Özet:

Periodic thyrotoxic paralysis is a disease characterized by acute hypokalemia, muscle weakness and thyroxoxic triade. There is a case associated with periodic thyrotoxic paralysis. A 21-year-old Afghan man with a sudden developing illness, muscle weakness complaints and applied to emergency service. In the neurological examination, the lower end motor muscle strength proximal 2/5, distal 4/5, the upper end muscle strength proximal 3/5, distal 4/5 was identified. After the potassium level was 2.6 mmol/L and symptomatic, the patient was followed by the start of intravenous (IV) KCL replacement. In thyroid function tests considered for the differentiating diagnosis of hypothesia, obvious hyperthyroidism (TSH: 0.01 IU/Ml sT4: 4.32 ng/dL sT3: 17.4 pg/mL) was detected. ECG also had extended QT, common ST depression, pathological U wave. Symptomatic patients were given potassium replacement IV and oral, while potassium measurements were made at 1, 4 and 12 hours. The 4-hour potassium infusion was stopped after the potassium levels were at the desired level and the patient's symptoms had a dramatic improvement. The patient received 45 mg/day metimazole and 40 mg/day propranolole. Tyrotoxic periodic paralysis is a rare disease, but it can be fatal if not treated.

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