Evidence map›Paper›PMID 30510244›Full record

Trial reportScientific reports2018

Hypercapnia impaired cognitive and memory functions in obese patients with obstructive sleep apnoea.

Shu-Chin Kung, Yu-Chih Shen, En-Ting Chang, Ya-Ling Hong, Ling-Yi Wang

Abstract readClinical Trial
In one paragraph

Trial report in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

  1. Trial
  2. Trial
  3. Review
  4. Review
  5. Review
  6. Review
  7. General low alertness in people with obstructive sleep apnea.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2024
    Article
  8. Article
  9. The duration-dependent and sex-specific effects of neonatal sevoflurane exposure on cognitive function in rats.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Contribution of hypercapnia to cognitive impairment in severe sleep-disordered breathing.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Article
  14. Article
  15. Vasomotor influences on glymphatic-lymphatic coupling and solute trafficking in the central nervous system.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Article
  16. Review
  17. Article
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

5 authors.

Shu-Chin KungDepartment of Human Development and Psychology, Tzu Chi University, Hualien, Taiwan.
Yu-Chih ShenDepartment of Psychiatry, Buddhist Tzu Chi General Hospital, Hualien, Taiwan.
En-Ting ChangSchool of Medicine, Tzu Chi University, Hualien, Taiwan. evan19760202@yahoo.com.tw.
Ya-Ling HongDepartment of Human Development and Psychology, Tzu Chi University, Hualien, Taiwan.
Ling-Yi WangEpidemiology and Biostatistics Consulting Center, Buddhist Tzu Chi General Hospital, Hualien, Taiwan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Obstructive sleep apnoea (OSA) is a sleep disorder involving repeated nocturnal desaturation and sleep fragmentation. OSA can result in decreased daytime alertness and neurocognitive dysfunction. Hypercapnia status is also related to neurocognitive dysfunction in patients with pulmonary diseases. We evaluated the effects of hypercapnia on cognitive performance and memory function in a prospective case-controlled study. We enrolled thirty-nine obese patients with OSA and collected their arterial blood samples. All the participants provided arterial blood samples, and completed two questionnaires (the Pittsburgh Sleep Quality Index and the Epworth Sleepiness Scale) and six cognitive tasks (the psychomotor vigilance task [PVT], the Stroop task, the Eriksen flanker task, processing speed [DSST], and verbal and visual memory [LM&FM]), which were used to evaluate daytime sleepiness, cognitive function, and memory function within one week of a polysomnographic study. When compared to the OSA without diurnal hypoventilation, the patients with stable hypercapnia (OHS) had increased reaction times in the PVT, Stroop task, and flanker task. Hypercapnic obese patients with OSA also had comparatively significantly lower scores in the processing speed and logical memory tests. OHS had increased reaction times in the attention and cognitive function assessments, and deficits in the logical memory, when compared to those with OSA without diurnal hypoventilation.

Indexed as

Cognitive DysfunctionHypercapniaMemory DisordersObesitySleep Apnea, ObstructiveAdultFemaleHumansMaleMiddle AgedProspective Studies

Identifiers

PMID30510244
PMCPMC6277381

What OpenQuestion holds

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Registered trials

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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.