Yüzey Elektrokardiyografiden Saptanan P Dalga Dispersiyonu ve Atriyal Fibrilasyon

Özet

P wave dispersion is defined as the difference between the longest and the shortest P wave duration recorded from multiple different surface electrocardiogram leads. P wave dispersion, detected from the surface electrocardiography, have been though to reflect left atrial enlargement and altered conduction. P wave dispersion and P wave maximal duration reflects the activation of atrial muscle and depends primarily upon the mass of tissue excited. These two parameters have been used in the assessment of the risk for atrial fibrillation which is characterized by nonhomogeneous and discontinuous atrial conduction. P wave dispersion has been showed to be influenced by the autonomic nervous system activation, which induces changes in left atrial size and the velocity of impulse conduction. The clinical significance of P wave dispersion has been demonstrated in many clinical conditions, especially in paroxysmal atrial fibrillation. The purpose of this review is to investigate the association between P wave dispersion and atrial fibrillation.