Key result
Potassium supplementation and hyperthyroidism treatment led to complete resolution of paralysis and pathologic ECG changes in a patient with thyrotoxic periodic paralysis.
Why the study?
Thyrotoxic periodic paralysis is a rare condition, and the role of serial ECGs as an adjunct to patient improvement is not well documented in previous reports.
Case Report (n=1)
Serial ECGs can serve as a useful adjunct to monitor clinical improvement in patients treated for thyrotoxic periodic paralysis.
Serial ECGs may aid monitoring of treatment response in thyrotoxic periodic paralysis; a single case leaves open need for prospective validation.
Thyrotoxic periodic paralysis (PP) is a rare condition characterized by muscle weakness in the form of hyperthyroidism and hypokalemia. We present the case of a 38-year-old Hispanic male with PP that had been occurring over the course of 4 years. After several emergency department visits, the cause of his symptoms was still unknown. Initial laboratory testing revealed critical hypokalemia with associated electrocardiogram (ECG) changes. Further laboratory evaluation revealed hyperthyroidism, and the diagnosis of thyrotoxic PP was made. The patient received potassium supplementation with complete resolution of his symptoms and resolution of pathologic ECG changes. Our patient was started on propranolol and methimazole to treat his hyperthyroidism. Not well documented in previous reports, we stress the importance of using serial ECGs as an adjunct to patient improvement.
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Mehrdad et al. (2021) conducted a case report in Thyrotoxic periodic paralysis (n=1). Potassium supplementation, propranolol, and methimazole was evaluated on Resolution of symptoms and ECG changes. Potassium supplementation and hyperthyroidism treatment led to complete resolution of paralysis and pathologic ECG changes in a patient with thyrotoxic periodic paralysis.
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