Dehydration is a serious public health concern occurred due to the imbalancebetween water intake and loss which increased in the climate change and Egypt's hot weather, leadto the morbidity and mortality rate raise among the older persons.

To evaluate the effect ofnursing educational program for improving older persons' hydration status.

One group pre-post intervention research design.

The study conducted at the (internalmedicine and urology) clinics at the Assuit University hospitals.

Total number of 130older persons was included. Study tools: Contained four tools; Tool (I): Consisted of four parts;personal data, El-Gilany scale for measurement of socioeconomic status, health condition andknowledge of older persons regarding dehydration. Tool (II): Dehydration screening. Tool (III):Hydration knowledge scale and Tool (IV): Hydration facilitators and barriers attitude.

Mean ± SD and (range) of participant age: 69.28±7.65 (60-91). It was found that, more than half(56.9% &53.1% respectively) of them were male and had very low socioeconomic status. Therewas statistically significant effect of the educational program on the older persons' dehydrationstatus; also there was improvement of older person's hydration & dehydration knowledge andattitude of older persons about hydration facilitators and barriers after the application of theeducational program.

These results support that the nursingeducational program improved the hydration status, hydration & dehydration knowledge andattitude toward hydration facilitators and barriers among older …