Evidence map›Paper›PMID 35136186›Full record

SynthesisHypertension research : official journal of the Japanese Society of Hypertension2022

Optimal blood pressure target to prevent severe hypertension in pregnancy: A systematic review and meta-analysis.

Makiko Abe, Hisatomi Arima, Yuichi Yoshida, Ako Fukami, Atsushi Sakima, Hirohito Metoki, Kazuhiro Tada, Asako Mito, Satoshi Morimoto, Hirotaka Shibata and 1 more

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis 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 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 5% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. The Japanese Society of Hypertension Guidelines for the management of elevated blood pressure and hypertension 2025 (JSH2025).Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  4. Article
  5. 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
  6. Article
  7. Review
  8. Article
  9. Review
  10. 2023 update and perspectives.Hypertension research : official journal of the Japanese Society of Hypertension · 2024
    Review
  11. Article
  12. Review
  13. Review
  14. 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
  15. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 8 institutions in 1 country.

Makiko AbeDepartment of Preventive Medicine and Public Health, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
Hisatomi ArimaDepartment of Preventive Medicine and Public Health, Faculty of Medicine, Fukuoka University, Fukuoka, Japan. harima@fukuoka-u.ac.jp.
Yuichi YoshidaDepartment of Endocrinology, Metabolism, Rheumatology and Nephrology, Faculty of Medicine, Oita University, Oita, Japan.
Ako FukamiDivision of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Fukuoka, Japan.
Atsushi SakimaHealth Administration Center, University of the Ryukyus, Okinawa, Japan.
Hirohito MetokiDivision of Public Health, Hygiene and Epidemiology, Tohoku Medical and Pharmaceutical University, Sendai, Japan.
Kazuhiro TadaDivision of Nephrology and Rheumatology, Department of Internal Medicine, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
Asako MitoDivision of Maternal Medicine, Center for Maternal-Fetal-Neonatal and Reproductive Medicine, National Center for Child Health and Development, Tokyo, Japan.
Satoshi MorimotoDepartment of Endocrinology and Hypertension, Tokyo Women's Medical University, Tokyo, Japan.
Hirotaka ShibataDepartment of Endocrinology, Metabolism, Rheumatology and Nephrology, Faculty of Medicine, Oita University, Oita, Japan.
Masashi MukoyamaDepartment of Nephrology, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan.
Fukuoka University · JPOita University · JPKumamoto University · JPKurume University · JPNational Center For Child Health and Development · JPTohoku Medical and Pharmaceutical University · JPTokyo Women's Medical University · JPUniversity of the Ryukyus · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Severe hypertension in pregnancy is a hypertensive crisis that requires urgent and intensive care due to its high maternal and fetal mortality. However, there is still a conflict of opinion on the recommendations of antihypertensive therapy. This study aimed to identify the optimal blood pressure (BP) levels to prevent severe hypertension in pregnant women with nonsevere hypertension. Ovid MEDLINE and the Cochrane Library were searched, and only randomized controlled trials (RCTs) were included if they compared the effects of antihypertensive drugs and placebo/no treatment or more intensive and less intensive BP-lowering treatments in nonsevere hypertensive pregnant patients. A random effects model meta-analysis was performed to estimate the pooled risk ratio (RR) for the outcomes. Forty RCTs with 6355 patients were included in the study. BP-lowering treatment significantly prevented severe hypertension (RR, 0.46; 95% CI, 0.37-0.56), preeclampsia (RR, 0.82; 95% CI, 0.69-0.98), severe preeclampsia (RR, 0.38; 95% CI, 0.17-0.84), placental abruption (RR, 0.52; 95% CI, 0.32-0.86), and preterm birth (< 37 weeks; RR, 0.81; 95% CI, 0.71-0.93), while the risk of small for gestational age infants was increased (RR, 1.25; 95% CI, 1.02-1.54). An achieved systolic blood pressure (SBP) of < 130 mmHg reduced the risk of severe hypertension to nearly one-third compared with an SBP of ≥ 140 mmHg, with a significant interaction of the BP levels achieved with BP-lowering therapy. There was no significant interaction between the subtypes of hypertensive disorders of pregnancy and BP-lowering treatment, except for placental abruption. BP-lowering treatment aimed at an SBP < 130 mmHg and accompanied by the careful monitoring of fetal growth might be recommended to prevent severe hypertension.

Indexed as

Abruptio PlacentaeHypertensionPre-EclampsiaAntihypertensive AgentsBlood PressureFemaleHumansInfant, NewbornPregnancyAntihypertensive AgentsBlood pressure-lowering treatmentHypertensive disorders of pregnancySevere hypertension

Identifiers

PMID35136186
OpenAlexW4210937864

What Socratic 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 Socratic graph.