Evidence map›Paper›PMID 36997608›Full record

ArticleNPJ digital medicine2023

Continuous cuffless blood pressure monitoring with a wearable ring bioimpedance device.

Kaan Sel, Deen Osman, Noah Huerta, Arabella Edgar, Roderic I Pettigrew, Roozbeh Jafari

Abstract read
In one paragraph

Article in NPJ digital medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Smart Ring in Clinical Medicine: A Systematic Review.Biomimetics (Basel, Switzerland) · 2025
    Review
  8. Observational
  9. Article
  10. Article
  11. Wireless arm-worn bioimpedance sensor for continuous assessment of whole-body hydration.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  12. Article
  13. Article
  14. Recent Progress in Blood Flow Sensing.Sensors and actuators. A, Physical · 2025
    Article
  15. Review
  16. Review
  17. Review
  18. Review
  19. Review
  20. Review
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.

Kaan SelDepartment of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA.ORCID http://orcid.org/0000-0002-3862-8616
Deen OsmanDepartment of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA.
Noah HuertaDepartment of Mechanical Engineering, Texas A&M University, College Station, TX, USA.
Arabella EdgarDepartment of Biomedical Engineering, Texas A&M University, College Station, TX, USA.
Roderic I PettigrewSchool of Engineering Medicine, Texas A&M University, Houston, TX, USA.ORCID http://orcid.org/0000-0003-0320-8600
Roozbeh JafariDepartment of Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA. rjafari@tamu.edu.ORCID http://orcid.org/0000-0002-6358-0458

Funding

An Unobtrusive Continuous Cuff-less Blood Pressure Monitor for Nocturnal HypertensionR01HL151240 · NHLBI · TEXAS ENGINEERING EXPERIMENT STATION · PI JAFARI, ROOZBEH · 2020 to 2024
$3.5M
SCH: INT: A Context-aware Cuff-less Wearable Ambulatory Blood Pressure Monitor using a Bio-Impedance Sensor ArrayR01EB028106 · NIBIB · TEXAS ENGINEERING EXPERIMENT STATION · PI JAFARI, ROOZBEH · 2018 to 2021
$1.2M
NHLBI NIH HHS R01 HL151240NIBIB NIH HHS R01 EB028106U.S. Department of Health & Human Services | NIH | National Heart, Lung, and Blood Institute (NHLBI) 1R01HL151240U.S. Department of Health & Human Services | NIH | National Institute of Biomedical Imaging and Bioengineering (NIBIB) 1R01EB028106
6 · The paper itself

Abstract

Smart rings provide unique opportunities for continuous physiological measurement. They are easy to wear, provide little burden in comparison to other smart wearables, are suitable for nocturnal settings, and can be sized to provide ideal contact between the sensors and the skin at all times. Continuous measuring of blood pressure (BP) provides essential diagnostic and prognostic value for cardiovascular health management. However, conventional ambulatory BP measurement devices operate using an inflating cuff that is bulky, intrusive, and impractical for frequent or continuous measurements. We introduce ring-shaped bioimpedance sensors leveraging the deep tissue sensing ability of bioimpedance while introducing no sensitivity to skin tones, unlike optical modalities. We integrate unique human finger finite element model with exhaustive experimental data from participants and derive optimum design parameters for electrode placement and sizes that yields highest sensitivity to arterial volumetric changes, with no discrimination against varying skin tones. BP is constructed using machine learning algorithms. The ring sensors are used to estimate arterial BP showing peak correlations of 0.81, and low error (systolic BP: 0.11 ± 5.27 mmHg, diastolic BP: 0.11 ± 3.87 mmHg) for >2000 data points and wide BP ranges (systolic: 89-213 mmHg and diastolic: 42-122 mmHg), highlighting the significant potential use of bioimpedance ring for accurate and continuous estimation of BP.

Identifiers

PMID36997608
PMCPMC10063561

What OpenQuestion holds

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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.