ok i know that vapotherm is 5-40 l/min via nasal cannula along with nearly 100% humidity delivered at body temperature. but that's basically all i can find out.. it's not in my book. i have a pt that is on this with acute bronchiolitis.. so is vapotherm high or low flow? i have found things ont hte internet that say both so i am very confused. what would be the next step up from vapotherm if his condition worsens? what's so special about vapotherm other than the humidity part? thanks!