Abnormal ECG image, medical diagnosis, electrocardiogram, irregular heartbeat, arrhythmia, ventricular fibrillation, tachycardia, bradycardia, abnormal P-wave, QRS complex, ST segment elevation, T-wave inversion, leads placement, chest electrodes, hospital equipment, metallic texture, high-contrast image, bright white background, 3/4 composition, soft focus, medical illustration style.