Hi @hello1234, I used water proof tegaderm to over the area around CVC. I got one of those that comes in rolls and cut to fit size. I usually double over where the catheter insertion is just to be safe. After the shower, I make sure to clean all parts of the catheter really well with alcohol(wear gloves and mask), placing the cleaned portion on gauze. You can also use Alcavis to clean. Then I clean the flesh all around the catheter with ExCept, let air dry then place a new tegadterm(cut for CVC) around the catheter, and keeping the wings anchored down. You'll have to buy these Tegaderms made to fit CVCs. Take both lumens and wrap them in gauze put flexible netting over the gauze to keep it from unravelling. The last time I did all this was over 8 months ago. I used to go on autopilot doing it. Now is like I'm having trouble remembering the steps!
Some people cut up ziplock bags to cover the CVC but I have never found them to be useful because none of the tapes I used stick to the flesh very well. Tegaderm works but costly. I'm sure you can ask the registered nurse at the dialysis center for more suggestions. Some wear a beautican cape to cover up the breast bone so they can wash hair in the shower. There is a bunch of suggestions on https://www.facebook.com/groups/HomeDialysisCentral/