Well from what you are describing there are a few possibiluties which can cause your symptoms. It is true that you COULD have gastroparesis however the gastric emptying tests numbers are certainly not very concerning. The last test showed that you are only 5% over as you pointed out which usually doesnt mean that you have severe gastroparesis or even gastroparesis at all. If your symptoms persist or get worse after a couple of months, this test can be repeated then and compared to your original test. this will allow us to say definitively whether or not your have gastroparesis.
Even if you do have gastroparesis, there are several treatments which can help here. Medications in mild cases can be very effective. you can be started on domperidone or erythromycin etc which can help in improving teh motility. This diagnosis does NOT mean that you will vomit the rest of your life or will need feeding tubes, it simply means that you will need some medications. Many people are diagnosed with this and an OVERWHELMING majority are treated with drugs and remain perfectly fine, only a small minority develop severe form of teh disease.
Now apart from this it is possible that your h.pyroli and gastritis has not been treated. Some cases can require repeat treatment either due to an increased load of the organism or even due to resistance of the organism to the antibiotics. if this is the case then you can be started on another regimen to control the symptoms. Secondly the gastritis can persist even if the h.pyroli has been cleared out, inflammation of the lining of the stomach will take atleast 4 weeks to get back down to normal. During this time you will need drugs liek omeprazole, pantoprazole on a daily basis. if omeprazole isnt working you can be shifted to rabeprazole or dexilant which are much stronger.
Lastly this can also be due to a small benign gastrin producing tumor in the pancreas which can cause gastritis and ulcers in the stomach. if your gastritis does not respond to normal therapy then you will need a CT scan of the abdomen and serum gastrin levels to rule this condition out. It again is curable with surgery.
So in short you should NOT be worried all of the possibilities here have a solution although it may take some time.
Do you have any more questions?
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