<prompt> A 65-year-old woman presents to her GP complaining of low mood.She repos a past medical history of atrial fibrillation and type 2 diabetes. Clinical examination reveals cool peripheries and a pulse of 45 bpm. Thyroid function tests TFTs show the following: TSH:6.5 mUL 0.4-4.0 mUL T4:4 pmolL 9-24 pmolL Which of the following is the most likely cause of this patients symptoms?Drug induced hypothyroidismHashimotos ThyroiditisSecondary hypothyroidismTeiary hypothyroidism  <response>: In question : TSH T4 Bradycardia suggestive of 1o Hypothyoidism Option C- Pituitary damaged TSH T3 T4 Option D- Hypothalamus is damaged TRH TSH In the question given history of Atrial fibrillation so 2 drugs given for it AMIODORONE IBUTILIDE SE : drug induced hypothyroidism 