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Journal of Clinical Hypertension, volume 27, issue 1

Pregnancy and Postpartum Trends in Self‐Measured Blood Pressure and Derived Indices: The BOSHI Study

Seiya Izumi 1, 2
, 
Misato Nishimura 2
, 
Noriyuki Iwama 1, 3
, 
Hasumi Tomita 1
, 
Hirotaka Hamada 1
, 
Taku Obara 3, 4, 5
, 
Mami Ishikuro 3, 4
, 
Takahisa Murakami 2, 3
, 
Michihiro Satoh 2, 3, 6
, 
Takuo Hirose 7
, 
Masatoshi Saito 1, 8
, 
Takayoshi Ohkubo 9, 10
, 
Shinichi Kuriyama 3, 4, 11, 12
, 
Nobuo Yaegashi 12
, 
Kazuhiko Hoshi 13
, 
YUTAKA IMAI 10
, 
Hirohito Metoki 2, 3, 10, 12
1
 
2
 
3
 
4
 
5
 
6
 
7
 
8
 
9
 
10
 
Tohoku Institute for Management of Blood Pressure Sendai Miyagi Japan | 
11
 
12
 
13
 
Suzuki Memorial Hospital Iwanuma Miyagi Japan | 
Publication type: Journal Article
Publication date: 2025-01-17
scimago Q2
wos Q2
SJR: 0.707
CiteScore: 5.8
Impact factor: 2.7
ISSN: 15246175, 17517176
Abstract
ABSTRACT

In this study, we aimed to reveal the trends of self‐measured blood pressure (SMBP) and SMBP‐derived indices during pregnancy and the postpartum period. The Babies and Their Parents Longitudinal Observation in Suzuki Memorial Hospital in the Intrauterine Period (BOSHI) Study is a prospective cohort study in Japan. Participants were instructed to measure SMBP daily during pregnancy and for 1 month after delivery. Among 237 participants with normotensive blood pressure (BP) during pregnancy and the postpartum period who were analyzed using mixed‐effects models for repeated measures, the SMBP was measured, on average, 14.3 times from the day before delivery to 28 days postpartum. The systolic blood pressure (SBP) and diastolic blood pressure (DBP) on the day before delivery were 110.6 ± 1.0 and 68.1 ± 0.8 mmHg (estimate ± standard error). Postpartum BP increased from postpartum Days 3–8 in SBP and from Days 3–22 in DBP, compared to that on the day before delivery. The SBP and DBP were 4.9 and 4.7 mmHg higher on postpartum Days 8 and 7 than the day before pregnancy, respectively. During pregnancy, the pulse rate (PR) showed an inverted U‐shaped trend and then sharply increased rapidly until the first postpartum day after delivery. The Shock Index showed a similar trend to that of the PR, decreased from labor until postpartum Day 8, and plateaued thereafter. The double product peaked during labor, remained higher than the prelabor levels for approximately 10 days, and then decreased in the postpartum period.

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Izumi S. et al. Pregnancy and Postpartum Trends in Self‐Measured Blood Pressure and Derived Indices: The BOSHI Study // Journal of Clinical Hypertension. 2025. Vol. 27. No. 1.
GOST all authors (up to 50) Copy
Izumi S., Nishimura M., Iwama N., Tomita H., Hamada H., Obara T., Ishikuro M., Murakami T., Satoh M., Hirose T., Saito M., Ohkubo T., Kuriyama S., Yaegashi N., Hoshi K., IMAI Y., Metoki H. Pregnancy and Postpartum Trends in Self‐Measured Blood Pressure and Derived Indices: The BOSHI Study // Journal of Clinical Hypertension. 2025. Vol. 27. No. 1.
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TY - JOUR
DO - 10.1111/jch.14949
UR - https://onlinelibrary.wiley.com/doi/10.1111/jch.14949
TI - Pregnancy and Postpartum Trends in Self‐Measured Blood Pressure and Derived Indices: The BOSHI Study
T2 - Journal of Clinical Hypertension
AU - Izumi, Seiya
AU - Nishimura, Misato
AU - Iwama, Noriyuki
AU - Tomita, Hasumi
AU - Hamada, Hirotaka
AU - Obara, Taku
AU - Ishikuro, Mami
AU - Murakami, Takahisa
AU - Satoh, Michihiro
AU - Hirose, Takuo
AU - Saito, Masatoshi
AU - Ohkubo, Takayoshi
AU - Kuriyama, Shinichi
AU - Yaegashi, Nobuo
AU - Hoshi, Kazuhiko
AU - IMAI, YUTAKA
AU - Metoki, Hirohito
PY - 2025
DA - 2025/01/17
PB - Wiley
IS - 1
VL - 27
SN - 1524-6175
SN - 1751-7176
ER -
BibTex
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BibTex (up to 50 authors) Copy
@article{2025_Izumi,
author = {Seiya Izumi and Misato Nishimura and Noriyuki Iwama and Hasumi Tomita and Hirotaka Hamada and Taku Obara and Mami Ishikuro and Takahisa Murakami and Michihiro Satoh and Takuo Hirose and Masatoshi Saito and Takayoshi Ohkubo and Shinichi Kuriyama and Nobuo Yaegashi and Kazuhiko Hoshi and YUTAKA IMAI and Hirohito Metoki},
title = {Pregnancy and Postpartum Trends in Self‐Measured Blood Pressure and Derived Indices: The BOSHI Study},
journal = {Journal of Clinical Hypertension},
year = {2025},
volume = {27},
publisher = {Wiley},
month = {jan},
url = {https://onlinelibrary.wiley.com/doi/10.1111/jch.14949},
number = {1},
doi = {10.1111/jch.14949}
}
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