I'm familiar with dialysis patients.
If you are thinking of making quilts please make them warm, but light weight to carry. Blood stains are common and the quilts will be washed ALOT so make seams tight and topstitch the binding. No matter how bright and cheery a dialysis center is, it isn't fun. Colorful prints are helpful.
A thought for sewers: Patients wear sweatshirts most of the time and have to split a sleeve to expose their access. A Velcro closure is most helpful.