Usefulness of continuous renal replacement therapy for correcting hypernatremia in a patient with severe congestive heart failure

Continuous renal replacement therapy (CRRT) is used as an alternative to intermittent hemodialysis (IHD) in patients who have acute kidney injury (AKI) and cannot tolerate IHD. Several studies have reported the usefulness of CRRT in treating sepsis, which is a non-renal indication for CRRT. Recently, CRRT was also introduced as a useful tool for treating severe congestive heart failure (CHF). By using CRRT, we successfully treated hypernatremia in a patient with severe CHF, without observing any fluid overload. Therefore, we report this case to suggest that CRRT should be considered for the treatment of hypernatremia in patients with severe CHF.