QuestionSBA
QuestionChoice
This is the correct answer. Amiodarone-induced thyrotoxicosis is a recognized complication. The patient is suffering from symptoms of hyperthyroidism. Amiodarone is rich in iodine which is a compound of thyroid hormone, manifestations can occur in both iodine-deficient and iodine sufficient patients.
10027541
a
Amiodarone
QuestionChoice
This is incorrect. This is an anti-arrhythmic used in the treatment of atrial fibrillation however side effects would mostly likely be arrhythmias and dizziness.
10027543
c
Flecainide
QuestionChoice
This is incorrect. Apixaban is a direct oral anticoagulant medication used to prevent clot formation in atrial fibrillation. This medication is more likely to cause complications such as haemorrhage and anemia.
10027542
b
Apixaban
QuestionChoice
This is incorrect. Digoxin side effects include arrhythmias, conduction disorders, dizziness and vomiting. Overdose can cause gastrointestinal upset, visual symptoms and ECG abnormalities.
10027545
e
Digoxin
QuestionChoice
This is incorrect. Beta-blockers such as propranolol can be used to treat the symptoms of hyperthyroidism.
10027544
d
Bisoprolol
Concept
Chapter
2693
3695
Side effects of amiodarone
Topic
133
Endocrinology
17906
A 55 year old male has recently been started on a medication for their atrial fibrillation. They attend their GP due to heat intolerance, weight loss, diarrhoea and restlessness. They explain they have not been sleeping well recently and they are feeling nervous a lot of the time. Their symptoms began approximately three weeks ago.


On examination the patient appears diaphoretic and has a fine tremor. Their pulse is fast at 115bpm.


A blood test is ordered and results are below:


||||
|---------------------------|:-------:|------------------------------|
|Thyroid Stimulating Hormone|6.7 mU/L|0.3 - 4.2|
|Free T4|30 pmol/L|9 - 25|
|Free T3|10 pmol/L|3.1 - 6.8|

Which of the following medications is most likely to cause this presentation?
a