thank you for query
As it is the case with every operation, the use of anesthetics may cause complications for the heart and lungs.
It is normal for some liquid, possibly blood-tinged, to drain out of the ear. However if this persists for more than two days and if the discharge becomes thick, greenish or yellow and smelly, it may be a sign of infection. Fever
is another sign of a possible infection.
Infections can be serious because they can progress, affecting the surrounding tissue and moving towards the brain.
In some cases, the fluid build-up can recur which means an additional surgery will be required. In two or three percent of cases the insertion and removal of the grommet leaves a permanent hole in the ear drum. In these cases a surgical procedure is required to close the hole.