I am sure this topic has been talked about many times before.....I could only find it in reference to peds though. I may have to do an impedance PHprobe, do any of you know much about this. I know what a regular Bravo and Phprobe is, I am not familiar with the impedance part of it. Have any of you adults had nissan fundo and had a bad experience or things I should expect or look out for should I need one. Also, I have tried other things first (ie Nexium, eating schedule, elevating head). Would all of you have done those things first for a while before resorting to surgery. I have tried those things for about a year and have had really no heartburn symptoms until recently and also have some continued tightness in my chest, they think it may be related to acid reflux.