Evidence map›Paper›PMID 30353807›Full record

ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2018

Breathing Irregularity Is Independently Associated With the Severity of Obstructive Sleep Apnea in Patients With Multiple System Atrophy.

Hideaki Nakayama, Satoshi Hokari, Yasuyoshi Ohshima, Takayuki Matsuto, Takayoshi Shimohata

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 39% 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, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. A strategic approach of the management of sleep-disordered breathing in multiple system atrophy.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Pooled it
  2. Article
  3. Article
  4. Review
  5. Sleep-Disordered Breathing in Multiple System Atrophy: Pathophysiology and New Insights for Diagnosis and Treatment.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2018
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Hideaki NakayamaDepartment of Respiratory Medicine, Tokyo Medical University, Tokyo, Japan.
Satoshi HokariDepartment of Respiratory Medicine and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
Yasuyoshi OhshimaDepartment of Respiratory Medicine and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
Takayuki MatsutoDepartment of Laboratory Medicine, Niigata University School of Medicine, Niigata, Japan.
Takayoshi ShimohataDepartment of Neurology and Geriatrics, Gifu University Graduate School of Medicine, Gifu, Japan.
Niigata University · JPGifu University · JPTokyo Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesMultiple system atrophy (MSA) is a neurodegenerative disease characterized by the combination of cerebellar ataxia, parkinsonism, and autonomic disturbance. Patients with MSA frequently have sleep-disordered breathing. In some patients with MSA, central sleep apnea manifests during the disease's natural course or as a treatment effect. Breathing instability may be involved in the development of obstructive sleep apnea (OSA); therefore, we investigated whether breathing instability affects the severity of OSA in patients with MSA.

methodsPatients with MSA and a control group of individuals who were matched for age, body mass index (BMI), and supine apnea-hypopnea index (AHI) were recruited. Breathing instability was evaluated by using polysomnography to determine the irregular pattern with approximate entropy (ApEn) of chest respiratory movements during wakefulness before sleep onset. The ApEn values were compared between the groups. The severity of OSA was evaluated with background parameters and ApEn values by regression analysis.

resultsTwenty patients with MSA (9 men; mean age, 61 years; BMI, 24.1 kg/m

conclusionsPatients with MSA had more breathing irregularity. In patients with MSA, breathing instability may be a more influential factor for OSA than BMI. COMMENTARY: A commentary on this article appears in this issue on page 1641.

Indexed as

Case-Control StudiesFemaleHumansMaleMiddle AgedMultiple System AtrophyPolysomnographyRespiratory Physiological PhenomenaSeverity of Illness IndexSleep Apnea, Obstructiveapproximate entropybreathing irregularitymultiple system atrophyobstructive sleep apneapathophysiology

Identifiers

PMID30353807
PMCPMC6175809
OpenAlexW2897041208

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.