BSSLAB Localized ECG Data

Localized ECG at PCG Auscultation Sites including Respiration Data description: All the data were saved in ‘.mat’ format, and the sampling frequency was 20kHz. There are 12 folders including 12 subjects’ data. In each folder, there are 4 .mat files, named as 2-A, 1-AM, 1-AP, and 1-AT. ‘2’ and ‘1’ means experimental stage I and stage II. ‘A’, ‘P’, ‘T’, and ‘M’ means the measured auscultation sites. ‘AM’ means both two sites PCG and ECG were measured synchronously. Experimental setting: In stage I, three gel electrodes were positioned over the chest of a subject with standard Lead I as reference. The embroidered electrodes were placed next to the gel ones with Lead I as well. The other two simultaneous ECG were recorded with 10 cm inter-electrode distance (IED) at each auscultation site. Two electronic stethoscopes were put at the centre of the electrodes (auscultation points). The recording duration was 3 mins. In the meantime, a microphone was placed under the subjects’ nose to record the actual respiration as a reference. In stage II, three groups of disposable adhesive ECG sensors were placed at A site with 5 cm, 10 cm, and 15 cm IED. The recording duration was also 3 mins. More details and block diagrams can be found in [1, 2, 3]. Channel description: Stage I channels: 1: time 2: Heart Sound at site A 3: Heart Sound at site M, P, or T 4: Respiratory Signal (raw) 5: ECG Reference (Lead I) 6: ECG embroidered 7: ECG at A 8: ECG at M, P, or T. 9. Respiratory Signal (filtered) Stage II channels: 1: time 2. Null 3. Null 4. Respiratory Signal (raw) 5. ECG 5 cm 6. Null 7. ECG 10 cm 8. ECG 15 cm 9. Respiratory Signal (filtered) Reference: Bao, X., Deng, Y., Gall, N. and Kamavuako, E.N., 2020, February. Analysis of ECG and PCG Time Delay around Auscultation Sites. In BIOSIGNALS (pp. 206-213). Bao, X., Howard, M., Niazi, I.K. and Kamavuako, E.N., 2020, July. Comparison between embroidered and gel electrodes on ECG-derived respiration rate. In 2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) (pp. 2622-2625). IEEE. Bao, X., Abdala, A.K. and Kamavuako, E.N., 2020. Estimation of the Respiratory Rate from Localised ECG at Different Auscultation Sites. Sensors, 21(1), p.78.