Electrocardiographic manifestations of hyperkalemia in hemodialysis patients

Electrocardiographic manifestations of hyperkalemia in hemodialysis patients

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This study was performed to evaluate whether any electrocardiogram (ECG) para-meter can predict the presence of hyperkalemia in patients on maintenance hemodialysis (HD).In January 2006, we conducted a cross-sectional study of 80 stable patients with end-stage renal disease from four university-based HD units of Tehran, Iran, receiving sex shop arles conventional thrice-weekly HD.Pre-HD serum electrolyte values and conventional 12-lead ECG were obtained from each pa-tient.Bivariate linear regression was used for assessing relationship of the study variables with hyperkalemia (K + > 5.2 mg/dL).

Multivariable logistic regression was used for evaluating inde-pendent relationship between decreased T wave duration (≤ 170 ms) and other variables.Bivariate correlation analysis showed a significant inverse correlation between serum potassium concentration and T wave duration (P < 0.05).None of the patients with serum potassium of ≥ 5.6 mg/dL had read more T wave duration > 200 ms.

Multivariate logistic analysis, after adjustment for other factors, also showed a significant relationship between decreased T wave duration (≤ 170 ms) and hyper-kalemia.We conclude that although hyperkalemia does not induce the usual ECG changes in HD patients, decreased T wave duration was found to be a good indicator of this lethal condition.