It is certainly possible that some forms of congenital heart conditions can lead to episodes of wheezing particularly one known as a VSD [ventricular septal defect] It is essential that your paediatrician gives you an absolutely definite statement that your child does not have a heart murmur and the GP mistook his wheezing for a heart murmur. Then,if your son indeed has asthma,he is having too many break through asthma attacks for a child on asthma treatment. His medicine is not holding his asthma adequately and he requires step-up in treatment, probably the addition of a medicine called Singulair. Is he using a spacer with the Flixotide because without a spacer his asthma will not be properly treated?I would recommend that your son be seen by a paediatric pulmonologist.
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