Evidence map›Paper›PMID 34635810›Full record

ArticleHypertension research : official journal of the Japanese Society of Hypertension2022

Lower systolic blood pressure levels in early pregnancy are associated with a decreased risk of early-onset superimposed preeclampsia in women with chronic hypertension: a multicenter retrospective study.

Akihiko Ueda, Masaaki Hasegawa, Noriomi Matsumura, Hiroshi Sato, Kenzo Kosaka, Kaoru Abiko, Shinya Yoshioka, Takaaki Yoshida, Keiji Tatsumi, Toshihiro Higuchi and 10 more

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in Hypertension research : official journal of the Japanese Society of Hypertension, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Blood pressure-lowering treatment for pregnant women with non-severe hypertension: a systematic review and meta-analysis.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Pooled it
  2. Gestational ages-specific blood pressure patterns and risk of adverse pregnancy outcomes in women with chronic hypertension.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  3. Review
  4. Article
  5. Article
  6. Stage 1 hypertension in early pregnancy: a key indicator of adverse perinatal outcomes.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Article
  7. Is an office blood pressure ≥140/90 mmHg an appropriate hypertension threshold for pregnant women?Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Maternal preconception blood pressure and the association with preterm birth.Hypertension research : official journal of the Japanese Society of Hypertension · 2024
    Article
  12. 2023 update and perspectives.Hypertension research : official journal of the Japanese Society of Hypertension · 2024
    Review
  13. Preeclampsia up to date-What's going on?Hypertension research : official journal of the Japanese Society of Hypertension · 2023
    Review
  14. Review
  15. Update on Hypertension Research in 2021.Hypertension research : official journal of the Japanese Society of Hypertension · 2022
    Review
  16. Hypertensive disorders of pregnancy: definition, management, and out-of-office blood pressure measurement.Hypertension research : official journal of the Japanese Society of Hypertension · 2022
    Review
  17. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

20 authors at 14 institutions in 1 country.

Akihiko UedaDepartment of Gynecology and Obstetrics, Kyoto University, Kyoto, Japan.
Masaaki HasegawaDepartment of Obstetrics and Gynecology, Kurashiki Central Hospital, Okayama, Japan.
Noriomi MatsumuraDepartment of Obstetrics and Gynecology, Kindai University Hospital, Osaka, Japan.
Hiroshi SatoDepartment of Obstetrics and Gynecology, Hyogo Prefectural Amagasaki General Medical Center, Hyogo, Japan.
Kenzo KosakaDepartment of Obstetrics and Gynecology, Shizuoka General Hospital, Shizuoka, Japan.
Kaoru AbikoDepartment of Obstetrics and Gynecology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan.
Shinya YoshiokaDepartment of Obstetrics and Gynecology, Kobe City Medical Center General Hospital, Hyogo, Japan.
Takaaki YoshidaDepartment of Obstetrics and Gynecology, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan.
Keiji TatsumiDepartment of Obstetrics and Gynecology, National Hospital Organization Osaka National Hospital, Osaka, Japan.
Toshihiro HiguchiDepartment of Obstetrics and Gynecology, Kitano Hospital, Osaka, Japan.
Kohei FujitaDepartment of Obstetrics and Gynecology, Japanese Red Cross Otsu Hospital, Shiga, Japan.
Shoko SasakiDepartment of Obstetrics and Gynecology, Mitsubishi Kyoto Hospital, Kyoto, Japan.
Masaki GotoDepartment of Obstetrics and Gynecology, Takamatsu Red Cross Hospital, Kagawa, Japan.
Hiroshi TakaiDepartment of Obstetrics and Gynecology, Japan Baptist Hospital, Kyoto, Japan.
Yoshitsugu ChigusaDepartment of Gynecology and Obstetrics, Kyoto University, Kyoto, Japan.
Haruta MogamiDepartment of Gynecology and Obstetrics, Kyoto University, Kyoto, Japan.
Norimasa SagawaDepartment of Obstetrics and Gynecology, Rakuwakai Otowa Hospital, Kyoto, Japan.
Masaki MandaiDepartment of Gynecology and Obstetrics, Kyoto University, Kyoto, Japan.
Eiji KondohDepartment of Gynecology and Obstetrics, Kyoto University, Kyoto, Japan. kondo@kuhp.kyoto-u.ac.jp.
KAMOGAWA study group
Kyoto University · JPHyogo Prefectural Amagasaki General Medical Center · JPJapanese Red Cross Society Wakayama Medical Center · JPKindai University Hospital · JPKitano Hospital · JPKobe City Medical Center General Hospital · JPKurashiki Central Hospital · JPKyoto Medical Center · JPMitsubishi Kyoto Hospital · JPOsaka National Hospital · JPOtsu Red Cross Hospital · JPRakuwakai Otowa Hospital · JPShizuoka General Hospital · JPTakamatsu Red Cross Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To clarify the impact of blood pressure (BP) management ranges on pregnancy outcomes, we conducted a multicenter retrospective analysis of 215 women with singleton pregnancies diagnosed with essential hypertension either before or within 14 weeks of gestation. Patients were classified according to systolic BP (sBP; <130, 130-139, 140-159, and ≥160 mmHg) or diastolic BP (dBP; <80, 80-89, 90-109, and ≥110 mmHg) at 8-11, 12-15, and 16-19 weeks of gestation. The risk of early-onset superimposed preeclampsia and small-for-gestational-age neonates was assessed in each BP group. Moreover, a subgroup analysis was performed in 144 eligible patients whose BP was measured at both 12-13 and 14-15 weeks of gestation. At 16-19 weeks of gestation, higher sBP significantly increased the incidence of early-onset superimposed preeclampsia (13.3%, 24.6%, 32.2% and 75.0%, respectively) and small-for-gestational-age neonates (6.0%, 13.1%, 16.9% and 50.0%, respectively). Multivariate logistic regression analyses showed that women with sBP < 130 mmHg at 16-19 weeks of gestation had a significantly lower risk of early-onset superimposed preeclampsia than women with sBP of 140-159 mmHg. Subgroup analyses also showed that even at 14-15 weeks of gestation, sBP < 130 mmHg was associated with a significantly lower risk of early-onset superimposed preeclampsia than an sBP of 140-159 mmHg. In conclusion, sBP < 130 mmHg within 14 weeks of gestation reduced the risk of developing early-onset superimposed preeclampsia in women with chronic hypertension.

Indexed as

HypertensionPre-EclampsiaBlood PressureFemaleHumansInfant, NewbornInfant, Small for Gestational AgePregnancyRetrospective StudiesChronic hypertensionFetal growth restrictionFirst trimester of pregnancySmall for gestational ageSuperimposed preeclampsia

Identifiers

PMID34635810
OpenAlexW3206327256

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.