If Mr. Gatewood's fluid intake is 1,500 cc and his output is 1,000 cc, what is the appropriate action?

Encouraging fluids is an appropriate action in this scenario because Mr. Gatewood's fluid output is significantly lower than his intake, resulting in a positive fluid balance of 500 cc. This suggests that his body is retaining fluids or that there may be a need for increased hydration based on his overall health status and treatment plan. In cases where output is low, it is often indicated to ensure the patient is receiving adequate hydration, particularly if he shows signs of dehydration or if his condition warrants additional fluid intake.

In this situation, simply decreasing his fluid intake or notifying a dietician might not effectively address the immediate need for hydration. Documenting the findings is important for medical records but does not actively resolve the current fluid balance issue.