SensSmartTech database of cardiovascular signals synchronously recorded by an electrocardiograph, phonocardiograph, photoplethysmograph and accelerometer

The SensSmartTech database comprises cardiovascular signals synchronously
recorded by electrocardiograph (ECG), phonocardiograph (PCG),
photoplethysmograph (PPG) and accelerometer (ACC) at heart rates at rest and
after activity (HRs). It is composed of 338 30-s recordings taken from 32
healthy volunteers. Recordings contain information from 10 channels: 4 ECG
(limb, V3 and V4 leads), 1 PCG (measured at heart apex), 4 PPG (measured at
carotid and brachial arteries at two light wavelengths each) and 1 ACC
(measured between V3 and V4 ECG electrodes), along with the recording time of
each signal. The original recordings are stored in CSV format. Resampled
recordings are stored in WFDB format. The large HR range with the average
minimum on the set of 83 ± 11 bpm and the average maximum on the set of 143 ±
14 bpm, along with several recordings per heart relaxation period, enable
studying of the cardiovascular dynamics and gaining insights into the
corresponding cardio-respiratory and electro-mechanical couplings. Of
particular clinical significance are the opportunities to derive corrections
of multiparameter biomarkers for HR.

SensSmartTech数据库包含同步采集的心血管信号，这些信号由心电图仪（electrocardiograph）、心音图仪（phonocardiograph）、光电容积描记仪（photoplethysmograph）与加速度计（accelerometer）采集，覆盖静息与活动后两种心率（heart rates, HRs）场景。该数据集共包含338段时长为30秒的记录，数据来自32名健康志愿者。每段记录包含10个通道的信号：4路心电图（ECG，含肢体导联、V3导联与V4导联）、1路心音图（PCG，采集于心尖部位）、4路光电容积描记图（PPG，分别于颈动脉与肱动脉处采集，每种动脉采用两种光照波长）以及1路加速度计（ACC，采集于V3与V4导联心电图电极之间），同时附带各信号的记录时间。原始记录以CSV格式存储，重采样后的记录则采用WFDB格式存储。该数据集的心率覆盖范围较广，集合内平均最低心率为83±11 bpm，平均最高心率为143±14 bpm，且每个心脏舒张周期均对应多段记录，这为研究心血管动力学、深入探究心肺耦合与电机械耦合机制提供了支撑。尤为重要的是，该数据集可用于推导心率相关多参数生物标志物的校正方法，具备重要的临床应用价值。