Faculty of Medicine, Aalborg University, Aalborg, Denmark.
Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark.
Biomed Phys Eng Express. 2024 Aug 13;10(5). doi: 10.1088/2057-1976/ad6a67.
. This study aimed to investigate the correlation between seismocardiographic and echocardiographic systolic variables and whether a decrease in preload could be detected by the seismocardiography (SCG).. This study included a total of 34 subjects. SCG and electrocardiography were recorded simultaneously followed by echocardiography (echo) in both supine and 30head-up tilted position. The SCG signals was segmented into individual heartbeats and systolic fiducial points were defined using a detection algorithm. Statistical analysis included correlation coefficient calculations and paired sample tests.. SCG was able to measure a decrease in preload by almost all of the examined systolic SCG variables. It was possible to correlate certain echo variables to SCG time intervals, amplitudes, and peak to peak intervals. Also, changes between supineand tilted position of some SCG variables were possible to correlate to changes in echo variables. LVET, IVCT, S', strain, SR, SV, and LVEF were significantly correlated to relevant SCG variables.. This study showed a moderate correlation, between systolic echo and systolic SCG variables. Additionally, systolic SCG variables were able to detect a decrease in preload.
. 本研究旨在探讨心震图（SCG）和超声心动图收缩变量之间的相关性，以及是否可以通过心震图（SCG）检测前负荷降低。. 本研究共纳入 34 名受试者。在仰卧位和 30°头高位同时记录 SCG 和心电图，随后进行超声心动图检查。使用检测算法将 SCG 信号分段为单个心跳，并定义收缩期基准点。统计分析包括相关系数计算和配对样本检验。. SCG 几乎可以通过所有检查的收缩期 SCG 变量来测量前负荷的降低。可以将某些超声心动图变量与 SCG 时间间隔、幅度和峰峰值间隔相关联。此外，某些 SCG 变量在仰卧位和倾斜位之间的变化也可以与超声心动图变量的变化相关联。LVET、IVCT、S'、应变、SR、SV 和 LVEF 与相关的 SCG 变量显著相关。. 本研究显示，收缩期超声心动图和收缩期 SCG 变量之间存在中等程度的相关性。此外，收缩期 SCG 变量能够检测前负荷降低。
