Key result
Low-cost Arduino-based dual-sensor PPG system enables real-time local pulse transit time and PWV measurement.
Why the study?
Available technologies capable of monitoring PWV in patients are uncomfortable and obstructive.
Can a low-cost Arduino-based dual-sensor photoplethysmographic monitor feasibly measure local pulse transit time and local pulse wave velocity in the radial and carotid arteries of healthy adults?
Can a low-cost Arduino-based dual-sensor photoplethysmographic monitor feasibly measure local pulse transit time and local pulse wave velocity in the radial and carotid arteries of healthy adults?
Demonstrates the engineering proof-of-concept for an ultra-low-cost (~US$ 30) Arduino-based dual-PPG sensor prototype to non-invasively estimate local pulse transit time and pulse wave velocity at the radial and carotid arteries.
Answers are grounded in this paper and cite their sources.
Hypothesis-generating for low-cost local PWV monitoring; prospective validation required before clinical consideration.
Currently, the available technologies that are capable of monitoring pulse wave velocity (PWV) in a patient are uncomfortable and obstructive. Recently, it has been hypothesized the use of photoplethysmographic (PPG) for this purpose and, therefore, the need to capture and understand the hemodynamic variables used in the PPG signal acquirement process, such as the local pulse transit time (PTT) and local PWV. This work aims to verify the feasibility of the PPG technique in the construction of local PTT and PWV monitor, using PPG sensors and low-cost integrated circuits. In this paper, the low-cost term is used as a synonym for retail sensors, available commercially and commonly used in academic projects for the Arduino platform. It is important for the development of wearable technologies that can be used in a future project to monitor PTT and PWV using a minimally obstructive approach.
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Matheus et al. (2020) studied Healthy adults undergoing pulse wave velocity assessment (n=5). Low-cost Arduino-based photoplethysmographic (PPG) monitor was evaluated on Feasibility of local pulse transit time (PTT) and local pulse wave velocity (PWV) measurement in the radial and carotid arteries. A low-cost Arduino-based photoplethysmographic system using two reflective sensors spaced >2 cm apart feasibly acquired real-time local pulse transit time and pulse wave velocity in 5 healthy adults.
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