If i had a normal echocardiogram, does that rule out arrhythmogenic right ventricular dysphasia? does it require further testing?

Depends on the circumstances: 90% of people with a Arvd have some Ekg abnormality the most common finding is T-wave inversion in Leeds V one V2 and v3 however this can be a normal variant. The "epsilon wave" is found in only 50% of patients but is a characteristic findi g Depending on other clinical findings and symptoms other tests can be use such as signal average EKG or an electrophysiology study in order to diagnose this condition