12
Management
Figure 4. AOM and Tympanostomy Tubes
AOM without a tympanostomy tube (le) and with a tube (right). Without a tube, the tympanic
membrane is bulging and inflamed, which causes pain and sometimes rupture.
Reproduced with permission: Rosenfeld RM. A parent's guide to ear tubes. PMPH-USA; 2005.
e height of the tracing may vary but is normal when the peak falls within the 2 stacked rectangles. e
A
D
tracing (upper) indicates an abnormally flexible tympanic membrane, and the A
S
tracing (lower)
indicates stiffness; the presence of a well-defined peak, however, makes the presence of effusion low.
Reproduced with Permission: Onusko E. Tympanometry. Am Fam Physician. 2004;70(9):1713-1720.
Figure 5. Normal Type A Tympanogram Result
