正常耳和慢性中耳炎患者咽鼓管长度、宽度和角度的高分辨率计算机断层扫描研究》（High Resolution Computed Tomography Study of Length, Width & Angle of Eustachian Tube in Normal Ear and in Chronic Otitis Media）。
Vithal D Udagatti, Rajendran Dinesh Kumar, Vishwanath Kumbar, Krithi P John
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A comparative prospective study design of 20 adults of both gender of normal ear computerized tomography done for some other cause and 20 adults of both gender with chronic otitis media (tubo-tympanic pathology). After obtaining consent, clinical examination, all patients had got computerized tomography study of the temporal bone and were evaluated to study the variation of length, width of bony canal, isthmus, length of the cartilaginous canal and angulation of the Eustachian tube to horizontal plane. In our series cartilaginous Eustachian tube length is 26.72 mm in normal ear and 26.17 mm in diseased ear. Long and reduced diameter of bony segment is the anatomical cause in the tubotympanic pathology along with inflammation and loss of ciliary moment. Normal ear bony width is 2.36 mm; isthmus 1.18 mm are comparatively more than diseased ear (bony width 2.13 & isthumus1.04). Whereas bony length of normal ear is 11.21 mm and diseased ear is 11.62 mm. Decreased Eustachian tube pretympanic diameter and Reid -plane ET angle can be used to predict Eustachian tube dysfunction. Angle to horizontal plane in our series in normal ear 44.670 whereas in diseased ear 45.10. The Eustachian tube plays an important role in the development of the tubotympanic pathology of the ear. Pre-existing Eustachian tube anatomical variation appears to be risk factor in developing tubotympanic pathology.</p>","PeriodicalId":49190,"journal":{"name":"Indian Journal of Otolaryngology and Head and Neck Surgery","volume":"76 6","pages":"5386-5392"},"PeriodicalIF":0.6000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569361/pdf/","citationCount":"0","resultStr":"{\"title\":\"High Resolution Computed Tomography Study of the Length, Width & Angle of Eustachian Tube in Normal Ear and in Chronic Otitis Media.\",\"authors\":\"Vithal D Udagatti, Rajendran Dinesh Kumar, Vishwanath Kumbar, Krithi P John\",\"doi\":\"10.1007/s12070-024-04984-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Eustachian tube is complex and inaccessible structure. It connects nasopharynx to middle ear. It is composed of cartilaginous and bony segments. Eustachian tube helps in pressure regulation, protection and clearance of the middle ear. Dysfunctions of Eustachian tube are either due to anatomical obstruction or functional failure. Whether variation of length, width of bony canal, isthmus, length of the cartilaginous canal and angulation of the Eustachian tube to horizontal plane affects overall pressure regulation, protection and mucociliary clearance leads to the spread of the infection to the middle ear are highlighted. A comparative prospective study design of 20 adults of both gender of normal ear computerized tomography done for some other cause and 20 adults of both gender with chronic otitis media (tubo-tympanic pathology). After obtaining consent, clinical examination, all patients had got computerized tomography study of the temporal bone and were evaluated to study the variation of length, width of bony canal, isthmus, length of the cartilaginous canal and angulation of the Eustachian tube to horizontal plane. 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High Resolution Computed Tomography Study of the Length, Width & Angle of Eustachian Tube in Normal Ear and in Chronic Otitis Media.
Eustachian tube is complex and inaccessible structure. It connects nasopharynx to middle ear. It is composed of cartilaginous and bony segments. Eustachian tube helps in pressure regulation, protection and clearance of the middle ear. Dysfunctions of Eustachian tube are either due to anatomical obstruction or functional failure. Whether variation of length, width of bony canal, isthmus, length of the cartilaginous canal and angulation of the Eustachian tube to horizontal plane affects overall pressure regulation, protection and mucociliary clearance leads to the spread of the infection to the middle ear are highlighted. A comparative prospective study design of 20 adults of both gender of normal ear computerized tomography done for some other cause and 20 adults of both gender with chronic otitis media (tubo-tympanic pathology). After obtaining consent, clinical examination, all patients had got computerized tomography study of the temporal bone and were evaluated to study the variation of length, width of bony canal, isthmus, length of the cartilaginous canal and angulation of the Eustachian tube to horizontal plane. In our series cartilaginous Eustachian tube length is 26.72 mm in normal ear and 26.17 mm in diseased ear. Long and reduced diameter of bony segment is the anatomical cause in the tubotympanic pathology along with inflammation and loss of ciliary moment. Normal ear bony width is 2.36 mm; isthmus 1.18 mm are comparatively more than diseased ear (bony width 2.13 & isthumus1.04). Whereas bony length of normal ear is 11.21 mm and diseased ear is 11.62 mm. Decreased Eustachian tube pretympanic diameter and Reid -plane ET angle can be used to predict Eustachian tube dysfunction. Angle to horizontal plane in our series in normal ear 44.670 whereas in diseased ear 45.10. The Eustachian tube plays an important role in the development of the tubotympanic pathology of the ear. Pre-existing Eustachian tube anatomical variation appears to be risk factor in developing tubotympanic pathology.
期刊介绍：
Indian Journal of Otolaryngology and Head & Neck Surgery was founded as Indian Journal of Otolaryngology in 1949 as a scientific Journal published by the Association of Otolaryngologists of India and was later rechristened as IJOHNS to incorporate the changes and progress.
IJOHNS, undoubtedly one of the oldest Journals in India, is the official publication of the Association of Otolaryngologists of India and is about to publish it is 67th Volume in 2015. The Journal published quarterly accepts articles in general Oto-Rhino-Laryngology and various subspecialities such as Otology, Rhinology, Laryngology and Phonosurgery, Neurotology, Head and Neck Surgery etc.
The Journal acts as a window to showcase and project the clinical and research work done by Otolaryngologists community in India and around the world. It is a continued source of useful clinical information with peer review by eminent Otolaryngologists of repute in their respective fields. The Journal accepts articles pertaining to clinical reports, Clinical studies, Research articles in basic and applied Otolaryngology, short Communications, Clinical records reporting unusual presentations or lesions and new surgical techniques. The journal acts as a catalyst and mirrors the Indian Otolaryngologist’s active interests and pursuits. The Journal also invites articles from senior and experienced authors on interesting topics in Otolaryngology and allied sciences from all over the world.
The print version is distributed free to about 4000 members of Association of Otolaryngologists of India and the e-Journal shortly going to make its appearance on the Springer Board can be accessed by all the members.
Association of Otolaryngologists of India and M/s Springer India group have come together to co-publish IJOHNS from January 2007 and this bondage is going to provide an impetus to the Journal in terms of international presence and global exposure.
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