Evidence map›Paper›PMID 39994668›Full record

ArticleBMC infectious diseases2025

The impact of long COVID on heart rate variability: a cross-sectional study.

Minyu Qin, Kwan Lee, Seok-Ju Yoo

Abstract read
In one paragraph

Article in BMC infectious diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Review
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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

3 authors.

Minyu QinDepartment of Preventive Medicine, College of Medicine, Dongguk University, Gyeongju, Republic of Korea.
Kwan LeeDepartment of Preventive Medicine, College of Medicine, Dongguk University, Gyeongju, Republic of Korea.
Seok-Ju YooDepartment of Preventive Medicine, College of Medicine, Dongguk University, Gyeongju, Republic of Korea. medhippo@dongguk.ac.kr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLong-term COVID-19 (LC), which may affect the autonomic nervous system (ANS), is the term for the symptoms that some patients had for an additional month after contracting the virus. Therefore, during the LC phase, ANS status was evaluated in patients with mild-to-moderate COVID-19 using heart rate variability (HRV), a measurement of ANS function.

methodsA cross-sectional research with 173 participants - both positive and negative for COVID-19 - was conducted. Based on self-reports, patients with COVID-19 were classified as to whether they had LC or not. A 5-minute ECG recorder and data detection and response report were used to measure the ANS.

resultsThere were notable age differences across the groups (p = 0.034). Patients with LC under 25 years of age had a lower HRV categorized as a very-low-frequency (VLF) domain (p = 0.012). Compared to the group without LC, a higher number of people in the LC group had aberrant autonomic neuroactivity (p = 0.048).

conclusionMild-to-moderate patients with COVID-19 in young to middle age may develop autonomic dysfunction one month after infection.

Indexed as

Autonomic Nervous SystemCOVID-19Heart RateAdultAgedCross-Sectional StudiesElectrocardiographyFemaleHumansMaleMiddle AgedSARS-CoV-2Young AdultAutonomic nervous systemHeart rateLong COVID-19Vagal nervous system

Identifiers

PMID39994668
PMCPMC11849358

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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.