What is an ECG?
Electrocardiography as its known involves recording electrical potential originating from the heart. These potentials cause the heart muscle to contract and pump blood to the body via the aorta and to the lungs for oxygenation via the pulmonary artery.
These activities can be recorded on an ECG paper in form of waves.
These waves are as follows:
1.P wave represents atrial contraction.
2.QRS complex represents ventricular contraction.
3.T wave represents. ventricular relaxation
4.U wave though not common.- late ventricular relaxation
The identification of these waves is very important
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