Outputs (49)

Ex Vivo investigation of a Smart Endotracheal Tube for Identifying Oesophageal Intubation (2025)
Journal Article
Gadsby, B., Korposh, S., Correia, R., He, C., Hayes-Gill, B. R., Norris, A. M., Hardman, J. G., Hewson, D. W., & Morgan, S. P. (2025). Ex Vivo investigation of a Smart Endotracheal Tube for Identifying Oesophageal Intubation. Journal of Biomedical Optics, 30(6), Article 067003. https://doi.org/10.1117/1.JBO.30.6.067003

Significance
Unrecognized intubation of the esophagus instead of the trachea results in rapid and severe consequences for the patient. Utilizing the spectral properties of the tissues could reduce incidents of these events.

Aim
We aim to investi... Read More about Ex Vivo investigation of a Smart Endotracheal Tube for Identifying Oesophageal Intubation.

Thermal blood flowmeter based on cascaded Fabry-Pérot Interferometers utilising the enhanced harmonic Vernier effect (2025)
Journal Article
Gong, R., Morgan, S. P., Korposh, S., He, C., Hayes-Gill, B. R., & Correia, R. (2025). Thermal blood flowmeter based on cascaded Fabry-Pérot Interferometers utilising the enhanced harmonic Vernier effect. Optics and Lasers in Engineering, 194, Article 109145. https://doi.org/10.1016/j.optlaseng.2025.109145

Localised accurate blood flow measurement is crucial in various clinical scenarios for diagnosing and treating vascular conditions. An innovative thermal blood flowmeter that comprises cascaded Fabry-Pérot Interferometer (CFPI) and a multimode fibre... Read More about Thermal blood flowmeter based on cascaded Fabry-Pérot Interferometers utilising the enhanced harmonic Vernier effect.

Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator (2024)
Journal Article
Limweshasin, N., Castro, I. A., Korposh, S., Morgan, S. P., Hayes-Gill, B. R., Faghy, M. A., & Correia, R. (2024). Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator. Sensors, 24(23), Article 7476. https://doi.org/10.3390/s24237476

A respiration rate (RR) monitoring system was created by integrating a Fibre Bragg Grating (FBG) optical fibre sensor into a respirator mask. The system exploits the sensitivity of an FBG to temperature to identify an individual’s RR by measuring air... Read More about Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator.

Comparing peripheral limb and forehead vital sign monitoring in newborn infants at birth (2024)
Journal Article
Swamy, S. K. . N., Stockwell, S. J., Liu, C., Henry, C., Shipley, L., Ward, C., Mirahmadi, S., Correia, R., Morgan, S. P., Crowe, J. A., Sharkey, D., & Hayes-Gill, B. R. (2024). Comparing peripheral limb and forehead vital sign monitoring in newborn infants at birth. Pediatric Research, https://doi.org/10.1038/s41390-024-03651-0

Background: To study the feasibility of measuring heart rate (HR) and oxygen saturation (SpO2) on the forehead, during newborn transition at birth, and to compare these measurements with those obtained from the wrist. Methods: Vital signs were measur... Read More about Comparing peripheral limb and forehead vital sign monitoring in newborn infants at birth.

Exploring the Bias: How Skin Colour Influences Oxygen Saturation Readings via Monte Carlo Simulations (2024)
Journal Article
Swamy, S., Liu, C., Correia, R., Hayes-Gill, B., & Morgan, S. (2024). Exploring the Bias: How Skin Colour Influences Oxygen Saturation Readings via Monte Carlo Simulations. Journal of Biomedical Optics, 29(S3), Article S33308. https://doi.org/10.1117/1.JBO.29.S3.S33308

Significance: Understanding the root cause of reported oxygen saturation (SpO2) overestimation in heavily pigmented skin types to devise solutions toward enabling equity in pulse oximeter design.

Aim: To gain theoretical insights into the effect o... Read More about Exploring the Bias: How Skin Colour Influences Oxygen Saturation Readings via Monte Carlo Simulations.

Exploring the bias: how skin color influences oxygen saturation readings via Monte Carlo simulations (2024)
Journal Article
Narayana Swamy, S. K., Liu, C., Correia, R., Hayes-Gill, B. R., & Morgan, S. P. (2024). Exploring the bias: how skin color influences oxygen saturation readings via Monte Carlo simulations. Journal of Biomedical Optics, 29(S3), Article S33308. https://doi.org/10.1117/1.jbo.29.s3.s33308

Significance: Our goal is to understand the root cause of reported oxygen saturation (SpO2) overestimation in heavily pigmented skin types to devise solutions toward enabling equity in pulse oximeter designs.

Approach: A finger tissue model, compr... Read More about Exploring the bias: how skin color influences oxygen saturation readings via Monte Carlo simulations.

Pilot study on optimizing pressure for standardized capillary refill time measurement (2024)
Journal Article
Ma, Z.-Y., Sun, S., Wu, S.-C., Lin, L., Chen, Y.-X., Zhao, D., & Morgan, S. P. (2024). Pilot study on optimizing pressure for standardized capillary refill time measurement. Heliyon, 10(15), Article e35716. https://doi.org/10.1016/j.heliyon.2024.e35716

Capillary Refill Time (CRT) measurement has gained increasing attention in the field of sepsis and septic shock. Recognizing pressure as a fundamental determinant in CRT measurement is crucial for establishing a standardized CRT measurement procedure... Read More about Pilot study on optimizing pressure for standardized capillary refill time measurement.

Fabrication and assessment of a bio-inspired synthetic tracheal tissue model for tracheal tube cuff leakage testing (2024)
Journal Article
Agbiki, T., Arm, R., Hewson, D. W., Erdody, S., Norris, A. M., Correia, R., Korposh, S., Hayes-Gill, B. R., Shahidi, A., & Morgan, S. P. (2024). Fabrication and assessment of a bio-inspired synthetic tracheal tissue model for tracheal tube cuff leakage testing. BJA Open, 10, Article 100290. https://doi.org/10.1016/j.bjao.2024.100290

Introduction
Leakage of orogastric secretions past the cuff of a tracheal tube is a contributory factor in ventilator-associated pneumonia. Current bench test methods specified in the International Standard for Anaesthetic and Respiratory Equipment... Read More about Fabrication and assessment of a bio-inspired synthetic tracheal tissue model for tracheal tube cuff leakage testing.

Pulse oximeter bench tests under different simulated skin tones (2024)
Journal Article
Swamy, S. K. N., He, C., Hayes‑Gill, B. R., Hayes-Gill, B. R., Clark, D. J., Green, S., & Morgan, S. P. (2025). Pulse oximeter bench tests under different simulated skin tones. Medical and Biological Engineering and Computing, 63, 1931–1942. https://doi.org/10.1007/s11517-024-03091-2

Pulse oximeters’ (POs) varying performance based on skin tones has been highly publicised. Compared to arterial blood gas analysis, POs tend to overestimate oxygen saturation (SpO2) values for people with darker skin (occult hypoxemia). The objective... Read More about Pulse oximeter bench tests under different simulated skin tones.

Highly sensitive optical fibre Bragg grating contact pressure sensor embedded in a polymer layer: modelling and experimental validation (2024)
Journal Article
Abeywardena, C., Zhang, Q., Korposh, S., Morgan, S., Bull, S., & Correia, R. (2024). Highly sensitive optical fibre Bragg grating contact pressure sensor embedded in a polymer layer: modelling and experimental validation. Results in Optics, 14, Article 100604. https://doi.org/10.1016/j.rio.2024.100604

This paper discusses mathematical modelling and experimental validation of a highly sensitive optical fibre Bragg grating (FBG) contact pressure sensor developed for healthcare applications. Bare FBGs are not very sensitive to pressure (~ 3x10-3 nm/M... Read More about Highly sensitive optical fibre Bragg grating contact pressure sensor embedded in a polymer layer: modelling and experimental validation.