ELECTROCARDIOGRAMThe Standard 12-lead Electrocardiogram How to measure each wave: amplitude duration25mm/sELECTROCARDIOGRAM ECG records the changing potential of the field imparted by the heart. ECG dose not record directly the electrical activity of the heart. ECG record the electrical activity of the heart from the body surface. 插入离子通道图片Electrical basis and theoryElectrical basis and theory depolarization dipole repolarizationElectrical basis and theoryElectrical basis and theory qClinical electrocardiolopy elementary knowledge Vector Resultant vector Loop
