Electrocardiogram (ECG) illustration showing a normal QRS axis. The normal frontal QRS axis distribution range is +90 degrees to approximately -30 degrees. This case is +30 degrees, a normal ECG axis. The R-wave amplitudes of lead I and lead II are almost equal. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CHONGQING TUMI TECHNOLOGY LTD |
Taille de l’image : | 3500 px × 4235 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |