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Tympanocentesis is the removal of fluid from behind the eardrum.
The doctor uses a special needle with a tube attached to collect the sample of
culture and sensitivity test is usually done on the
sample of fluid.
Before the test, your child may get medicine to help him or her
relax. Or a doctor or nurse may apply medicine directly to the eardrum to
numb the area. If there is a lot of earwax, it is removed from the ear before
the test begins.
The child is held very still while the fluid is removed. You may be
asked to help with holding your child still.
In most cases, the eardrum heals within 3 to 5 days after the
This procedure is not often done. It is sometimes done:
In most cases, doing a
culture and sensitivity test on fluid collected by
tympanocentesis can identify the bacteria causing the infection. This helps the
doctor prescribe an antibiotic that is more likely to work. Sometimes no
bacteria are found in the fluid.
The child has to stay very still during the procedure.
Tympanocentesis does not prevent repeated ear infections (recurrent
Complete the medical test information form (PDF)medical test information form (PDF)(What is a PDF document?) to help you prepare for this test.
September 10, 2012
Susan C. Kim, MD - Pediatrics & Charles M. Myer, III, MD - Otolaryngology
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