Evidence map›Paper›PMID 34988173›Full record

ArticleAnnals of translational medicine2021

Development and validation of an early predictive nomogram for delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage.

Long Zhao, Tao Chen, Hao-Ji Yan, Chang Liu, Yi Cao, Yi Zhang, Ping Lin, Xiao-Ping Tang, Liang-Xue Zhou

Open access · diamondAbstract read
In one paragraph

Article in Annals of translational medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 27% 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

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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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 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.

Long Zhao *Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China.
Tao Chen *Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
Hao-Ji YanCollege of Medical Imaging, North Sichuan Medical College, Nanchong, China.
Chang LiuDepartment of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China.
Yi CaoDepartment of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China.
Yi ZhangCollege of Clinical Medicine, North Sichuan Medical College, Nanchong, China.
Ping LinCollege of Clinical Medicine, North Sichuan Medical College, Nanchong, China.
Xiao-Ping TangDepartment of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
Liang-Xue ZhouDepartment of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China.
West China Hospital of Sichuan University · CNNorth Sichuan Medical University · CNAffiliated Hospital of North Sichuan Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrevious studies have shown that platelet is involved in the occurrence and progression of delayed cerebral ischemia (DCI) after aneurysmal subarachnoid hemorrhage (aSAH), but the relationship between platelet and DCI is not completely clear. Here, we aimed to screen the early platelet parameters associated with DCI after aSAH and develop an early predictive nomogram for DCI after aSAH.

methodsThe study was carried out in the neurosurgery department of Affiliated Hospital of North Sichuan Medical College. A total of 285 consecutive aSAH patients admitted within 24 hours after onset were analyzed retrospectively. Univariate and multivariate analyses were used to identify risk factors for DCI. A predictive nomogram was developed and validated with R software.

resultsSixty-six (23.16%) of the 285 patients with aSAH exhibited DCI during hospitalization. The DCI group and the non-DCI group showed statistically significant differences in red blood cell count (RBC), platelet count (PLT), mean platelet volume (MPV), modified Fisher grade and platelet distribution width (PDW). Multivariable logistic regression analysis showed that modified Fisher grade [odds ratio (OR) =1.354; 95% confidence interval (CI): 1.034-1.773; P=0.028] and mean MPV [OR =1.825; 95% CI: 1.429-2.331; P<0.001] were independent risk factors for DCI. Modified Fisher grade, RBC, PLT, MPV, and PDW were used to develop a predictive nomogram for DCI. The area under the receiver operating characteristic (ROC) curve (AUC) was 0.799 (95% CI: 0.737-0.861) in the training set and 0.783 (95% CI: 0.616-0.949) in the validation set. The calibration curve showed that the predicted probability concurred with the actual probability. Decision curve analysis indicated that this nomogram had good clinical application value and could be used for clinical decision making.

conclusionsOur study found that MPV was an early predictor of DCI after aSAH. The nomogram incorporating early MPV had greater value in predicting DCI after aSAH.

Indexed as

aneurysmal subarachnoid hemorrhage (aSAH)delayed cerebral ischemia (DCI)Mean platelet volume (MPV)nomogramplatelet parameters

Identifiers

PMID34988173
PMCPMC8667093
OpenAlexW3216593716

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.