Hyponatremia can lead to which of the following problems? 1. Impaired cognitive function 2. Negative effects on gait stability 3. Renal insufficiency 4. Cerebral edema
a. 1 and 3 only
b. 2 and 3 only
c. 1, 2, and 4 only
d. 1, 2, 3, and 4
ANS: C
Once considered to be benign, mild hyponatremia has been shown in recent studies to have a sig-nificant impact on a patient's cognitive function as well as his or her gait stability, it is thought to be a contributing factor in falls. Hyponatremia can lead to cerebral edema due to a change in os-motic pressure.
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