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Hi, thanks for getting in touch. Unless you have a structural or significant cardiac pathology that's leading to the high heart rates, there isn't really a chance of spontaneous cardiac arrest. What did they diagnose the racing heart beat as?
Understood, thanks for that info. So long as the echo has also been ok and they haven't found anything significant the risk of cardiac arrest is essentially zero.
Sure I understand, cardiologist, UK trained, currently doing phd in the US