Why the study?
Are specific serum potassium levels within and outside the normal range associated with increased short-term mortality in chronic heart failure patients?
Are specific serum potassium levels within and outside the normal range associated with increased short-term mortality in chronic heart failure patients?
Both abnormal and high/low-normal serum potassium levels are associated with increased short-term mortality in chronic heart failure patients, suggesting a narrower optimal target range.
May prompt reevaluation of potassium targets in chronic HF; hypothesis-generating and should not yet change practice.
Levels within the lower and upper levels of the normal serum potassium range (3.5-4.1 mmol/L and 4.8-5.0 mmol/L, respectively) were associated with a significant increased short-term risk of death in chronic heart failure patients. Likewise, potassium below 3.5 mmol/L and above 5.0 mmol/L was also associated with increased mortality.
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Aldahl et al. (2017) studied this question.
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