Ventricular Fibrillation due to Severe Hypokalemia in a Patient with Thyrotoxic Periodic Paralysis

Hypokalemic thyrotoxic periodic paralysis (TPP) is a rare complication of hyperthyroidism. It accompanies episodes of hypokalemia and muscle weakness. In general, hypokalemia, normokalemia, and hyperkalemia can all be observed. There are generally some precipitating factors such as stress, vigorous exercise, and high carbohydrate consumption all of which make way for the occurrence of attacks. The duration of attacks range from 2-36 hours and can be shortened by potassium supplementation. Except for attacks of paralysis, it is a disease that affects totally healthy people. A 31-year-old female patient was admitted to the emergency unit with the complaints of bilateral lower and upper extremity weakness and paralysis. The patient's history and laboratory findings were consistent with our diagnosis of thyrotoxic periodic paralysis. Thyrotoxic periodic paralysis is a rare but life-threatening clinical entity. We would like to present an uncommon case of thyrotoxic periodic paralysis and along with a review the literature. Key words: Thyrotoxicosis; Hypokalemia; Hypokalemic Periodic Paralysis.