Dynamic modeling and simulation of the human cardiovascular system with PDA

Ortiz-Rangel, Estela; Guerrero-Ramírez, G.V.; Beltrán, Carlos Daniel García; Guerrero-Lara, Marcela; Medina, Manuel Adam; Astorga‐Zaragoza, C.M.; Reyes-Reyes, J.; Posada-Gómez, Rubén

doi:10.1016/j.bspc.2021.103151

Cited by 5 publications

(1 citation statement)

References 29 publications

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“…Every time that the systolic cardiac contraction happens, a certain amount of blood pumps out of the left ventricle of the heart. The amount of blood that is pumped out through this action is called the stroke volume (Ortiz-Rangel et al, 2021). Stroke volume is used to assess cardiac pump function and organ perfusion as well as for assessment of cardiac dysfunction in patients with congestive heart failure (Bruss and Raja, 2021).…”

Section: The Heartmentioning

confidence: 99%

Cuffless Blood Pressure Estimation Using Cardiovascular Dynamics

Samimi

Dajani

2022

2022 International Conference on Electrical, Computer and Energy Technologies (ICECET)

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Blood pressure (BP) monitoring is an important tool for management of hypertension, which is a significant risk for cardiovascular disease and premature death. Since cuff-based BP measurement can be uncomfortable and does not provide continuous readings, several cuffless methods that are typically based on within-beat information or on the pulse transit time (PTT) have recently been investigated. This work proposes a novel cuffless BP estimation approach that mainly uses the information from cardiovascular dynamics of photoplethysmogram (PPG) waveforms.This work is divided into three parts. The first part proposes a calibration-free approach that uses dynamic changes in the pulse waveform. Results from 200 patients showed that the method achieved grade B, in terms of accuracy, for diastolic blood pressure (DBP) based on the British Hypertension Society (BHS) standard and complied with the accuracy requirements of the Association for Advancement of Medical Instrumentation/European Society of Hypertension/International Organization for Standardization (AAMI/ESH/ISO) standard. The second part presents a method based on calibrated cardiovascular dynamics, achieved through a mathematical model that relates reflective PTT (R-PTT) to BP. Results from 30 patients showed a mean error (ME) of 0.58 mmHg, standard deviation of the error (SDE) of 8.13 mmHg, and a mean absolute error (MAE) of 4.93 mmHg for DBP and an ME of 2.52 mmHg, SDE of 12.28 mmHg, and an MAE of 8.82 mmHg for systolic blood pressure (SBP).The third part proposes a calibration-free method that combines morphology features and dynamic changes of the pulse waveform over short intervals. In this method a neural network was trained on 200 patients and tested on never-seen data from 25 other patients and provided an ME of -0.31 mmHg, SDE of 4.89 mmHg, and MAE of 3.32 mmHg for DBP and an ME of -4.02 mmHg, SDE of 10.40 mmHg, and MAE of 7.41 mmHg for SBP. Overall, the results show that cardiovascular dynamics may contribute useful information for cuffless estimation of BP.

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Section: The Heartmentioning

confidence: 99%