My mom has bronchiectasis and she has a lot of trouble sleeping. She wakes up coughing, and has to cough for about thirty minutes to clear her lungs. I've been wondering if an adjustable mattress would help her. Maybe something that tilts her up a little so that the mucus doesn't have a chance to pool in her lungs? But I'm way out of my depth here. Has anyone tried adjustable beds? how did it work for you and do you have any recommendations for brands?