Evidence map›Paper›PMID 33298982›Full record

ArticleScientific reports2020

Longer apneas and hypopneas are associated with greater ultra-short-term HRV in obstructive sleep apnea.

Salla Hietakoste, Henri Korkalainen, Samu Kainulainen, Saara Sillanmäki, Sami Nikkonen, Sami Myllymaa, Brett Duce, Juha Töyräs, Timo Leppänen

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 41 citations in OpenAlex.

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  16. Pulse Oximetry: The Working Principle, Signal Formation, and Applications.Advances in experimental medicine and biology · 2022
    Article
  17. Article
  18. Photoplethysmography in Normal and Pathological Sleep.Sensors (Basel, Switzerland) · 2021
    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

9 authors at 4 institutions in 2 countries.

Salla HietakosteDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland. salla.hietakoste@uef.fi.
Henri KorkalainenDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Samu KainulainenDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Saara SillanmäkiDiagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland.
Sami NikkonenDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Sami MyllymaaDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Brett DuceSleep Disorders Centre, Department of Respiratory and Sleep Medicine, Princess Alexandra Hospital, Brisbane, Australia.
Juha TöyräsDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Timo LeppänenDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Kuopio University Hospital · FIUniversity of Eastern Finland · FIPrincess Alexandra Hospital · AUThe University of Queensland · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Low long-term heart rate variability (HRV), often observed in obstructive sleep apnea (OSA) patients, is a known risk factor for cardiovascular diseases. However, it is unclear how the type or duration of individual respiratory events modulate ultra-short-term HRV and beat-to-beat intervals (RR intervals). We aimed to examine the sex-specific changes in RR interval and ultra-short-term HRV during and after apneas and hypopneas of various durations. Electrocardiography signals, recorded as a part of clinical polysomnography, of 758 patients (396 men) with suspected OSA were analysed retrospectively. Average RR intervals and time-domain HRV parameters were determined during the respiratory event and the 15-s period immediately after the event. Parameters were analysed in three pooled sex-specific subgroups based on the respiratory event duration (10-20 s, 20-30 s, and > 30 s) separately for apneas and hypopneas. We observed that RR intervals shortened after the respiratory events and the magnitude of these changes increased in both sexes as the respiratory event duration increased. Furthermore, ultra-short-term HRV generally increased as the respiratory event duration increased. Apneas caused higher ultra-short-term HRV and a stronger decrease in RR interval compared to hypopneas. In conclusion, the respiratory event type and duration modulate ultra-short-term HRV and RR intervals. Considering HRV and the respiratory event characteristics in the diagnosis of OSA could be useful when assessing the cardiac consequences of OSA in a more detailed manner.

Indexed as

AdultAgedArousalElectrocardiographyFemaleHeart RateHumansMaleMiddle AgedPolysomnographyRespiratory RateSex FactorsSleep Apnea, ObstructiveSleep StagesTime Factors

Identifiers

PMID33298982
PMCPMC7726571
OpenAlexW3110929349

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.