conclution about interpretation of arrythmias from ECG
Arrhythmia refers to the abnormal rhythm of heartbeats caused by a defect in the conduction system of the heart. Based on the causes and rhythm, arrhythmias are expressed in ECG.
A normal ECG has a short PQ intervale and a relatively longer R-R interval. However, arrhythmia caused by an atrioventricular blockage in the electrical pathway between atria and ventricle results in slower conduction of nerve impulses through the AV node. This results in a prolonged P-Q interval in ECG.
If ECG has fewer QRS complexes than the P waves, it shows the failure of the conduction of some of the action potential from the SA node to the AV node. It is called second degree AV block.
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