Figure 1.

Percent death among various degrees of hypernatremia in dogs (A) and cats (B). There is a linear association of increasing case fatality rate with greater hypernatremia P < .0001. Hypernatremia was categorized as borderline (≤5 mmol/L higher than the highest reference concentration), mild (6–10 mmol/L higher than the highest reference concentration), moderate (11–15 mmol/L higher than the highest reference concentration), or severe (≥16 mmol/L higher than the highest reference concentration). The white area of each column represents the percentage of survivors and the black area represents the percentage of death.