ConclusionS -carboxymethylcysteine is effective in the treatment of children with glue ear .
Objective To establish the clinical relevance of S-carboxymethylcysteine in the treatment of glue ear in children using measures approximating those saving a child from operation for grommet insertion .
Risk factors for chronicity in childhood otitis media with effusion.
One hundred and ninety-one children who presented to the author 's clinic with otitis media with effusion ( OME ) over a 2-year period ( 1986 - 1988 ) have been studied prospect ively . Resolution of their OME was considered to have occurred when they had normal findings on  pneumatic otoscopy , tympanometry and audiometry on at least two occasions 6 months apart and had subjectively normal hearing in between . The number of operations performed during the course of the disease was used as a surrogate for chronicity .  Children with a history of previous aural discharge at presentation were significantly more likely to have chronic OME ( P = < 0.02 )
ConclusionS -carboxymethylcysteine is effective in the treatment of children with glue ear .
Objective To establish the clinical relevance of S-carboxymethylcysteine in the treatment of glue ear in children using measures approximating those saving a child from operation for grommet insertion .