Actually, that's not true. Nissen remains the gold standard for treating reflux. The LINX is not as successful. Actually there are others here who have had it and will be getting a Nissen. Of course, there is some success, and you could be in that percentile, but it's not as likely as Nissen to do the job.
Here's a link from a medical center in the US:www.umm.edu/general_surgery/nissen_fundo.htm
If you scroll to the bottom it tells you:What are the success rates for this surgery/procedure?
"The success rate for the minimally invasive surgery is 90 to 95 percent for patients who have the typical symptoms of GERD, such as heartburn, regurgitation, or belching. For those whose with less typical symptoms, including hoarseness and chronic cough, the surgery is about
70 to 80 percent effective at relieving their symptoms."
Yours would be the 70-80%, since asthma is an atypical GERD condition.
The #1 most important thing you can do to ensure that your Nissen surgery is successful is to find a surgeon who has done 300+ to 1000 or more surgeries. This surgery (done laproscopically) has a great success rate with experienced surgeons, but some fine surgeons who aren't as experienced can cause a LOT of problems.
The first thing, though, would be to have the tests to find out if your problem is actually caused by reflux. Otherwise the surgery (either LINX or Nissen) is unnecessary and can certainly cause you some problems.
You need to find the surgeon in your area who has done the most Nissen surgeries. In my city there is one they call "the surgeon who does all the Nissens". That would be the one to do it.
Now that it has become a laproscopic surgery, it has narrowed down the number of surgeons doing the procedure, which is a good thing, since it is an art form.
Since the advent of PPIs, the number of Nissen surgeries has plummeted. Before PPI's it was the only way to improve reflux symptoms. They don't do many surgeries now, because most people respond well to PPI's and it is not necessary.
If you find a good surgeon and he does all the correct testing, he will not touch you unless you are a good candidate for the surgery. The testing is critical, though, so now's the time to learn some relaxation techniques and figure out a way you can get through them. You can do it.
Good luck with your decision. Be sure that you make it intelligently. Do lots of reading and find the right docs.