A 25-year-old man who had lost a significant amount of blood due to a stab wound was rushed to a hospital. After running some tests, his doctor found that the hematocrit of the patient was within the...

A 25-year-old man who had lost a significant amount of blood due to a stab wound was rushed to a hospital. After running some tests, his doctor found that the hematocrit of the patient was within the normal range. One day later, after stabilizing his condition and putting him on a continuous intravenous infusion of normal saline, it was noted that his hematocrit had fallen. How could this be explained?