Evidence map›Paper›PMID 34918020›Full record

ArticleBrain : a journal of neurology2022

Persistent white matter changes in recovered COVID-19 patients at the 1-year follow-up.

Sihong Huang, Zhiguo Zhou, Danhui Yang, Wei Zhao, Mu Zeng, Xingzhi Xie, Yanyao Du, Yingjia Jiang, Xianglin Zhou, Wenhan Yang and 6 more

Open access · hybridAbstract read
In one paragraph

Article in Brain : a journal of neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 3 pooled it
8.8field-weighted citation impact, top 2% 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

72 citing papers in PubMed, 3 syntheses or guidelines pooled it, 103 citations in OpenAlex.

  1. Pooled it
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  3. Post-COVID-19 conditions: a systematic review on advanced magnetic resonance neuroimaging findings.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
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12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

16 authors at 2 institutions in 1 country.

Sihong HuangDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Zhiguo ZhouDepartment of Respiratory Medicine, The First Hospital of Changsha, Changsha, Hunan 410005, China.
Danhui YangDepartment of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Wei ZhaoDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Mu ZengDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Xingzhi XieDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Yanyao DuDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Yingjia JiangDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Xianglin ZhouDepartment of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Wenhan YangDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Hu GuoDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Hui SunDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Ping LiuDepartment of Respiratory Medicine, The First Hospital of Changsha, Changsha, Hunan 410005, China.
Jiyang LiuDepartment of Respiratory Medicine, The First Hospital of Changsha, Changsha, Hunan 410005, China.
Hong LuoDepartment of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Jun LiuDepartment of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.ORCID 0000-0002-7851-6782
Central South University · CNThe First Hospital of Changsha · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is growing evidence that severe acute respiratory syndrome coronavirus 2 can affect the CNS. However, data on white matter and cognitive sequelae at the 1-year follow-up are lacking. Therefore, we explored these characteristics in this study. We investigated 22 recovered coronavirus disease 2019 (COVID-19) patients and 21 matched healthy controls. Diffusion tensor imaging, diffusion kurtosis imaging and neurite orientation dispersion and density imaging were performed to identify white matter changes, and the subscales of the Wechsler Intelligence scale were used to assess cognitive function. Correlations between diffusion metrics, cognitive function and other clinical characteristics were then examined. We also conducted subgroup analysis based on patient admission to the intensive care unit. The corona radiata, corpus callosum and superior longitudinal fasciculus had a lower volume fraction of intracellular water in the recovered COVID-19 group than in the healthy control group. Patients who had been admitted to the intensive care unit had lower fractional anisotropy in the body of the corpus callosum than those who had not. Compared with the healthy controls, the recovered COVID-19 patients demonstrated no significant decline in cognitive function. White matter tended to present with fewer abnormalities for shorter hospital stays and longer follow-up times. Lower axonal density was detected in clinically recovered COVID-19 patients after 1 year. Patients who had been admitted to the intensive care unit had slightly more white matter abnormalities. No significant decline in cognitive function was found in recovered COVID-19 patients. The duration of hospital stay may be a predictor for white matter changes at the 1-year follow-up.

Indexed as

COVID-19White MatterAnisotropyBrainDiffusion Tensor ImagingFollow-Up StudiesHumans1-year follow-upcognitive functionintensive care unitrecovered COVID-19 patientswhite matter changes

Identifiers

PMID34918020
PMCPMC8754808
OpenAlexW4200399922

What OpenQuestion holds

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LicenceCC BY-NC
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.