7-year-old, asymptomatic, with ECG obtained for physical demonstrating WPW

Case

Hi thanks for taking my call. I’m a local psychiatrist and I obtained an ECG on this 7-year-old boy who I follow and was recently diagnosed with ADHD. The reading from the ECG machine says it is “abnormal” with a comment at the top saying “Evidence of Ventricular Preexcitation.” The child has been asymptomatic and has never complained of any heart related concerns to my knowledge. I am wondering if it is OK to start him on ADHD medications or if I should have him see you?