Introduction
Thyrotoxicosis is a relatively common endocrine disorder. The prevalence
of hyperthyroidism in the US is 1.3% [1]. Hyperthyroidism and
thyrotoxicosis are different. Hyperthyroidism is characterised by
increased thyroid hormone synthesis and secretion from the thyroid
gland, but thyrotoxicosis refers to the clinical symptoms of excess
circulating thyroid hormones such as thyroiditis, and iodine-induced or
drug-induced thyroid dysfunction. The most common cause of
hyperthyroidism is Graves’ disease [2]. Diagnosis of thyrotoxicosis
is upon clinical examination, laboratory tests, and further
investigation to assist with diagnosing the specific cause and to
arrange necessary treatment. The important issue among patients with
thyrotoxicosis needing an operation is perioperative management and
multidisciplinary care to prevent the thyroid storm that increases
morbidity and mortality [1].