RESUMEN
To evaluate seasonal variation in cardiac conductive disorders leading to permanent pacemaker implantation. Conductive disorders of all patients who had implanted cardiac pacemakers during the period from January 2007 to end of March 2009 were evaluated. All conduction disorders in atrial and atrio-ventricular node were included. Statistical analysis was done by SPSS version 13. 627 patients, 346 males and 281 females were included in the study divided into multiple age groups. We recorded seasonal variability in the incidence of conductive disorder with two peaks in months march and June i.e. at the end of winter and end of spring. incidence of conduction disorders which lead pacemaker implantation was higher at the end of Winter and the end of Spring than other seasons. This recorded observation opens the discussion about the etiology and provocation in cardiac conductive disorders