Evidence map›Paper›PMID 37335412›Full record

SynthesisJournal of clinical monitoring and computing2024

Predictor role of heart rate variability in subarachnoid hemorrhage: A systematic review.

Sanket Agrawal, Kristof Nijs, Sudhakar Subramaniam, Marina Englesakis, Lashmi Venkatraghavan, Tumul Chowdhury

Abstract readSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Journal of clinical monitoring and computing, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
2.0field-weighted citation impact, top 12% 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

5 citing papers in PubMed, 9 citations in OpenAlex.

  1. Reduced vagal reserve in benign paroxysmal positional vertigo: preliminary results of a case-control HRV study.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Observational
  2. Article
  3. Article
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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

6 authors at 3 institutions in 1 country.

Sanket Agrawal *Department of Anesthesia and Pain Medicine, Toronto Western Hospital, Toronto, Canada.
Kristof Nijs *Department of Anesthesia and Pain Medicine, Toronto Western Hospital, Toronto, Canada.
Sudhakar SubramaniamDepartment of Anesthesia, Thunder Bay Regional Health Sciences Center, Thunder Bay, ON, Canada.
Marina EnglesakisLibrary and Information Services, University Health Network, Toronto, ON, Canada.
Lashmi VenkatraghavanDepartment of Anesthesia and Pain Medicine, Toronto Western Hospital, Toronto, Canada.
Tumul ChowdhuryDepartment of Anesthesia and Pain Medicine, Toronto Western Hospital, Toronto, Canada. Tumul.Chowdhury@uhn.ca.
Toronto Western Hospital · CAThunder Bay Regional Health Sciences Centre · CAUniversity Health Network · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background- Subarachnoid hemorrhage (SAH) is one of the most devastating diseases with a high rate of morbidity and mortality. The heart rate variability (HRV) is a non-invasive method of monitoring various components of the autonomic nervous system activity that can be utilized to delineate autonomic dysfunctions associated with various physiological and pathological conditions. The reliability of HRV as a predictor of clinical outcome in aneurysmal subarachnoid hemorrhage (aSAH) is not yet well investigated in literature. Methods- A systematic review and in depth analysis of 10 articles on early HRV changes in SAH patients was performed. Results- This systematic review demonstrates a correlation between early changes in HRV indices (time and frequency domain) and the development of neuro-cardiogenic complications and poor neurologic outcome in patients with SAH. Conclusions- A correlation between absolute values or changes of the LF/HF ratio and neurologic and cardiovascular complications was found in multiple studies. Because of significant limitations of included studies, a large prospective study with proper handling of confounders is needed to generate high-quality recommendations regarding HRV as a predictor of post SAH complications and poor neurologic outcome.

Indexed as

Autonomic Nervous SystemHeart RateSubarachnoid HemorrhageElectrocardiographyHumansPrognosisReproducibility of ResultsAutonomic dysfunctionComplicationsHeart rate variabilityPredictorSubarachnoid hemorrhage

Identifiers

PMID37335412
OpenAlexW4381166495

What OpenQuestion holds

Textmetadata
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.