when dt4 was added ( patient 1 , 3 mg daily ; patients 2 and 3 , 2 mg daily ) to the same dose of atd , plasma tsh and tg levels fell but were still over the upper limit of normal and thyrotoxicosis persisted as illustrated by a recurrence of atrial fibrillation in one patient .
C0040132
atd
C0040123
tg