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].