Evidence map›Paper›PMID 36073367›Full record

ArticleStroke2022

Mechanism of Spontaneous Intracerebral Hemorrhage Formation: An Anatomical Specimens-Based Study.

Radosław Rzepliński, Mikołaj Sługocki, Sylwia Tarka, Michał Tomaszewski, Michał Kucewicz, Krzysztof Karczewski, Paweł Krajewski, Jerzy Małachowski, Bogdan Ciszek

Open access · hybridAbstract read
In one paragraph

Article in Stroke, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.4field-weighted citation impact, top 6% 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

16 citing papers in PubMed, 29 citations in OpenAlex.

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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

9 authors at 3 institutions in 1 country.

Radosław RzeplińskiDepartment of Descriptive and Clinical Anatomy (R.R., M.S., B.C.), Medical University of Warsaw, Poland.ORCID 0000-0002-1112-6261
Mikołaj SługockiDepartment of Descriptive and Clinical Anatomy (R.R., M.S., B.C.), Medical University of Warsaw, Poland.ORCID 0000-0003-0057-9852
Sylwia TarkaDepartment of Neuropathology, Institute of Psychiatry and Neurology, Warsaw, Poland (S.T.).
Michał TomaszewskiInstitute of Mechanics and Computational Engineering, Faculty of Mechanical Engineering (M.T., M.K., J.M.), Military University of Technology, Warsaw, Poland.ORCID 0000-0001-6381-6697
Michał KucewiczInstitute of Mechanics and Computational Engineering, Faculty of Mechanical Engineering (M.T., M.K., J.M.), Military University of Technology, Warsaw, Poland.
Krzysztof KarczewskiInstitute of Materials Science and Engineering, Faculty of Advanced Technologies and Chemistry (K.K.), Military University of Technology, Warsaw, Poland.ORCID 0000-0001-9822-8799
Paweł KrajewskiDepartment of Forensic Medicine (S.T., P.K.), Medical University of Warsaw, Poland.
Jerzy MałachowskiInstitute of Mechanics and Computational Engineering, Faculty of Mechanical Engineering (M.T., M.K., J.M.), Military University of Technology, Warsaw, Poland.ORCID 0000-0003-1300-8020
Bogdan CiszekDepartment of Descriptive and Clinical Anatomy (R.R., M.S., B.C.), Medical University of Warsaw, Poland.
Medical University of Warsaw · PLMilitary University of Technology in Warsaw · PLInstitute of Psychiatry and Neurology · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite advances in understanding various risk and prognostic factors, spontaneous intracerebral hemorrhage is connected to very high morbidity and mortality, while the therapy is mainly supportive. Understanding of the pathophysiology of initial hematoma expansion is limited due to insufficient clinical data and lack of a suitable animal model.

methodsWe injected 40 anatomic specimens of the basal ganglia with contrast medium, scanned them with a micro-computed tomography scanner and analyzed the results of radiological studies, direct and histological examinations.

resultsIn 9 cases, micro-computed tomography and histological examinations revealed contrast medium extravasations mimicking intracerebral hematomas. The artificial hematomas spread both proximally and distally along the ruptured perforator and its branches in the perivascular spaces and detached the branches from the adjacent neural tissue leading to destruction of the tissue and secondary extravasations. Moreover, some contrast extravasations skipped to the perivascular spaces of unruptured perforators, created further extravasation sites and aggravated the expansion of the artificial hematoma. There was no subarachnoid extension of any artificial hematoma.

conclusionsWe postulate that a forming basal ganglia intracerebral hematoma spreads initially in the perivascular space, detaches the branches from the neural tissue and causes secondary bleeding. It can also skip to the perivascular space of a nearby perforator. The proposed mechanism of hematoma initiation and formation explains extent of damage to the neural tissue, variability of growth in time and space, creation of secondary bleeding sites, and limited usefulness of surgical interventions. The model is reproducible, the extent of the artificial hematoma can be easily controlled, the rupture sites of the perforating arteries can be determined, and preparation of the model does not require specialized, expensive equipment apart from the micro-computed tomography scanner.

Indexed as

Cerebral HemorrhageHematomaAnimalsBasal GangliaContrast MediaX-Ray MicrotomographyContrast Media

Identifiers

PMID36073367
PMCPMC9586829
OpenAlexW4294991467

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.