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Table 1 Comparison between sodium and potassium disturbances observed in patients hospitalized for HF

From: Hyponatremia during hospitalization and in-hospital mortality in patients hospitalized from heart failure

Type of electrolyte abnormalities Prevalence based on time of occurrence
On admission During hospitalization
Hyponatremia 19 % 22 %
Hypernatremia <1 % 1 %
Hypokalemia 10 % 11 %
Hyperkalemia 7 % 4 %