Browsing by Author "Erdem, M.Z."

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Comparison of the Efficacy of Auditory Steady-State Response (Assr) and Otoacoustic Emission (Oae) in Neonatal Hearing Screening
(Yuzuncu Yil Universitesi Tip Fakultesi, 2024) Erdem, M.Z.; Garça, M.F.
To investigate the correlation among auditory steady-state response (ASSR) and transient evoked otoacoustic emission (TEOAE) and screening brainstem auditory evoked response (s-BAER) tests in children with sensorineural hearing loss (SNHL). TEOAE, multiple-ASSR, and click s-BAER recordings and analyses of 30 healthy newborns and 74 newborns with high-risk of SNHL were performed prospectively. The three techniques were compared between healthy and high-risk SNHL newborns. In addition, average test durations were calculated in minutes. Hyperbilirubinemia requiring transfusion was the most common ris k factor in the high-risk SNHL group. In the ASSR test, the rate of failure was higher at low frequencies and was dramatically lower at high frequencies. In both ASSR and TEOAE, the sensitivity and accuracy rates increased at high frequencies. Average test duration (including preparations) was 30.2±6.45 min for multiple-ASSR, 1.26±0.81 min for TEOAE, and 1.86±0.87 min for s-BAER. Multiple-ASSR was found to be more sensitive in predicting behavioral hearing status compared to TEOAE. Based on our findings, we consider that multiple-ASSR is an objective test that can be used safely in predicting rapid frequency-specific behavioral hearing of bilateral ears simultaneously without requiring practitioner’s interpretation, particularly in high-risk neonates. However, further evidence and studies are needed to ensure that the newborn’s hearing prediction alone is sufficient. © 2024, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.
A Computed Tomography Study of the Sella Turcica in Chiari Malformation Type 2
(Lippincott Williams and Wilkins, 2025) Yalinkiliç, A.; Beger, B.; Erdem, M.Z.; Sönmez, B.; Karaaslanli, A.; Çetin, C.Ş.; Beger, O.
Objective: To reveal differences in morphology of the sella turcica (ST) in patients with Chiari malformation type 2 (CMT2) by comparison normal subjects. Methods: Computed tomography slices of 46 CMT2 (sex: 22 females and 24 males, and mean age: 8.80±5.87 y) and 46 controls (sex: 22 females and 24 males, and mean age: 8.48±5.13 y). Results: Patients with CMT2 had statistically similar ST size (its surface area, height, width, length, and diameter) to controls. Four configurations regarding Axelsson shape types were detected in CMT2s (normal sella: 71.70%, oblique anterior wall: 15.30%, irregularity: 6.50%, and pyramidal shape of the dorsum sellae: 6.50%) and controls (normal sella: 76.10%, oblique anterior wall: 10.90%, irregularity: 6.50%, and pyramidal shape of the dorsum sellae: 6.50%). Three configurations regarding Camp shape types were detected in CMT2s (oval: 28.30%, round: 67.40%, and flattened: 4.30%) and controls (oval: 26.10%, round: 71.70%, and flattened: 2.20%). CMT2 did not correlate with Axelsson (P=0.942) or Camp (P=0.804) shape types. Conclusion: The authors' computed tomography study displays that ST size and shape in CMT2s were similar to that of healthy subjects. © 2025 by Mutaz B. Habal, MD.