CONCLUSION: Children and adolescents with ADHD receiving methylphenidate showed a higher inflammatory burden and a wider fQRS-T angle than healthy controls. The association of fQRS-T with SII suggests a possible link between low-grade systemic inflammation and subclinical ventricular electrical heterogeneity in this population. However, because of the retrospective cross-sectional design and the inclusion of only methylphenidate-treated patients, these findings should be interpreted cautiously…
