10. Investigations and management
TFT- low T3 , T4 and high TSH
High titres of TPO antibodies
Oral thyroxine (0.1 to 0.2 mg/day) or
triiodothyronine (20mcg tds)
Myxoedema – bolus 500mg of T4 or 10
mcg of T3 oral or IV 4-6 hourly
Corticosteroids and broad spectrum
antibiotics