TY - JOUR
T1 - Comparison of Different Methods for Estimating Cardiac Timings
T2 - A Comprehensive Multimodal Echocardiography Investigation
AU - Dehkordi, Parastoo
AU - Khosrow-Khavar, Farzad
AU - Di Rienzo, Marco
AU - Inan, Omer T.
AU - Schmidt, Samuel Emil
AU - Blaber, Andrew
AU - Sørensen, Kasper
AU - Struijk, Johannes Jan
AU - Zakeri, Vahid
AU - Lombardi, Prospero
AU - Shandhi, Md. Mobashir H.
AU - Borairi, Mojtaba
AU - Zanetti, John M.
AU - Tavakolian, Kouhyar
PY - 2019/8/22
Y1 - 2019/8/22
N2 - Cardiac time intervals are important hemodynamic indices and provide information about left ventricular performance. Phonocardiography (PCG), impedance cardiography (ICG), and recently, seismocardiography (SCG) have been unobtrusive methods of choice for detection of cardiac time intervals and have potentials to be integrated into wearable devices. The main purpose of this study was to investigate the accuracy and precision of beat-to-beat extraction of cardiac timings from the PCG, ICG and SCG recordings in comparison to multimodal echocardiography (Doppler, TDI, and M-mode) as the gold clinical standard. Recordings were obtained from 86 healthy adults and in total 2,120 cardiac cycles were analyzed. For estimation of the pre-ejection period (PEP), 43% of ICG annotations fell in the corresponding echocardiography ranges while this was 86% for SCG. For estimation of the total systolic time (TST), these numbers were 43, 80, and 90% for ICG, PCG, and SCG, respectively. In summary, SCG and PCG signals provided an acceptable accuracy and precision in estimating cardiac timings, as compared to ICG.
AB - Cardiac time intervals are important hemodynamic indices and provide information about left ventricular performance. Phonocardiography (PCG), impedance cardiography (ICG), and recently, seismocardiography (SCG) have been unobtrusive methods of choice for detection of cardiac time intervals and have potentials to be integrated into wearable devices. The main purpose of this study was to investigate the accuracy and precision of beat-to-beat extraction of cardiac timings from the PCG, ICG and SCG recordings in comparison to multimodal echocardiography (Doppler, TDI, and M-mode) as the gold clinical standard. Recordings were obtained from 86 healthy adults and in total 2,120 cardiac cycles were analyzed. For estimation of the pre-ejection period (PEP), 43% of ICG annotations fell in the corresponding echocardiography ranges while this was 86% for SCG. For estimation of the total systolic time (TST), these numbers were 43, 80, and 90% for ICG, PCG, and SCG, respectively. In summary, SCG and PCG signals provided an acceptable accuracy and precision in estimating cardiac timings, as compared to ICG.
KW - cardiac time intervals
KW - echocardiography
KW - impedance cardiography (ICG)
KW - left ventricular ejection time (LVET)
KW - phonocardiography (PCG)
KW - pre-ejection period (PEP)
KW - seismocardiography (SCG)
UR - http://www.scopus.com/inward/record.url?scp=85072217118&partnerID=8YFLogxK
U2 - 10.3389/fphys.2019.01057
DO - 10.3389/fphys.2019.01057
M3 - Journal article
C2 - 31507437
SN - 1664-042X
VL - 10
JO - Frontiers in Physiology
JF - Frontiers in Physiology
M1 - 1057
ER -