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Innovation in Biomedical Science and Engineering

Implementation of automatic external defibrillator using real time ventricular fibrillation detecting algorithm based on time domain analysis

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Figures & data

Figure 1. (a) Normal ECG, (b) Ventricular fibrillation, (c) primary differential of normal ECG, and (d) primary differential value of Ventricular fibrillation.

Figure 1. (a) Normal ECG, (b) Ventricular fibrillation, (c) primary differential of normal ECG, and (d) primary differential value of Ventricular fibrillation.

Figure 2. Analysis of phase space reconstruction with (a) ECG and (b) primary differential of ECG.

Figure 2. Analysis of phase space reconstruction with (a) ECG and (b) primary differential of ECG.

Figure 3. (a) Labview script for estimating the optimum value of tau and (b) its execution screen.

Figure 3. (a) Labview script for estimating the optimum value of tau and (b) its execution screen.

Figure 4. Simulation results of (a) proposed algorithm on FPGA, (b) diagram of register transfer level, and (c) fabricated signal processing board.

Figure 4. Simulation results of (a) proposed algorithm on FPGA, (b) diagram of register transfer level, and (c) fabricated signal processing board.

Figure 5. The pictures of (a) ICD lead on coronary fluoroscopy, (b) the pig with electrodes, (c) ventricular fibrillation signal, and (d) electric shock/recovered ECG.

Figure 5. The pictures of (a) ICD lead on coronary fluoroscopy, (b) the pig with electrodes, (c) ventricular fibrillation signal, and (d) electric shock/recovered ECG.