The Influence of Hemodialysis on P-Wave Signal-Averaged Electrocardiogram Findings

: The role of P‐wave signal‐averaged electrocardiography (P‐SAECG) in the prediction of atrial fibrillation (AF) attacks has been validated in various disease states. In the present study, we aimed to investigate the effect of hemodialysis (HD) on P‐SAECG parameters and to determine the related risk factors that might affect those parameters. Ninety‐one HD patients and 68 controls were included. Hemoglobin levels, serum electrolytes, arterial pH, and interdialytic weight changes were assessed. P‐wave duration (PWD) and late potentials of P wave (root‐mean‐square voltage for the last 20 ms of the signal‐averaged P wave [LP20]) were determined by P‐SAECG. Pre‐ and postdialysis PWDs were significantly increased in HD patients than in controls (both P