Review Article
Normal P, QRS & T Axis on an Electrocardiogram (ECG) as Seen in Plateau Specialist Hospital, Jos. Central Nigeria
Received Date:August 27, 2020; Published Date:September 14, 2020
Abstract
Background: In making cardiovascular diagnosis, ECG stands out. QRS axis determination is the only considered axis. The P and T axis are most often ignored. Normal values of these axis need further scrutiny.
Materials and Methods: This was a secondary analysis carried out on a study on normal adult ECG in the ECG room of the Plateau State Hospital, Jos Nigeria. A number of normal ECG were reviewed over a 3-month period considering sex, age, PR interval, QTc and the P, QRS and T axis were analyzed. The axis was analyzed in relation to gender and age.
Results: A total of 81 normal ECG recordings with about 70% women with a mean age of 41 years with no significant gender difference were analyzed. Normal P axis (y = 0.07x +49.64) and normal T axis (y = 0.23x =30.08) had a positive relationship with age, while that of the normal QRS axis (y = -0.38x +55.37) was negative.
Conclusions: The normal P, QRS and T axis did not differ with gender. The normal P and T axis appear to increase slightly with age, the QRS axis which is the commonly observed axis appear to decrease with age.
Keywords: Normal P axis; QRS axis; T axis; gender; age
