Comparison of fetal and adult tympanic membrane sizes: a cadaveric study

Beğer, Orhan; Vayısoğlu, Yusuf; Örs, Alev Bobuş; Özdemir, Deniz Ladin; Müdüroğlu, Fatma; Taghipour, Pourya; Dağtekin, Oykut; Talaş, Derya Ümit

doi:10.1007/s00276-020-02593-6

Cited by 4 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Leibovitz et al 3 stated that the TRH and TRW corresponded to the vertical (height) and horizontal (width) diameters of the tympanic membrane, respectively ( Table 5 ). 15 - 20 Beger et al 20 compared the tympanic membrane dimensions of 18 fetuses (24.27 ± 3.24 weeks) and 10 adults (75.70 ± 14.11 years), and found that the membrane diameters did not alter from the seventh month in utero, in accordance with this work (which showed that the parameters of the TR did not change from the seventh month). The literature data focused on the tympanic membrane diameters ( Table 5 ) displayed that the numerical values were different in the studies.…”

Section: Discussionmentioning

confidence: 58%

Growth Pattern of the Tympanic Ring in Human Fetuses

et al. 2021

Self Cite

View full text Add to dashboard Cite

Objectives: The study aimed to display the growth pattern of the tympanic ring in fetal cadavers of 20-30 weeks of gestation. METHODS: In the study, 32 temporal bones of 16 fetuses (8 males, 8 females) of 24.62 ± 3.44 weeks of gestation were dissected to measure the height (TRH), width (TRW), and perimeter (TRP) of the annulus, and the width (TNW) of the opening part of the annulus at the level of the tympanic notch. Results: The TRH, TRW, TRP, and TNW were measured as 8.25 ± 1.04 mm, 7.64 ± 1.08 mm, 24.93 ± 3.40 mm, and 4.01 ± 0.91 mm, respectively. The parameters were similar at the seventh and eighth months of gestation; therefore, there was no variation from the seventh month. Linear function was calculated as y = 1.328 + 0.281 x weeks ( P < .001) for the TRH, y = 1.284 + 0.258 x weeks ( P < .001) for the TRW, y = 3.367 + 0.876 x weeks ( P < .001) for the TRP, and y = −0.603 + 0.188 x weeks ( P < .001) for the TNW. Conclusion: The parameters (TRH, TRW, TRP, and TNW) did not alter from the seventh month in utero. The linear functions (which represent the growth pattern of the parameters) of the tympanic ring may be useful for ear professionals to guess the annulus diameters, and to diagnose growth retardation and probable congenital anomalies in utero during sonographic imaging.

show abstract

Section: Discussionmentioning

confidence: 58%

Growth Pattern of the Tympanic Ring in Human Fetuses

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…Measurements of fixed and/or preserved tissues are commonly used in morphological sciences (Waltenberger et al, 2021). For developmental and foetal anatomy, formaldehyde‐preserved research material is the main source for morphological analysis (Beger et al, 2021; Grzonkowska et al, 2021; Paruszewska‐Achtel et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Preservation fluids of heritage anatomical specimens — a challenge for modern science. Studies of the origin, composition and microbiological contamination of old museum collections

et al. 2023

View full text Add to dashboard Cite

Anatomical museums preserve specimens of great historical value and undiscovered scientific potential. However, frequently these collections lack documentation of the techniques of preparation and the composition of preservative substances (conservation principles). This poses a huge problem for the care and preservation of these materials, more so because understanding this issue requires knowledge of fundamentals from different scientific disciplines. The aim of the research was to obtain information about the composition of substances used to preserve historic specimens, as well as to conduct a microbiological assessment of the specimens to detect possible factors causing their deterioration. Furthermore, we wanted to fill an existing gap in the literature, as there is a lack of reports on analytical methods that could be successfully applied by anatomists involved in the daily care of museum collections in human anatomy departments. The starting point was the analysis of the sources and history of the collections, on which basis the choice of research methods was made. Methods based on simple chemical reactions and specialised methods (such as gas chromatography-tandem mass spectrometry, Fourier transform infrared spectroscopy, inductively coupled plasma optical emission spectroscopy) were used in the analyses of the composition of fluids. Microbiological analyses were based on culture and isolation methods, analysis of microscopy slides and matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry analysis. As a result of these analyses, some components of the preservative mixtures and their concentrations were determined. The presence of methanol, ethanol, formaldehyde and glycerol was detected, among other chemicals.The concentrations of these substances were different between the samples and their determination required the use of a variety of methods suitable for the individual components of the preservative mixture. In microbiological tests, both bacteria and fungi were isolated from swabs taken from anatomical specimens. The bacterial flora was less numerous than the fungal flora. Among the bacteria, environmental Gram-positive Bacillus cereus, Bacillus thuringiensis and a rare bacterium of the Cupriavidus genus were | 149 DOMAŃSKI et al.

show abstract