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It is very difficult to judge the tightness of a fundoplication when a surgeon is performing it. At times if it is slightly tighter than required then the person may have some difficulty in vomiting
. These symptoms tend to improve with age also but if the problem is severe then i suggest you revisit your initial surgeon and he may help you that. First thing will be to decide whether it is actually a tight fundoplication or not. If it is tight then a balloon dilatation
may help the child. For both diagnosis and balloon dilatation an endoscopy
will be required. Anyways i hope it is not the case. A stomach virus does not removed in the vomiting. So its not true that if your child has vomiting he will get rid of his virus faster but yes he will feel better symptomatically if he can expel the contents of his stomach with ease. Viruses take their own course to get out our system and the child has to be supported till that time. It may take 3 to 7 days. Anti emetics will helps. Consult a pediatrician
for the same.
Hope that helps solve your query
God bless you