Evidence map›Paper›PMID 34556765›Full record

Observational studyScientific reports2021

Comparison of SpO

Leonardo Zumerkorn Pipek, Rafaela Farias Vidigal Nascimento, Milena Marques Pagliarelli Acencio, Lisete Ribeiro Teixeira

Registry-linked trialOpen access · goldAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07311135 (Accuracy of Wrist-worn Pulse Oximeter SpO2 Measurements in Patients Diagnosed With Pulmonary Hypertension), which is not on this map. Cited by 52 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 1 pooled it
10.6field-weighted citation impact, top 1% 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.

NCT07311135 recruitingnot on this mapstarted 2025, after this paper: background citation

Accuracy of Wrist-worn Pulse Oximeter SpO2 Measurements in Patients Diagnosed With Pulmonary Hypertension

TypeobservationalSponsorGolden Jubilee National HospitalRan2025 to 2026Enrolled20ConditionsPulmonary Hypertension
3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 1 synthesis or guideline pooled it, 90 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Smartwatch-Derived SpORespirology case reports · 2026
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  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Observational
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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

4 authors at 2 institutions in 1 country.

Leonardo Zumerkorn PipekFaculdade de Medicina FMUSP, Universidade de Sao Paulo, São Paulo, São Paulo, Brazil. leonardo.pipek@fm.usp.br.
Rafaela Farias Vidigal NascimentoCentro Universitário FMABC, Santo André, São Paulo, Brazil.
Milena Marques Pagliarelli AcencioLaboratorio de Pneumologia/LIM09-Divisao de Pneumologia, Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, SP, Brazil.
Lisete Ribeiro TeixeiraFaculdade de Medicina FMUSP, Universidade de Sao Paulo, São Paulo, São Paulo, Brazil.
Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRFaculdade de Medicina do ABC · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lung diseases have high mortality and morbidity, with an important impact on quality of life. Hypoxemic patients are advised to use oxygen therapy to prolong their survival, but high oxygen saturation (SpO

Indexed as

Wearable Electronic DevicesAgedCross-Sectional StudiesFemaleHealthy VolunteersHeart RateHumansLung Diseases, InterstitialMaleMiddle AgedOximetryOxygen SaturationPulmonary Disease, Chronic ObstructiveReproducibility of ResultsWrist

Identifiers

PMID34556765
PMCPMC8460792
OpenAlexW3200444947

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.