Hi I just did a ECG yesterday i.e 21/3/18. The reports showed that I have Sinus tachycardia and incomplete right bundle branch block. I take thyronorm 88mcg as I have hypothyroidism. I also did my
thyroid test in that it my T3- 1.39 T4-11.50 and
TSH-1.110. I want to know how common this problem is and if it is life threatening.