A client prescribed cascara sagrada for diminished colonic motor response should be advised to do which of the following?

Increasing fluid intake is recommended for a client using cascara sagrada, particularly for those experiencing diminished colonic motor response. Cascara sagrada is a natural laxative that works by stimulating the muscles of the intestines, which can enhance bowel movement. However, this can also lead to dehydration if not enough fluids are consumed. Adequate hydration helps to facilitate the passage of stool and may reduce the risk of potential side effects associated with laxative use, such as cramping or diarrhea.

Fluid intake is crucial because it aids in softening the stool and supports the overall digestive process, especially when using a stimulant laxative like cascara sagrada. This approach helps maintain intestinal health and contributes to more effective bowel regulation.

The other options do not align as well with the management of diminished colonic motor response or the use of laxatives. Low-fiber foods can exacerbate constipation, while low potassium foods are not directly relevant to managing bowel motility. Similarly, changes in urine color, such as turning yellow-brown, are generally not a typical concern needing immediate medical attention for patients using cascara sagrada, making fluid intake the most critical recommendation.