We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......

Prospective Tympanometry in 3-Year-Old Children A Study of the Spontaneous Course of Tympanometry Types in a Nonselected Population

Mogens Fiellau-Nikolajsen, MD; Joergen Lous, MD
Arch Otolaryngol. 1979;105(8):461-466. doi:10.1001/archotol.1979.00790200023005.
Text Size: A A A
Published online


• For six months we observed all 3-year-old children showing type B or C tympanograms at a prevalence study in a geographically limited area (372 ears or 37.2% of the screened total) to study the spontaneous course of middle ear effusions. A considerable test-retest stability was found only for type B. In type C, such stability was equally rare whether the middle ear pressure was highly or only slightly negative. Conversion to type A was observed in about 70% of cases. Ears having a middle ear pressure from −100 to −199 mm H2O almost always returned to normal. The tendency for a negative middle ear pressure or middle ear effusion to develop was the same for both sexes. Conversely, the prognosis of an effusion, once formed, differed significantly, with only girls showing a brief course. Accordingly, a sex-differentiated evaluation appears to be needed in preschool tympanometric screening, and should be included in all clinical considerations when middle ear effusion is demonstrated in young children.

(Arch Otolaryngol 105:461-466, 1979)


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?





Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.