This topic is about preparing for a first colonoscopy with a new descending-sigmoid colostomy. The person is concerned about managing the high-volume output and avoiding splashing during the bowel prep process. Here are some helpful tips and insights shared by others:

1. Consider using an irrigation sleeve instead of a regular pouch:
- These sleeves can fit many two-piece systems without needing to change the baseplate.
- They are designed to hold a large volume, can be folded up and sealed, and allow you to move around the house rather than being stuck on the toilet.
- Some recommended brands include Dansac, which offers a wider opening and longer length, and Hollister, which provides free samples and reusable options.

2. Adjust your diet to make the prep easier:
- Transition to mostly clear liquids like juices and broth 2 to 3 days before the procedure. Many people find that this helps them be fully cleaned out 24 hours early, making the process smoother.

3. Prepare for potential leaks:
- Use disposable absorbent pads, such as puppy training pads, to line your seating or bedding. This can help protect against any wafer leakage while you are resting.

4. General tips:
- Have a "Plan B" ready, which could include extra supplies or an alternative method for containing output.
- Be prepared for high output similar to irrigation and plan to empty or drain frequently.