So my 2 year old has svt/ Wolff-Parkinson-white syndrome and miopic atrial tachycardia he has been on 10mg propranolol every 8 hours and his cardiologist from alder hey wants to change him to atenolol 10mg once daily! I’m so scared has anyone done this? I don’t like change, every time he is poorly we end up on hdu. PLEASE HELP