Designing and Constructing an Optical System to measure Continuous and Cuffless Blood Pressure Using Two Pulse Signals
TLDR
Monitoring blood pressure continuously and without cuff with the designed system can be recommended as a useful method to indicate cardiovascular diseases and used for personal healthcare purposes.Abstract:
Introduction: Blood pressure (BP) is one of the important vital signs that need to be monitored for personal healthcare. Arterial blood pressure is estimated from pulse transit time (PTT). This study uses two pulse sensors to get PTT. The aim of this study was to construct an optical system and to monitor blood pressure continuously and without cuff in people with different ages. Materials and Methods: To measure blood pressure changes, two infrared optical transmitters were used at the distances of 5 mm to the receivers. Output of the optical receivers was inserted in analog circuits. PTT was defined as the time between the two peaks of pulse signals by the software. Signals were measured continuously through a serial network communication. An external personal computer monitored measured waveforms in real time. BP was related to PTT and the relationship coefficients were calculated at different physical activities. After determining the linear correlation coefficients for each individual, blood pressure was measured by the cuff and the PTT method and the results were compared. Results: PTT computed between the two peaks of wave pulses was strongly correlated with systolic blood pressure (R=0.88±0.034) and the diastolic blood pressure (R=0.82±0.058). Systolic blood pressure (SBP) was measured more accurately than the diastolic blood pressure (DBP). The results of SBP showed that the maximum difference and the error percentages between the cuff method and the present method were 7.98±2.88 and 6.33±2.51, respectively. Moreover, the maximum difference and the percentage errors between the cuff method and the present method of DBP were 10.13±3.82 and 10.97±3.89, respectively. Conclusion: Monitoring blood pressure with the designed system can be recommended as a useful method to indicate cardiovascular diseases and used for personal healthcare purposes.read more
Citations
More filters
Journal ArticleDOI
Machine Learning Approach for Prediction of Hematic Parameters in Hemodialysis Patients
Cristoforo Decaro,Giovanni Battista Montanari,Riccardo Molinari,Alessio Gilberti,Davide Bagnoli,Marco Bianconi,Gaetano Bellanca +6 more
TL;DR: Results of different machine learning algorithms are compared, showing that support vector machine is the best technique for the prediction of hematocrit and oxygen saturation.
Journal ArticleDOI
A New Approach for Blood Pressure Monitoring based on ECG and PPG Signals by using Arti?cial Neural Networks
TL;DR: The results indicated that the BP measurement by cuff method and BP predicted with trained ANN differ by only less than 10%.
Journal Article
Cuff-Less Continuous Blood Pressure Monitoring System Using Pulse Transit Time Techniques
TL;DR: PTT measurement between ECG and PPG signals has potential to be a reliable technique for cuff-less blood pressure measurement and there is weak correlation between PTT2 andBlood pressure measurement which suggests that by excluding the pre-ejection period (PEP) time in PTT calculation may reduce the accuracy of PTT for blood pressure measurements.
Journal ArticleDOI
Functional and Metrological Issues in Arterial Simulators for Biomedical Testing Applications: A Review
TL;DR: The present review study aims to make a contribution by analyzing and classifying the main concerns for the cardiovascular simulators proposed in the literature from a metrological and functional point of view, according to their field of application, as well as for the transducers in the arterial experimental set-ups.
References
More filters
Journal ArticleDOI
Mobile monitoring with wearable photoplethysmographic biosensors
TL;DR: The ring sensor is an ambulatory, telemetric, continuous health-monitoring device that combines miniaturized data acquisition features with advanced photoplethysmographic techniques to acquire data related to the patient's cardiovascular state using a method far superior to existing fingertip PPG sensors.
Journal ArticleDOI
Pulse transit time measured from the ECG: an unreliable marker of beat-to-beat blood pressure
TL;DR: The relationship between rPTT, preejection period (PEP; the R-wave/mechanical cardiac delay), and BP would vary with different vasoactive drugs, but the relationship is not reliable enough to be used as a surrogate marker of SBP, although it may be useful in assessing BP variability.
Journal ArticleDOI
Continuous estimation of systolic blood pressure using the pulse arrival time and intermittent calibration
TL;DR: The results showed that the correlation coefficients between estimated values and invasively obtained systolic blood pressure reached 0.97±0.02, and the error remained within ±10% in 97.8% of the monitoring period.
Journal ArticleDOI
The difference in pulse transit time to the toe and finger measured by photoplethysmography.
TL;DR: E-T PTT and T-F PTTD decreased as functions of the subject's age and systolicBlood pressure (SBP), but their dependence on the diastolic blood pressure (DBP) was not statistically significant.
Journal ArticleDOI
An Evaluation of the Cuffless Blood Pressure Estimation Based on Pulse Transit Time Technique: a Half Year Study on Normotensive Subjects
TL;DR: The results illustrated that in the first and repeatability tests (1) arterial BP increased and PTT decreased acutely after the exercises and (2) systolic BP was highly correlated with PTT.
Related Papers (5)
A comparative review of blood pressure measurement methods using pulse wave velocity
Samaneh Mazaheri,Edmond Zahedi +1 more