T-Peak to T-End Abnormality in Pediatric Patients with Syncope

Objective: the purpose of this study was to examine the relationship between t-peak-to-t-end interval and its dispersion in children with syncope to detect possible repolarization abnormalities in these patients. methods: we enrolled 19 patients with a positive tilt test for syncope (7 boys, 12 girls) and 35 participants with normal results on the test. findings: mean age was 11.4±3.1 years in patients and 10.0±5.1 years in controls (p =0.27). the t- peak-to-tend interval in lead v1 was significantly longer in patients with a positive tilt test (0.36±0.062 vs. 0.32±0.071, p=0.007). t-peak-to-t-end interval dispersion was significantly greater in the group of patients (0.15±0.07 vs. 0.11±0.04, p±0.003). conclusion: the t-peak-to-t-end interval in lead v1 and t-peak-to-t-end dispersion were significantly larger in patients with a positive tilt test. our findings suggest a depolarization abnormality in children with syncope.