A No Alarm on ECG: A Case of Severe Asymptomatic Hyperkalemia with No Significant ECG Changes
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https://doi.org/10.53778/pjkd94323초록
Hyperkalemia usually produces characteristic ECG changes due to its effects on myocardial membrane potential. When these accompany high serum potassium levels, they indicate a medical emergency. However, ECG findings do not always correlate with biochemical severity—sometimes even profound hyperkalemia presents with a normal ECG. We present a case of a 47-year-old woman with chronic kidney disease who exhibited a serum potassium level of over 8 mmol/L yet remained asymptomatic with a normal ECG. This case highlights the diagnostic limitations of ECG in hyperkalemia and emphasizes that management should be guided by biochemical results and clinical context rather than ECG appearance alone.
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