SUMMARYBackground: Evaluation of the electrocardiographic and telecardiographic findings of the patients with Eisenmenger syndrome.Methods: Twenty-three patients with the diagnosis of Eisenmenger syndrome, and 20 age, sex, body weight and length matched, healthy controls were included in the study. Electrocardiographic records and telecardiography of both groups were performed.Results: It was found that; 56.5% of the patients with Eisenmenger syndrome had right-axis deviation, 21.7% of the patients left-axis deviation, 17.4% of the patients superior axis and 4.3% of the patients normal axis. Heart rates were not different statistically in the groups (p=0.515). Besides, PR intervals on electrocardiograms of patients with Eisenmenger syndrome were longer than healthy controls (0.138 ± 0.025 seconds for patients with Eisenmenger syndrome, and 0.120 ± 0.017 seconds for healthy controls) (p=0.009). Examination of electrocardiograms of patients with Eisenmenger syndome showed that, 87% of patients had characteristics of right ventricular hypertrophy, and 30% characteristics of right atrial dilatation. Right ventricular conduction delay was observed in 8 patients with Eisenmenger syndrome (34.8%) and only in 1 healthy control (5%) (p=0.024). Evaluation of the telecardiographies of the study population showed that, 20 (90.9%) patients with Eisenmenger syndrome had chest roentgenograms with increased pulmonary vasculature, and prominent main pulmonary artery segment. Cardiothoracic ratios were also found to be higher for these patients (0.561 ± 0.082 for patient with Eisenmenger syndrome and 0.463 ± 0.009 for healthy controls) (p 0.001).Conclusion: All these findings suggest that electrocardiography and telecardiography are the simple tests that can be widely used for evaluation of the children with Eisenmenger syndrome. (Güncel Pediatri 2007; 5: 31-4)Key words: Eisenmenger syndrome, ECG, telecardiography

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