I was diagnosed with inappropriate sinus tachycardia. If I don't take the beta blockers, my rhr stays 140+; would it do damage to not take them?

IST. Ist typically isn't associated with cardiomyopathy - however this is a remote possibility with some patients . With some patients, multiple agents are often needed. In refractory cases, ablation can be considered . Definitely follow closely with your cardiologist .