An inverted P wave indicates that the pacing point of the heart may not originate from the sinus node.
P wave is a wave of electrical activity representing the contraction of the atria, and normal cardiac impulses are emitted from the sinus node. Since the electrocardiogram cannot record the potential of the sinus node, it is usually necessary to use the morphology of the P wave to determine the location of the origin of cardiac beats, and since the sinus node is located in the right upper side of the right atrium, the normal P wave in the Ⅰ, Ⅱ, and aVF leads is upright, and in the aVR lead is inverted.
If the P wave is not upright but inverted in Ⅰ, Ⅱ, aVF leads, it is a case of inverted P wave, which indicates that the pacing point of the heart may not be originated from the sinus node, but may be located below the sinus node in the atrial muscle to send out impulses, or it may be due to the occurrence of reverse impulses in the junction area.
It is recommended to go to the hospital as soon as possible to clarify the cause of the disease and standardize the diagnosis and treatment under the guidance of professional doctors.