure disorder.
Catalog record
| CREATOR | Takafumi Ushida, Takuma Shimaya, Tatsuo Inamura, Satoru Katsuki, Sho Tano, Seiko Matsuo, Kazuya Fuma, Shigeru Yoshida, Mamoru Yamashita, Hiroaki Kajiyama |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 39288 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |