New Parameter Available in Phonocardiogram for Blood Pressure Estimation
Continuous and non-invasive measurement of blood pressure (BP) is of great importance. To achieve continuous and cuffless BP monitoring, pulse transit time (PTT) has been reported as a potential parameter. Nevertheless, this approach remains very sensitive, cumbersome and disagreeable for patients. This study proposes a new parameter available in phonocardiogram (PCG) to measure blood pressure. The PCG is processed and analyzed in order to measure the systolic and diastolic durations in order to study their correlation with an estimated PTT. The proposed approach evaluated on a developed data base of 37 subjects shows linear regression of two classes in distribution of diastolic duration with PTT estimated. Where, a good correlation coefficient is found for each class (class1: R = 0.87, class2: R = 0.85. This technic has significant potential to develop a new approach to measure blood pressure using PCG signal.
KeywordsBlood pressure Pulse transit time PPG signal PCG signal Diastolic duration
This research was partially supported by Boumerdes university-Algeria. We thank our colleagues from both Tlemcen university and boumerdes university who provided insight and expertise that greatly assisted the research, although they may not agree with all of the conclusions of this paper.
- 2.Nigam, V., Priemer, R.: Simplicity based gating of heart sounds. In: 2005 48th Midwest Symposium on Circuits and Systems, pp. 1298–1301. IEEE (2005)Google Scholar
- 7.Shukla, S.N., Kakwani, K., Patra, A., Lahkar, B.K., Gupta, V.K., Jayakrishna, A., Vashisht, P., Sreekanth, I.: Noninvasive cuffless blood pressure measurement by vascular transit time. In: 2015 28th International Conference on VLSI Design (VLSID), pp. 535–540. IEEE (2015)Google Scholar
- 9.Yang, X.-L., Hu, W., Yan, H., Xiao, M., Sun, X.: Research progress of noninvasive continuous blood pressure measurements based on pulse wave velocity. Hangtian Yixue yu Yixue Gongcheng 24(6), 467–472 (2011)Google Scholar
- 10.Zhang, X.-Y., Zhang, Y.-T.: Model-based analysis of effects of systolic blood pressure on frequency characteristics of the second heart sound. In: 2006 28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2006, pp. 2888–2891. IEEE (2006)Google Scholar