90 yo demented dad straight caths (w/ assist) as indwelling not an option. Worried about night falls walking/standing to cath. Suggestions?

Pull ups!

In general catheters are placed with the patient supine. Some can do this by themselves as long as the anatomy is held at the required right angles. Has this method been tried? If there is a withholding of fluids for several hours before bedtime is it possible that the person can make it through the night? It would be unusual to have the bladder overly full, though for some the nerve triggers to void become too strong. I would speak with the doc and ask if there is visiting nurse online for advice and demonstration. I would also check youtube; I sometimes think there is nothing that doesn't have a youtube film, including how to reuse a TomCat mousetrap! Wishing you good luck.