RICARDO GONCALVES CORREIA's Outputs (20)

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.

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., …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.

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.

Long Period Grating Mach–Zehnder Interferometer Based Immunosensor with Temperature and Bulk Refractive Index Compensation (2022)
Journal Article
Wu, P., Liu, L., Morgan, S. P., Correia, R., & Korposh, S. (2022). Long Period Grating Mach–Zehnder Interferometer Based Immunosensor with Temperature and Bulk Refractive Index Compensation. Biosensors, 12(12), Article 1099. https://doi.org/10.3390/bios12121099

A long period grating Mach–Zehnder interferometer (LPGMZI) that consists of two identical long period gratings (LPGs) in a single fibre was developed to measure immunoglobulin M (IgM). The measured spectrum has fringes due to the interference between... Read More about Long Period Grating Mach–Zehnder Interferometer Based Immunosensor with Temperature and Bulk Refractive Index Compensation.

Fibre Bragg Grating Based Interface Pressure Sensor for Compression Therapy (2022)
Journal Article
Bradbury, J. A., Zhang, Q., Hernandez Ledezma, F. U., Correia, R., Korposh, S., Hayes-Gill, B. R., …Morgan, S. P. (2022). Fibre Bragg Grating Based Interface Pressure Sensor for Compression Therapy. Sensors, 22(5), Article 1798. https://doi.org/10.3390/s22051798

Compression therapy is widely used as the gold standard for management of chronic venous insufficiency and venous leg ulcers, and the amount of pressure applied during the compression therapy is crucial in supporting healing. A fibre optic pressure s... Read More about Fibre Bragg Grating Based Interface Pressure Sensor for Compression Therapy.

Intra-tracheal multiplexed sensing of contact pressure and perfusion (2021)
Journal Article
Correia, R., Gadsby, B., Korposh, S., Norris, A. M., Hayes-Gill, B. R., Sinha, R., …Morgan, S. P. (2022). Intra-tracheal multiplexed sensing of contact pressure and perfusion. Biomedical Optics Express, 13(1), 48-64. https://doi.org/10.1364/BOE.442165

Incorrect endotracheal tube (ETT) cuff inflation pressure causes significant problems for intubated patients. The technical development and first in vivo use of a smart ETT for measurements at the cuff-trachea interface during mechanical ventilation... Read More about Intra-tracheal multiplexed sensing of contact pressure and perfusion.

Optical Fibre Sensor for Capillary Refill Time and Contact Pressure Measurements under the Foot (2021)
Journal Article
Ballaji, H. K., Correia, R., Liu, C., Korposh, S., Hayes-Gill, B. R., Musgrove, A., & Morgan, S. P. (2021). Optical Fibre Sensor for Capillary Refill Time and Contact Pressure Measurements under the Foot. Sensors, 21(18), Article 6072. https://doi.org/10.3390/s21186072

Capillary refill time (CRT) refers to the time taken for body tissue to regain its colour after an applied blanching pressure is released. Usually, pressure is manually applied and not measured. Upon release of pressure, simple mental counting is typ... Read More about Optical Fibre Sensor for Capillary Refill Time and Contact Pressure Measurements under the Foot.

Optical fibre Sensor for Simultaneous Temperature and Relative Humidity Measurement: Towards Absolute Humidity Evaluation (2021)
Journal Article
He, C., Korposh, S., Correia, R., Liu, L., Hayes-Gill, B. R., & Morgan, S. P. (2021). Optical fibre Sensor for Simultaneous Temperature and Relative Humidity Measurement: Towards Absolute Humidity Evaluation. Sensors and Actuators B: Chemical, 344, Article 130154. https://doi.org/10.1016/j.snb.2021.130154

Temperature and humidity are essential parameters in monitoring the health of patients in critical care. An optical fibre sensor has been developed for simultaneous measurement of relative humidity (RH) and temperature at a single optical fibre tip b... Read More about Optical fibre Sensor for Simultaneous Temperature and Relative Humidity Measurement: Towards Absolute Humidity Evaluation.

Non-invasive cuff-less blood pressure estimation using a hybrid deep learning model (2021)
Journal Article
Yang, S., Zhang, Y., Cho, S.-Y., Correia, R., & Morgan, S. P. (2021). Non-invasive cuff-less blood pressure estimation using a hybrid deep learning model. Optical and Quantum Electronics, 53(2), Article 93. https://doi.org/10.1007/s11082-020-02667-0

Conventional blood pressure (BP) measurement methods have different drawbacks such as being invasive, cuff-based or requiring manual operations. There is significant interest in the development of non-invasive, cuff-less and continual BP measurement... Read More about Non-invasive cuff-less blood pressure estimation using a hybrid deep learning model.

Development and validation of a novel fibre-optic respiratory rate sensor (FiRRS) integrated in oxygen delivery devices (2021)
Journal Article
Sinha, R., Hernandez, F., He, C., Korposh, S., Correia, R. N. G., Norris, A., …Morgan, S. P. (2021). Development and validation of a novel fibre-optic respiratory rate sensor (FiRRS) integrated in oxygen delivery devices. Journal of Physics D: Applied Physics, 54(12), Article 124002. https://doi.org/10.1088/1361-6463/abd061

© 2021 The Author(s). Respiratory rate (RR) monitoring provides crucial information on the overall health condition of patients and a reliable, low cost RR monitor for normal hospital inpatient or home use would be of significant benefit. The propose... Read More about Development and validation of a novel fibre-optic respiratory rate sensor (FiRRS) integrated in oxygen delivery devices.

A Textile Sleeve for Monitoring Oxygen Saturation Using Multichannel Optical Fibre Photoplethysmography (2020)
Journal Article
Ballaji, H. K., Correia, R., Korposh, S., Hayes-Gill, B. R., Hernandez, F. U., Salisbury, B., & Morgan, S. P. (2020). A Textile Sleeve for Monitoring Oxygen Saturation Using Multichannel Optical Fibre Photoplethysmography. Sensors, 20(22), Article 6568. https://doi.org/10.3390/s20226568

Textile-based systems are an attractive prospect for wearable technology as they can provide monitoring of key physiological parameters in a comfortable and unobtrusive form. A novel system based on multichannel optical fibre sensor probes integrated... Read More about A Textile Sleeve for Monitoring Oxygen Saturation Using Multichannel Optical Fibre Photoplethysmography.

Optical fibre sensor for simultaneous measurement of capillary refill time and contact pressure (2020)
Journal Article
Liu, C., Correia, R., Ballaji, H., Korposh, S., Hayes‐gill, B., & Morgan, S. (2020). Optical fibre sensor for simultaneous measurement of capillary refill time and contact pressure. Sensors, 20(5), Article 1388. https://doi.org/10.3390/s20051388

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The widely applied capillary refill time (CRT) measurement is currently performed by manually applying pressure and using a stopwatch to record the time taken for the skin to recover its norma... Read More about Optical fibre sensor for simultaneous measurement of capillary refill time and contact pressure.

Optical Fibre-Based Pulse Oximetry Sensor with Contact Force Detection (2018)
Journal Article
Liu, C., Correia, R., Ballaji, H., Korposh, S., Hayes-Gill, B., & Morgan, S. (2018). Optical Fibre-Based Pulse Oximetry Sensor with Contact Force Detection. Sensors, 18(11), Article 3632. https://doi.org/10.3390/s18113632

Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score (2018)
Journal Article
Sinha, R., Correia, R., Gardner, D., Grau-Roma, L., de Brot, S., Hardman, J., Morgan, S., & Norris, A. (2018). Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score. Laryngoscope Investigative Otolaryngology, 3(4), 257-262. https://doi.org/10.1002/lio2.168

Objectives: Postintubation laryngotracheal injury is common. Assessment of histopathological changes currently requires animal models. We set about developing a viable, resource effective animal model to study these effects and to develop a detailed... Read More about Mucosal injury following short term tracheal intubation: a novel animal model and composite injury score.

Biomedical application of optical fibre sensors (2018)
Journal Article
Correia, R., James, S., Lee, S.-W., Morgan, S., & Korposh, S. (2018). Biomedical application of optical fibre sensors. Journal of Optics, 20(7), Article 073003. https://doi.org/10.1088/2040-8986/aac68d

Optical fibre sensors(OFS), as a result of their unique properties such as small size, no interference with electromagnetic radiation, high sensitivity and the ability to design multiplexed or distributed sensing systems, have found applications rang... Read More about Biomedical application of optical fibre sensors.

Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment (2017)
Journal Article
Gomez, D., Morgan, S. P., Hayes-Gill, B. R., Correia, R., & Korposh, S. (2018). Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment. Sensors and Actuators B: Chemical, 254, 887-895. https://doi.org/10.1016/j.snb.2017.07.191

The sensitivity of a low-cost polymeric optical fibre humidity sensor based on transmittance changes due to evanescent wave absorption is reported using test measurements in an environmental chamber and of the skin. The layer-by-layer method was used... Read More about Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment.

Development and application of optical fibre strain and pressure sensors for in-flight measurements (2016)
Journal Article
Lawson, N. J., Correia, R., James, S. W., Partridge, M., Staines, S. E., Gautrey, J. E., …Tatam, R. P. (2016). Development and application of optical fibre strain and pressure sensors for in-flight measurements. Measurement Science and Technology, 27(10), 1-17. https://doi.org/10.1088/0957-0233/27/10/104001

Fibre optic based sensors are becoming increasingly viable as replacements for traditional flight test sensors. Here we present laboratory, wind tunnel and flight test results of fibre Bragg gratings (FBG) used to measure surface strain and an extrin... Read More about Development and application of optical fibre strain and pressure sensors for in-flight measurements.

Fiber Segment Interferometry for Dynamic Strain Measurements (2016)
Journal Article
Kissinger, T., Correia, R., Charrett, T. O. H., James, S. W., & Tatam, R. P. (2016). Fiber Segment Interferometry for Dynamic Strain Measurements. Journal of Lightwave Technology, 34(19), 4620-4626. https://doi.org/10.1109/jlt.2016.2530940

Using a novel range-resolved interferometric signal processing technique based on the sinusoidal optical frequency modulation of a cost-effective laser diode, a fiber sensing approach termed fiber segment interferometry (FSI) is described. In FSI, a... Read More about Fiber Segment Interferometry for Dynamic Strain Measurements.

Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor
Presentation / Conference Contribution
Hernandez, F., Correia, R., Morgan, S., Hayes-Gill, B., Evans, D., Sinha, R., Norris, A., Harvey, D., Hardman, J., & Korposh, S. Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor. Presented at Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), Limerick, Ireland

An optical fibre sensor for simultaneous temperature and humidity measurements consisting of one fibre Bragg grating (FBG) to measure temperature and a mesoporous film of bilayers of Poly(allylamine hydrochloride)(PAH) and silica (SiO2) nanoparticles... Read More about Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor.