# The Multi-Branch Deep-Learning-Based Approach to Heart Dysfunction Classification
## Abbreviations  
The following abbreviations are used in this manuscript:  
\begin{tabular}{l l} CVD & Cardiovascular Disease \\ LSTM & Long Short-Term Memory \\ GRU & Gated Recurrent Unit \\ N-BEATS & Neural Basis Expansion Analysis for Time Series Forecasting \\ ECG & Electrocardiogram \\ FC & Fully Connected \\ RNN & Recurrent Neural Network \\ CNN & Convolutional Neural Network \\ WRN & Wide Residual Network \\ SNIP & Statistics-sensitive Non-linear Iterative Peak-clipping \\ ReLU & Rectified Linear Unit \\ PCA & Principal Component Analysis \\ CinC & Computing in Cardiology \\ AF & Atrial fibrillation \\ AFL & Atrial flutter \\ BBB & Bundle branch block \\ \end{tabular}  
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Network** & **Paper** & **Challenge Score** \\ \hline ResNet (CNN) & [8] & 0.58 \\ WRN (CNN) & [10] & 0.55 \\
2-branch CNN & [11] & 0.55 \\ Channel-Attention CNN & [12] & 0.55 \\ ResNet (CNN) & [13] & 0.52 \\ Multibranch LSTM (RNN) & (this paper) & 0.49 \\ Bidirectional LSTM (RNN) & [52] & 0.36 \\ \hline \hline \end{tabular}
\end{table}
Table 13: Comparison of state-of-the-art solutions for CinC 2021 Challenge dataset on 12-lead ECG classification with proposed solution. The first five places were obtained by different CNN variants.  
\begin{tabular}{l l} Brady & Bradycardia \\ CLBBB & Complete left bundle branch block \\ CRBBB & Complete right bundle branch block \\ IAVB & 1 st degree av block \\ IRBBB & Incomplete right bundle branch block \\ LAD & Left axis deviation \\ LAnFB & Left anterior fascicular block \\ LBBB & Left bundle branch block \\ LQRSV & Low qrs voltages \\ NSVCB & Nonspecific intraventricular conduction disorder \\ NSR & Sinus rhythm \\ PAC & Premature atrial contraction \\ PR & Pacing rhythm \\ PRWP & Poor r wave progression \\ PVC & Premature ventricular contractions \\ LPR & Prolonged pr interval \\ LQT & Prolonged qt interval \\ QAb & Qwave abnormal \\ RAD & Right axis deviation \\ RBBB & Right bundle branch block \\ SA & Sinus arrhythmia \\ SB & Sinus bradycardia \\ STach & Sinus tachycardia \\ SVPB & Supraventricular premature beats \\ TAB & T wave abnormal \\ TInv & T wave inversion \\ VPB & Ventricular premature beats \\ abQRS & Abnormal qrs \\ AJR & Accelerated junctional rhythm \\ ALR & Suspect arm ecg leads reversed \\ AMI & Acute myocardial infarction \\ AMIs & Acute myocardial ischemia \\ AnMIs & Anterior ischemia \\ AnMI & Anterior myocardial infarction \\ AB & Atrial bigeminy \\ AFAFL & Atrial fibrillation and flutter \\ AH & Atrial hypertrophy \\ AP & Atrial pacing pattern \\ ATach & Atrial tachycardia \\ AVB & Av block \\ AVJR & Atrioventricular junctional rhythm \\ AVNRT & Atrioventricular node reentrant tachycardia \\ AVRT & Atrioventricular reentrant tachycardia \\ BPAC & Blocked premature atrial contraction \\ BTS & Brady tachy syndrome \\ CAF & Chronic atrial fibrillation \\ CCR & Counterclockwise rotation \\ CD & Cardiac dysrhythmia \\ CHB & Complete heart block \\ CIAHB & Congenital incomplete atrioventricular heart block \\ CHD & Coronary heart disease \\ CMI & Chronic myocardial ischemia \\ CR & Clockwise rotation \\ DIB & Diffuse intraventricular block \\ \end{tabular}