PMC8214346_01
Serial (A) weight and heart rate; (B) thyroid function and TRAb titres and (C) daily dose of oral carbimazole (CMZ) therapy, in a patient with T3-predominant Graves' hyperthyroidism. TSH was suppressed from 11/9/17 to 6/11/17 (8 weeks with low fT4 and normal fT3), further suppressed on 13/12/17 (T3 toxicosis) and went from suppressed to normal from 7/2/18 to 24/3/18 (6 weeks with low fT4 and normal T3).
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The course of her weight, heart rate, thyroid function test (TFT) and CMZ daily dosage are depicted in Figures 1A to C respectively. Over a span of 7 months, her serum TSH showed inappropriate suppressed or inappropriate normal levels when fT4 was low and T3 normal, as well as transient appropriate suppression due to T3 toxicosis (Figure 1B).
Thyroid function profile before and within 24-hours after total thyroidectomy with intravenous levothyroxine 500 mcg loading.
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Her perioperative thyroid function tests in the first 24-hours post total-thyroidectomy are depicted in Figure 2.