Evidence map›Paper›PMID 40971476›Full record

ArticleSleep2026

Transcutaneous versus arterial carbon dioxide monitoring in adult polysomnography studies.

Keeley A Miller, Thomas J Churchward, Julie Tolson, Warren R Ruehland, Christine F McDonald, Christopher J Worsnop

Abstract readComparative Study
In one paragraph

Article in Sleep, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. The Sleep and Breathing Conference: a long-standing and unique ERS/ESRS educational activity.European respiratory review : an official journal of the European Respiratory Society · 2026
    Article
  2. 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.

Keeley A MillerDepartment of Medicine, University of Melbourne, Melbourne, VIC, Australia.
Thomas J ChurchwardDepartment of Respiratory and Sleep Medicine, Austin Health, Heidelberg, VIC, Australia.
Julie TolsonDepartment of Medicine, University of Melbourne, Melbourne, VIC, Australia.ORCID 0000-0002-7002-2657
Warren R RuehlandDepartment of Respiratory and Sleep Medicine, Austin Health, Heidelberg, VIC, Australia.ORCID 0000-0001-9626-7460
Christine F McDonaldDepartment of Medicine, University of Melbourne, Melbourne, VIC, Australia.
Christopher J WorsnopDepartment of Medicine, University of Melbourne, Melbourne, VIC, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesTo determine the accuracy of transcutaneous carbon dioxide measurements using SenTec tcPCO2 during adult polysomnography (PSG) compared to arterial PCO2.

methodsIn consecutive patients having PSG with transcutaneous CO2 (tcPCO2) monitoring using a SenTec monitor, arterial blood gas samples were taken at the beginning and at the end of each sleep study. tcPCO2 measurements recorded at 0, 60, and 120 s after arterial sampling was determined in 51 participants who underwent PSG with tcPCO2 monitoring at the Austin Health Sleep Laboratory (Heidelberg, VIC, Australia) during the period 01/05/22-10/06/22. The mean of differences between arterial carbon dioxide tension (PaCO2) and the predicted value based on tcPCO2 measurements determined at each time point for evening and morning arterial samples.

resultsData were obtained from 37 participants. A statistically significant difference in the tcPCO2 values at the point of arterial sampling was found, with tcPCO2 on average 2.2-2.8 mmHg less than PaCO2 at various timepoints after arterial sampling. The upper limit of measurement accuracy represented a moderate difference (2-4.9 mmHg), within the clinically acceptable range of -7.5 to +7.5 mmHg variation from PaCO2 values.

conclusionsThe SenTec tcPCO2 electrode was found to be an appropriate alternative to arterial sampling for assessment of arterial carbon dioxide in adult patients in the PSG setting, with no significant difference in tcPCO2 accuracy based on the timing of transcutaneous measurements (up to 2 min) following arterial sampling.

Indexed as

Blood Gas Monitoring, TranscutaneousCarbon DioxidePolysomnographyAdultAgedArteriesBlood Gas AnalysisFemaleHumansMaleMiddle AgedReproducibility of ResultsCarbon Dioxidearterial blood gascarbon dioxidehypercapniapolysomnographyrespiratory failuretranscutaneous blood gas monitoring

Identifiers

PMID40971476
PMCPMC13017198

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LicenceCC BY
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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.