<s>[INST] The cohort study of coppenhagen city has determined that rbbb is not so benign or innocent in the absence of underlying cause. Please advise if this study is reliable and does it negate all previous studies. Is my benign complete RBBB (as told to me by cardio doc) with qrs : 126 now not benign at all and with bad prognosis as per the new coppenhagen study ?? [/INST] Thank you for your question. The Copenhagen study that you have mentioned found that complete RBBB should lead the treating physician to look for cardiovascular risk factors and try to treat or modify them. Hence, if you follow a healthy lifestyle and diet, keep your blood pressure and blood sugar under check, and exercise regularly I believe you have no cause for too much concern. Just make sure you follow up with your cardiologist so that he can pick up any problems early if they do occur. I hope this helped and has put you at ease. </s>