The patulous Eustachian tube syndrome: the current state-of-the-art and an original clinical observation. Second communication

Savenko, I V; Boboshko, M. Yu.

doi:10.17116/otorino201883377

Cited by 2 publications

(1 citation statement)

References 35 publications

(51 reference statements)

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“…In general, the ET plays an important role in equalization, oxygenation, and drainage of the tympanic cavity in the middle ear; its structure provides a controlled air exchange in the tympanic cavity or provides an outlet for mucus and other fluid from the middle ear to the nasopharynx. 23 The ET is composed of bone, cartilage, and connective tissue. Based on data from 10 cadavers, Brown et al 24 reported the mean distance from the nasopharynx to the ET genu was 23 mm (SD 5 mm), the mean distance from the ET genu to the anterior aspect of the tympanic membrane was 24 mm (SD 3 mm), and the mean total ET length was 47 mm (SD 4 mm).…”

Section: Discussionmentioning

confidence: 99%

Morphological Observations of the Bony Canal Structure of the Eustachian Tube in Elderly Human Cadavers With Cone-Beam Computed Tomography and Principal Component Analysis

et al. 2021

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Objective: Anatomical information regarding the eustachian tube (ET) is limited; therefore, more detailed analytical data on ET structure is needed when planning surgical treatments involving the temporal bone. Methods: We examined the bony structure of the middle ear and ET in 30 Japanese donor cadavers (71-97 years old at the time of death) both macroscopically and with cone-beam computed tomography. Each ET was reconstructed in 3 dimensions, and the structure and correlations of ET element measurements, identified via principal component analysis, were analyzed. Results: Delineation between bony and cartilaginous zones appeared unclear, and the space between ET cartilage and the carotid canal was narrow. We observed stenosis of the ET bony canal in 43.3% of the specimens ( n = 30). In 50% of the specimens, the position of the ET bony canal was depressed at the pharyngeal orifice of the auditory side of the tube, and the middle region was a roundish structure. The lateral and central regions of the bony canal were related to the ET bony canal structure. Conclusion: The close proximity of the ET bony canal to the carotid canal is an important anatomical and morphological finding. Pre-surgical 3D modeling of the middle ear structure, or at a minimum, of the central region of the middle ear canal, may provide useful information for planning procedures that involve the ET.

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Section: Discussionmentioning

confidence: 99%

Morphological Observations of the Bony Canal Structure of the Eustachian Tube in Elderly Human Cadavers With Cone-Beam Computed Tomography and Principal Component Analysis

et al. 2021

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Assessment of sensitivity of acoustic reflex decay test in diagnosis of patulous eustachian tube

Attia,

Abou-Setta,

Ashary

2024

Egypt J Otolaryngol

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Background It has long been believed that the patulous eustachian tube is a unique but uncommon condition, with an estimated incidence ranging from 0.3 to 6.6% in the general population. Hearing one’s own voice and breathing, or autophony and aerophony, are the most common symptoms of PET, along with frequent auditory fullness. Aim This study is to establish a standardized protocol for the audiological evaluation of patulous Eustachian tube using acoustic reflex decay test during different breathing tasks. Methods Between January 2022 and December 2022, the ENT department at Suez Canal University Hospitals undertook an observational case-control study. Fifty-two adult patients who present to the Suez Canal University ENT department with complaints of autophony, auditory fullness, or aerophony are diagnosed with patulous eustachian tube dysfunction through endoscopic examination of the tympanic membrane’s synchronized movement with respiration. Results The incidence rate of PET among adults was approximately 3 patients/1000 patients/year. The age of the whole studied group ranged from 20 to 60 years with mean ± SD of 37.4 ± 12.6 years. They included 23 males (44.2%) and 29 females (55.8%). The most common symptom among the studied group was aural fullness (46%), while the least common symptom was aerophony (12%); the most common risk factor among the studied patients was allergy (46.2%), while the least common was radiotherapy (3.9%); 66.7% of the patients with GERD were males, while 66.7% of the patients who lost weight were females; 58.3% of the patients with allergies were females, and also 60% of the patients with thin built were females. In the case group, there is a significant higher change of middle ear compliance in ipsilateral nostril breathing than the mouth breathing and nasal breathing. The sensitivity of the acoustic reflex decay test to diagnose PET with reference to the gold standard test is 88.5% (23/26*100), the specificity is 100% (26/26*100), and the positive predictive value is 100% (23/23*100). Conclusion The sensitivity of the acoustic reflex decay test to diagnose PET with reference to the gold standard test is high, and the specificity is very high with very good diagnostic accuracy.

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The patulous Eustachian tube syndrome: the current state-of-the-art and an original clinical observation. Second communication

Cited by 2 publications

References 35 publications

Morphological Observations of the Bony Canal Structure of the Eustachian Tube in Elderly Human Cadavers With Cone-Beam Computed Tomography and Principal Component Analysis

Morphological Observations of the Bony Canal Structure of the Eustachian Tube in Elderly Human Cadavers With Cone-Beam Computed Tomography and Principal Component Analysis

Assessment of sensitivity of acoustic reflex decay test in diagnosis of patulous eustachian tube

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