Evidence map›Paper›PMID 40650754›Full record

ArticleSleep & breathing = Schlaf & Atmung2025

The effect of continuous positive airway pressure on nocturnal blood pressure among obstructive sleep apnea-hypopnea syndrome patients.

Xin Zhao, Chenxu Zhang, Ping Zeng, Jin Zhou, Xiaoying Li, Xiaoqing Zhang

Abstract read
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In one paragraph

Article in Sleep & breathing = Schlaf & Atmung, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
–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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. [Association Between Obstructive Sleep Apnea and Behavioral Problems in Children].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2025
    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

6 authors.

Xin ZhaoDepartment of Health Management, West China Second University Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China.
Chenxu ZhangDepartment of Occupational Health, Sleep Medicine Center and ENT, West China School of Public Health and West China Forth Hospital, Sichuan University, No.18, Section 3, Renmin South Road, Wuhou District, Chengdu, 610041, Sichuan Province, China.
Ping ZengDepartment of Occupational Health, Sleep Medicine Center and ENT, West China School of Public Health and West China Forth Hospital, Sichuan University, No.18, Section 3, Renmin South Road, Wuhou District, Chengdu, 610041, Sichuan Province, China.
Jin ZhouDepartment of Occupational Health, Sleep Medicine Center and ENT, West China School of Public Health and West China Forth Hospital, Sichuan University, No.18, Section 3, Renmin South Road, Wuhou District, Chengdu, 610041, Sichuan Province, China.
Xiaoying LiDepartment of Occupational Health, Sleep Medicine Center and ENT, West China School of Public Health and West China Forth Hospital, Sichuan University, No.18, Section 3, Renmin South Road, Wuhou District, Chengdu, 610041, Sichuan Province, China.
Xiaoqing ZhangDepartment of Occupational Health, Sleep Medicine Center and ENT, West China School of Public Health and West China Forth Hospital, Sichuan University, No.18, Section 3, Renmin South Road, Wuhou District, Chengdu, 610041, Sichuan Province, China. zhangxiaoqingzxq10@163.com.

Funding

Sichuan Province Science and Technology Support Program 2021YFH0165
6 · The paper itself

Abstract

purposeFew articles focus on the effect of CPAP on the nocturnal blood pressure in OSA patients. This study aims to evaluate the effects of continuous positive airway pressure (CPAP) therapy on nocturnal blood pressure in individuals with obstructive sleep apnea-hypopnea syndrome (OSAHS), which fills the research gap. Additionally, differences in nocturnal blood pressure measurements before and after CPAP therapy were analyzed across varying disease severities.

methodsA total of 80 individuals with newly diagnosed OSAHS who sought care at the Sleep Respiratory Disease Diagnosis and Treatment Center at West China Fourth Hospital of Sichuan University between December 2022 and June 2023 were included in this study. All participants completed a single night of CPAP therapy, administered from 10:00 PM on day 1 to 6:00 AM on day 2, during which nocturnal blood pressure measurements were assessed using pulse transit time.

resultsFollowing CPAP therapy, significant reductions were observed in the mean nocturnal diastolic blood pressure (nDBP) [(78.40 ± 13.06) vs. (74.03 ± 9.90) mmHg] and the nocturnal blood pressure fluctuation index (NBPFI) [(21.38 ± 19.95) vs. (5.81 ± 5.40) n/h] (p < 0.05). However, no significant difference was noted in the mean nocturnal systolic blood pressure (p > 0.05). Subgroup analysis based on disease severity: The reductions in nDBP [(6.16 ± 11.89) vs. (-0.32 ± 12.43) mmHg, p < 0.05] and nocturnal blood pressure fluctuation [(20.48 ± 19.05) vs. (2.59 ± 4.44) n/h, p < 0.05] were significantly greater in the severe group compared to the mild-to-moderate group.

conclusionThe findings suggested that CPAP therapy could potentially contribute to reductions in nDBP and the NBPFI in individuals with OSAHS, with more noticeable effects in patients with severe OSAHS.

Indexed as

Blood PressureContinuous Positive Airway PressureSleep Apnea, ObstructiveAdultFemaleHumansMaleMiddle AgedTreatment OutcomeBlood pressureContinuous positive airway pressureObstructive sleep apnea-hypopnea syndrome

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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.