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Appearance of effusion material in the attic space correlated to an impaired Eustachian tube function.
Int J Pediatr Otorhinolaryngol. 1983 Nov; 6(2):127-34.IJ

Abstract

In adult Sprague-Dawley rats a dysfunction or a total blockade of the Eustachian tube was established by various experimental procedures. The appearance of effusion material in the attic was subsequently considered to be evidence of incomplete ventilation of the middle ear cavity. Though the salpingopharyngeus muscle (SPM) seemed to be the muscle which could open the Eustachian tube maximally, splitting of the soft palate and consequent interference with the tensor veli palatini muscle (TVPM) and the levator veli palatini muscle (LVPM)--but obviously not with the salpingopharyngeus muscle (SPM)--caused the effusion material to be produced in the middle ear cavity. Neither blockade by about 80% of the tympanal orifice nor severing of the tendon of the tensor tympani muscle (TTM) close to the malleus produced any signs of effusion material whatsoever. Our findings strongly suggest that the most important part of the Eustachian tube, as regards ventilation, is the nasopharyngeal portion, as a normally functioning TVPM and LVPM seems to be an absolute prerequisite to prevent effusion material from developing in the attic.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

6686594

Citation

Hellström, S, et al. "Appearance of Effusion Material in the Attic Space Correlated to an Impaired Eustachian Tube Function." International Journal of Pediatric Otorhinolaryngology, vol. 6, no. 2, 1983, pp. 127-34.
Hellström S, Salén B, Stenfors LE, et al. Appearance of effusion material in the attic space correlated to an impaired Eustachian tube function. Int J Pediatr Otorhinolaryngol. 1983;6(2):127-34.
Hellström, S., Salén, B., Stenfors, L. E., & Söderberg, O. (1983). Appearance of effusion material in the attic space correlated to an impaired Eustachian tube function. International Journal of Pediatric Otorhinolaryngology, 6(2), 127-34.
Hellström S, et al. Appearance of Effusion Material in the Attic Space Correlated to an Impaired Eustachian Tube Function. Int J Pediatr Otorhinolaryngol. 1983;6(2):127-34. PubMed PMID: 6686594.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Appearance of effusion material in the attic space correlated to an impaired Eustachian tube function. AU - Hellström,S, AU - Salén,B, AU - Stenfors,L E, AU - Söderberg,O, PY - 1983/11/1/pubmed PY - 1983/11/1/medline PY - 1983/11/1/entrez SP - 127 EP - 34 JF - International journal of pediatric otorhinolaryngology JO - Int J Pediatr Otorhinolaryngol VL - 6 IS - 2 N2 - In adult Sprague-Dawley rats a dysfunction or a total blockade of the Eustachian tube was established by various experimental procedures. The appearance of effusion material in the attic was subsequently considered to be evidence of incomplete ventilation of the middle ear cavity. Though the salpingopharyngeus muscle (SPM) seemed to be the muscle which could open the Eustachian tube maximally, splitting of the soft palate and consequent interference with the tensor veli palatini muscle (TVPM) and the levator veli palatini muscle (LVPM)--but obviously not with the salpingopharyngeus muscle (SPM)--caused the effusion material to be produced in the middle ear cavity. Neither blockade by about 80% of the tympanal orifice nor severing of the tendon of the tensor tympani muscle (TTM) close to the malleus produced any signs of effusion material whatsoever. Our findings strongly suggest that the most important part of the Eustachian tube, as regards ventilation, is the nasopharyngeal portion, as a normally functioning TVPM and LVPM seems to be an absolute prerequisite to prevent effusion material from developing in the attic. SN - 0165-5876 UR - https://www.unboundmedicine.com/medline/citation/6686594/Appearance_of_effusion_material_in_the_attic_space_correlated_to_an_impaired_Eustachian_tube_function_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0165-5876(83)80113-X DB - PRIME DP - Unbound Medicine ER -