How can I keep husband from sliding out of bed?

My Moms 18 in rail had a strap that u put round the bed rail on the opposite side of the bed and attached it to the part of the rail that goes under the mattress. U could pull it tight. This helps to keep the bar in place. If you don't have this. Get a long bungy cord with hooks at both ends. Tie the bungy cord on the opposite bedvrail then place the hooks on the part of the railing that goes under the bed.

Thanks for your great suggestions!

What about a hospital bed with pull up rails? Medicare covers them. Why won’t he tolerate your installing the rails after he’s in bed? It sounds like he has some anxiety issues. Maybe a mild anti-anxiety medication would allow him some peaceful sleep.

Can't address the rolling out of bed, but for the tangled linens I'd recommend getting a lightweight comforter/duvet that can be easily washed, or one with a cover that can be removed for washing--no upper sheet, no blanket. My huisband gets all tangled up in sheets and blankets and loves just having the light comforter. He also uses an M-rail on the side of the bed, not so he doesn't roll out but as to help him turn over and get up. I'm not sure if that's what you mean by a bar assist, but the M-rail has long "arms" extending between the mattress and box spring and also straps to hold it in place. It's about 18 inches, but I don't think there's any way my husband could push hard enough against it to roll out (though he deosn't try). It would be good to hang the catheter bag on too.

Could you try a Pool Noodle under the sheet at the edge of the bed. This might give just enough of a hump that he would not roll over it easily,
He could still get into bed as it is not that high to get over if you sit and bring your legs over it but it might be enough of a "bump" that he could not roll over it.

Do you think a wedge would work, again same concept but rolling "up hill" on a wedge would be a bit more difficult. There are different size wedges but you could make your own with some foam from a fabric store that carries upholstery supplies.

You might try raising the legs on his side of the bed, yes the bed would be on a tilt. But again riling up hill would be more difficult than rolling off the bed if it is flat.

An adjustable base on the bed might work, if the head of the bed is raised a bit and the foot raised a bit it might encourage back sleeping so there would be less rolling around.

Last suggestion...I could loan you my 2 cats. One sleeps at my left hip the other at the right thigh. I can not move at all!