Philger, i know you have a hiatus hernia, which is convincing in suggesting you really have reflux but please please consider this simple formula (by the way, I'm in Germany now, that's where my "LPR" started)
The surgery is life changing. You are willing to try that, but you aren't willing to try a few months of lyrica or elavil or both, to see if it's a nerve thing?
Like me, your cold never went away. Mine too. Please type into a search "pregabalin shows promise for the treatment of laryngeal sensory neuropathy"
Consider this logic. I bet you, like me, had no reflux issues before your cold. Your cold started as a virus attacking your throat, you now have throat problems that are ongoing as a direct result. Logically, the problem is in your throat, not your stomach.
The doctors probably refuse the surgery because they know the symptoms in the throat rarely, if ever, resolve for LPR patients who get stomach surgery. Isn't it more logical to think then, that the problem is simply in your throat? What do you have to lose by trying pregabalin for a while. In the ent today article, it details that the symptoms of nerve damage in the throat are globus and/or throat clearing and/or chronic cough.
If you are thinking of having your whole stomach altered, and you don't respond to ppis, and all the acid reflux diets in the world for years don't make a difference, dare to think that it is not reflux. I'm in the same boat with you, and I am convinced this is not reflux at all.
Another article you have to see is 2010 published. It's Laryngeal Sensory Neuropathy and Pharmocologic Management.
If you are willing to try surgery to relieve this, then you should at least try a few months trying out neuropathic drugs to see if it isn't something else, despite your impedence readings or whatever else. For good reason, a lot of gastro intestinal doctors are sceptical of the idea of LPR being used to diagnose all bizzare throat symptoms.
Again. It started in your throat, it continued in your throat. The source of the problem has to be the throat.