Incorrect algorithms. The article “Diagnosis and Management of Sodium Disorders: Hyponatremia and Hypernatremia” (March 1, 2015, p. 299) contained errors in Figure 1 (p. 301) and Figure 2 (p. 304). In Figure 1, the urinary sodium values for hypervolemic hyponatremia were transposed. The algorithm should have showed that urinary sodium < 20 mEq per L may indicate heart failure, cirrhosis, nephrosis, and hypoalbuminemia, whereas urinary sodium > 20 mEq per L may indicate renal failure. Figure 2 should have indicated that desmopressin 1 to 2 mcg every four to six hours should be considered only after the infusion of 3% saline (1 to 2 mL per kg per hour). The corrected figures are printed above and on p. 432, and the online version of the article has been corrected.
Figure 1. Evaluation of Hyponatremia
Algorithm for the evaluation of hyponatremia.
Information from references 11 through 16.
Figure 2. Treatment of Severe Symptomatic Hyponatremia
Algorithm for the treatment of severe symptomatic hyponatremia.
Information from references 13, 14, and 20 through 23.
