Whats risk of complications from ear tubes in child?

Few: Small risk from the anesthesia. The tubes can fall out too soon (they usually stay in a year). The tubes can become a place where bacteria accumulate and grow (sometimes they have to be removed or replaced). After tubes come out there can be a residual hole in the eardrum (perforation). The hole will usually close spontaneously, but sometimes need surgery to help it.

Ear tubes: Complications from ear tube placement are rare....However one occasiionally see non-healing of the ear drum after the tube falls which may then require patching.