The surgery is done under general anesthesia, and this is usually the most frightening part of the procedure for parents. Modern pediatric anesthesia is extremely safe. It is given in a well monitored setting by a trained professional, in pediatric patients usually an anesthesiologist specializing in the care of children. There will be time before the surgery for patients and parents to speak with the anesthesiologist and ask specific questions. Lesser degrees of anesthesia (such as sedation) may actually be more dangerous than general anesthesia in this procedure and are inappropriate for surgery in the throat. While anxiety during the administration of anesthesia is common it is infrequently remembered by patients as anesthesia has an amnestic effect for the events surrounding surgery.
The most common risk of tonsillectomy is bleeding after surgery. It usually takes approximately two weeks for the throat to heal completely, and bleeding can be seen at any time before then. However, when bleeding does happen, it is most common between five to ten days after the operation when the scab over the healing area of the throat, where the tonsils were removed, separates. Bleeding that is enough to be noticed happens in about 2-4% of patients, and will be seen as blood in the mouth or vomiting of bright red blood. Significant bleeding after adenoidectomy alone is extremely rare.
Bleeding after tonsillectomy that requires intervention is rare. Any significant bleeding after tonsillectomy or adenoidectomy should be evaluated in a controlled setting such as an emergency room. If significant bleeding does occur in the post-operative period please contact your doctor and proceed to the emergency room as directed by your physician or to the nearest ER in a significant emergency. This type of bleeding occurs in less than 1% of patients but is slightly more common in adolescents and adults.
You may see a change in the quality of your child’s voice after surgery. Usually this results in a high pitched quality to the voice which is at its worst at three weeks and usually resolves by 12-14 weeks after surgery. This occurs because the muscles in the back of the throat become weakened from being stretched by large tonsils and take time to strengthen up after surgery. In very rare causes speech therapy may be required to improve the vocal quality after surgery.
Occasionally, a child will have pain after surgery that is so severe that he or she will not be able to drink enough liquid and will become dehydrated. If this happens, the child may need to be readmitted to the hospital overnight for stronger pain medication and intravenous fluids. Other risks such as excessive bleeding during surgery, scarring of the throat and severe infection are extremely rare.