The role of therapeutic plasmapheresis in patients with hyperthyroidism.

BACKGROUND

Hyperthyroidism is characterized by excess hormone secretion from the thyroid gland. Anti-thyroid drugs (ATDs), surgery, and radioactive iodine can be used in treatment. Plasmapheresis is a rapid and effective treatment option in cases where rapid euthyroidism is needed to be obtained due to complications of thyrotoxicosis and major adverse effects of ATDs.

MATERIAL AND METHOD

We present patients receiving plasmapheresis to provide immediate euthyroidism due to severe hyperthyroidism, adverse effects of ATDs, or non-thyroid surgery from January 2012 to December 2016.

RESULTS

This study included 18 patients. The etiology of hyperthyroidism was TDG in seven patients, TDMNG in two, TA in two, TMNG in four, and one patient had AIT. Plasmapheresis was performed to achieve euthyroidism before surgery in two patients. The mean plasmapheresis session was 5.35. The mean number of sessions needed for patients with TDG and TDMNG was 4, whereas it was 6.5 for patients with TA and TMNG (p = 0.07). The decrease of mean free thyroxine and free triiodothyronine were 57 % and 73 %, respectively (p < 0.001). After plasmapheresis, total thyroidectomy was performed in 14 patients. Euthyroidism was achieved with RAI in one patient and with medical therapy in three patients.

CONCLUSIONS

Plasmapheresis therapy is a reliable and effective treatment option for patients who cannot use ATDs because of their adverse events and those with hyperthyroidism that does not resolve with these drugs, or to achieve euthyroidism before total thyroidectomy, RAI or non-thyroid emergency surgery. However, it cannot be used widely because it is expensive and invasive.