Trial reportEar and hearing
Comparison of ear-canal reflectance and umbo velocity in patients with conductive hearing loss: a preliminary study.
Trial report in Ear and hearing. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
45 citing papers in PubMed, 101 citations in OpenAlex.
- Power reflectance as a screening tool for the diagnosis of superior semicircular canal dehiscence.Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2015Trial
- Trial
- Differentiating Causes of Post-Surgical Conductive Hearing Loss with Optical Coherence Tomography Vibrometry.Journal of the Association for Research in Otolaryngology : JARO · 2026Article
- The bone conduction threshold pattern may help to estimate the pathology underlying conductive hearing loss.Scientific reports · 2025Article
- Numerical analysis of the effect of middle-ear effusion on the sound transmission and energy absorbance of the human ear.Journal of otology · 2025Article
- Reflection function, reflectance, and area function measurements in ears of children and adults.The Journal of the Acoustical Society of America · 2024Article
- Article
- Three-dimensional wideband absorbance immittance findings in young adults with large vestibular aqueduct syndrome.Laryngoscope investigative otolaryngology · 2023Article
- The Rise and Fall of Aural Acoustic Immittance Assessment Tools.Seminars in hearing · 2023Review
- Implementation of Wideband Acoustic Immittance in Clinical Practice: Relationships among Audiologic and Otologic Findings.Seminars in hearing · 2023Article
- [Characteristics and differential diagnosis of middle ear cholesteatoma and chronic suppurative otitis media with wideband acoustic immittance].Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2022Article
- Mechanics of Total Drum Replacement Tympanoplasty Studied With Wideband Acoustic Immittance.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2022Article
- Combined analysis of finite element model and audiometry provides insights into the pathogenesis of conductive hearing loss.Frontiers in bioengineering and biotechnology · 2022Article
- Wideband absorbance tympanometry: a novel method in identifying otosclerosis.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2021Article
- The influence of otitis media with effusion on middle-ear impedance estimated from wideband acoustic immittance measurements.The Journal of the Acoustical Society of America · 2021Article
- Transcriptomic and physiological analysis of OsCAO1 knockout lines using the CRISPR/Cas9 system in rice.Plant cell reports · 2021Article
- [Numerical study on the effect of middle ear malformations on energy absorbance].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2021Article
- Wideband Absorbance Outcomes of Cochlear Implantation: A Comparative Clinical Study.The journal of international advanced otology · 2021Article
- Measurement of Wideband Absorbance as a Test for Otosclerosis.Journal of clinical medicine · 2020Article
- Tympanic Resonance Hypothesis.Frontiers in neurology · 2020Article
Corrections and comments
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
Abstract
objectiveThe goal of the present study was to investigate the clinical utility of measurements of ear-canal reflectance (ECR) in a population of patients with conductive hearing loss in the presence of an intact, healthy tympanic membrane and an aerated middle ear. We also sought to compare the diagnostic accuracy of umbo velocity (VU) measurements and measurements of ECR in the same group of patients.
designThis prospective study comprised 31 adult patients with conductive hearing loss, of which 14 had surgically confirmed stapes fixation due to otosclerosis, 6 had surgically confirmed ossicular discontinuity, and 11 had computed tomography and vestibular evoked myogenic potential confirmed superior semicircular canal dehiscence (SCD). Measurements on all 31 ears included pure-tone audiometry for 0.25 to 8 kHz, ECR for 0.2 to 6 kHz using the Mimosa Acoustics HearID system, and VU for 0.3 to 6 kHz using the HLV-1000 laser Doppler vibrometer (Polytec Inc, Waldbronn, Germany). We analyzed power reflectance |ECR| as well as the absorbance level = 10 × log10(1 - |ECR|). All measurements were made before any surgical intervention. The VU and ECR data were plotted against normative data obtained in a companion study of 58 strictly defined normal ears ().
resultsSmall increases in |ECR| at low-to-mid frequencies (400-1000 Hz) were observed in cases with stapes fixation, while narrowband decreases were seen for both SCD and ossicular discontinuity. The SCD and ossicular discontinuity differed in that the SCD had smaller decreases at mid-frequency (∼1000 Hz), whereas ossicular discontinuity had larger decreases at lower frequencies (500-800 Hz). SCD tended to have less air-bone gap at high frequencies (1-4 kHz) compared with stapes fixation and ossicular discontinuity. The |ECR| measurements, in conjunction with audiometry, could successfully separate 28 of the 31 cases into the three pathologies. By comparison, VU measurements, in conjunction with audiometry, could successfully separate various pathologies in 29 of 31 cases.
conclusionsThe combination of |ECR| with audiometry showed clinical utility in the differential diagnosis of conductive hearing loss in the presence of an intact tympanic membrane and an aerated middle ear and seems to be of similar sensitivity and specificity to measurements of VU plus audiometry. Additional research is needed to expand upon these promising preliminary results.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.