1-4 |
RRI(1:4) |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
RR interval of 4 consecutive beats, starting from the 2nd previous beat. |
5 |
RRIavg |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Average of the 10 closest RR intervals. |
6 |
RRIdiv |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Standard deviation of the 10 closest RR intervals. |
7 |
Width |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
Width of the QRS complex. |
8-11 |
Pp e Pn |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
Positive and negative maximum of the QRS in both channels. |
12-17 |
Arp, Arn e Ar |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
Positive area, negative area, and the sum of the two areas under the QRS complex curve in both channels. |
18-21 |
Ima e Imi |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
The time from the onset of the QRS to the maximum and to the minimum value in both channels. |
22-23 |
S1 |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
Slope of the curve from the onset until the first peak of the QRS complex in both channels. |
24-25 |
S2 |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
Slope of the curve from the first peak until the second peak of the QRS complex in both channels. |
26-27 |
difft |
She et al. (2010)She L, Song Y, Zhang S, Xu Z. A precise ambulatory ECG arrhythmia intelligent analysis algorithm based on support vector machine classifiers. In: 3rd International Conference on Biomedical Engineering and Informatics. 2010. USA: IEEE. 708-712. v. 2. http://dx.doi.org/10.1109/BMEI.2010.5640071. http://dx.doi.org/10.1109/BMEI.2010.5640...
|
Time interval between the maximum and the minimum the QRS complex in both channels. |
28-29 |
diffdvt |
She et al. (2010)She L, Song Y, Zhang S, Xu Z. A precise ambulatory ECG arrhythmia intelligent analysis algorithm based on support vector machine classifiers. In: 3rd International Conference on Biomedical Engineering and Informatics. 2010. USA: IEEE. 708-712. v. 2. http://dx.doi.org/10.1109/BMEI.2010.5640071. http://dx.doi.org/10.1109/BMEI.2010.5640...
|
Maximum slope of the QRS curve in both channels. |
30-31 |
diffqrs |
She et al. (2010)She L, Song Y, Zhang S, Xu Z. A precise ambulatory ECG arrhythmia intelligent analysis algorithm based on support vector machine classifiers. In: 3rd International Conference on Biomedical Engineering and Informatics. 2010. USA: IEEE. 708-712. v. 2. http://dx.doi.org/10.1109/BMEI.2010.5640071. http://dx.doi.org/10.1109/BMEI.2010.5640...
|
Amplitude difference between the QRS maximum and minimum in both channels. |
32-51 |
QRS_amost(1:10) |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
10 samples extracted from the center of the QRS complex in both channels. |
52-53 |
P_amp e P_dur |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Amplitude and duration of the P wave. |
54-55 |
T_amp e T_dur |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Amplitude and duration of the T wave. |
56 |
PR_dur |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Duration of the PR interval. |
57 |
QT_dur |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Duration of the QT interval. |
58-77 |
P_amost(1:10) |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
10 samples from the center of the P wave in both channels. |
78-97 |
ST_amost(1:10) |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
10 samples from the center of ST segment in both channels. |
98-99 |
P_area |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Area under the P-wave curve in both channels. |
100-101 |
T_area |
Zhang et al. (2014)Zhang Z, Dong J, Luo X, Choi K, Wu X. Heartbeat classification using disease-specific feature selection. Computers in Biology and Medicine. 2014; 46:79-89. PMid:24529208. http://dx.doi.org/10.1016/j.compbiomed.2013.11.019. http://dx.doi.org/10.1016/j.compbiomed.2...
|
Area under the T-wave curve in both channels. |
102-103 |
No |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
Number of samples with amplitude up to 70% of the maximum value of the signal in both channels. |
104-105 |
Av1 |
Christov et al. (2006)Christov I, Gómez-Herrero G, Krasteva V, Jekova I, Gotchev A, Egiazarian K. Comparative study of morphological and time-frequency ECG descriptors for heartbeat classification. Medical Engineering & Physics. 2006; 28(9):876-87. PMid:16476566. http://dx.doi.org/10.1016/j.medengphy.2005.12.010. http://dx.doi.org/10.1016/j.medengphy.20...
|
Sum of the absolute value of the speed (derivative) of the wave in both channels. |
106 |
Freq |
Saad et al. (2006)Saad NM, Abdullah AR, Low YF. Detection of heart blocks in ECG signals by spectrum and time-frequency analysis. Ïn: 4th Student Conference on Research and Development; 2006. USA: IEEE; 2006. p. 61-65. http://dx.doi.org/10.1109/SCORED.2006.4339309. http://dx.doi.org/10.1109/SCORED.2006.43...
|
Frequency component of higher amplitude in the Fourier transform of the signal. |