Evidence map›Paper›PMID 34848565›Full record

ArticleStroke and vascular neurology2022

Night-time diastolic blood pressure variability relates to stroke recurrence in patients who had ischaemic stroke with small artery occlusion.

Tingting Wang, Jie Xu, Anxin Wang, Ying Liu, Xingquan Zhao, Yongjun Wang, Yilong Wang

Open access · goldAbstract read
In one paragraph

Article in Stroke and vascular neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 25% 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Asian expert consensus on high-quality hypertension management.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Review
  3. Article
  4. Article
  5. Observational
  6. Systolic blood pressure time in target range within 24 hours and incident heart failure: insights from the real-world setting.Hypertension research : official journal of the Japanese Society of Hypertension · 2025
    Article
  7. Minor stroke patients with mild-moderate diastolic blood pressure derive greater benefit from dual antiplatelet therapy.Hypertension research : official journal of the Japanese Society of Hypertension · 2024
    Observational
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

7 authors at 1 institution in 1 country.

Tingting WangDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.ORCID 0000-0002-3809-2209
Jie XuDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.ORCID 0000-0002-8320-218X
Anxin WangDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.ORCID 0000-0003-4351-2877
Ying LiuDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
Xingquan ZhaoDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
Yongjun WangDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
Yilong WangDepartment of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China yilongwang528@163.com.
Capital Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeThe association between blood pressure variability (BPV) and stroke recurrence among patients who had ischaemic stroke (IS) remains unclear. This study aimed to investigate the association between BPV and stroke recurrence in patients who had IS of large artery atherosclerosis (LAA) subtype and small artery occlusion (SAO) subtype.

methodsData from the BOSS (Blood Pressure and Clinical Outcome in Transient Ischemic Attack or Ischemic Stroke) study were examined. IS subtypes were diagnosed according to the Trial of Org 10172 in Acute Stroke Treatment criteria. BPV was performed by 24-hour ambulatory blood pressure monitoring and defined through SD of blood pressure. The primary outcome was stroke recurrence within 90 days after discharge. Multivariable Cox regression model was used to assess the association between BPV and stroke recurrence in patients who had IS of LAA subtype and SAO subtype.

resultsA total of 1390 patients who had IS from the BOSS study were included in the present study. Multivariable analysis suggests that 24-hour systolic BPV (SBPV) and night-time diastolic BPV (DBPV) were significantly associated with stroke recurrence among all patients who had IS (HR, 2.50, 95% CI 1.07 to 5.84; HR, 1.85, 95% CI 1.07 to 3.21, respectively). Night-time SBPV and night-time DBPV were significantly associated with stroke recurrence in patients with SAO subtype (HR, 2.77, 95% CI 1.07 to 7.15; HR, 3.60, 95% CI 1.39 to 9.29, respectively). However, in the adjusted model, only night-time DBPV remained significant in patients with SAO subtype (HR, 3.87, 95% CI 1.40 to 10.71). Similar results were not found in patients who had IS of LAA subtype.

conclusionsHigh night-time DBPV was associated with increased risk of stroke recurrence among patients who had IS of SAO subtype. The results of this study have implications for the secondary prevention management and future research of patients who had IS of SAO subtype. The association between BPV and stroke recurrence in patients who had IS of LAA subtype and SAO subtype should be investigated in larger, population-based studies.

Indexed as

AtherosclerosisBrain IschemiaIschemic StrokeStrokeArteriesBlood PressureBlood Pressure Monitoring, AmbulatoryHumansblood pressurestroke

Identifiers

PMID34848565
PMCPMC9240460
OpenAlexW3215186991

What OpenQuestion holds

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Registered trials

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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.