Key result
Serum potassium strongly correlates with ECG repolarization abnormalities in hyperkalemic CRF patients, permitting level estimation.
Why the study?
The relationship between serum potassium levels and electrocardiographic findings in hyperkalemic patients with chronic renal failure was investigated to clarify correlations.
Do serum potassium levels correlate with electrocardiographic findings in hyperkalemic patients with chronic renal failure on hemodialysis?
Observational
Do serum potassium levels correlate with electrocardiographic findings in hyperkalemic patients with chronic renal failure on hemodialysis?
Serum potassium levels highly correlate with ventricular repolarization abnormalities on ECG in hyperkalemic patients with chronic renal failure, potentially allowing for estimation of potassium levels from ECG findings.
May inform ECG interpretation during hyperkalemia in renal failure; leaves open whether intracellular potassium measures enhance risk stratification.
Simultaneous determinations of serum potassium and sodium, blood pH, blood pressure, and 12-lead electrocardiograms were obtained in hyperkalemic patients with chronic renal failure. Statistical investigation of the data showed a high correlation between serum potassium levels and ventricular repolarization abnormalities. "Mean intracellular potassium concentration" derived from total body potassium and total body water values was not accurate enough to show significant correlations to ECG changes and did not improve on the already significant correlations with serum potassium levels. Equations are presented which would permit the estimation of serum potassium levels (in a narrow range) from electrocardiographic findings in patients with chronic renal failure and suspected hyperkalemia.
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Frohnert et al. (1970) conducted an observational in Chronic renal failure with hyperkalemia. Serum potassium levels was evaluated on Ventricular repolarization abnormalities on 12-lead electrocardiogram. Serum potassium levels highly correlated with ventricular repolarization abnormalities in hyperkalemic patients with chronic renal failure, permitting estimation of potassium levels from ECG findings.
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