Browsing by Author "Agirbas, Semra"

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The Effect of Nitrous Oxide on the Outcomes of Underlay Tympanoplasty: a Prospective Study
(Sage Publications inc, 2019) Duzenli, Ufuk; Bozan, Nazim; Turan, Mahfuz; Agirbas, Semra; Tekeli, Arzu Esen; Kiroglu, Ahmet Faruk
The main aims of tympanoplasty are eradication of chronic middle ear disease, repair of the tympanic membrane, and restoration of hearing. Nitrous oxide (N2O) is not a commonly preferred anesthetic agent for tympanoplasty because this agent may increase middle ear pressure and displace the graft. In this study, we researched the surgical outcomes of the underlay tympanoplasty performed with N2O anesthesia. Patients who underwent tympanoplasty were included in this prospective study. A type 1 tympanoplasty was performed in all patients using the underlay technique. Patients were randomized to groups that did and did not receive N2O. Preoperative and postoperative hearing thresholds were evaluated, postoperative pain scores were recorded, and the differences between the groups were statistically evaluated. There were 44 patients who received N2O and 44 who did not. The graft success rate was 93.2% in the N2O-receiving group and 84.1% in the nonreceiving group (P > .05). Hearing levels improved significantly after surgery in each group (P < .05), but the difference between the groups was not significant (P > .05). The postoperative pain score was 3.72 +/- 1.3 in the N2O-receiving group and 4.45 +/- 2.3 in the nonreceiving group (P > .05). Nitrous oxide is a cheap, safe, and readily available anesthetic agent that provides acceptable success rates in patients undergoing tympanoplasty.
Neck Muscle Stiffness Measured by Shear Wave Elastography in Patients With Cervicogenic Dizziness: A Case-Control Study
(College of Physicians & Surgeons Pakistan, 2025) Cetin, Yaser Said; Agirbas, Semra; Ozgokce, Mesut
Objective: To evaluate the neck muscle stiffness in patients with cervicogenic dizziness (CGD) using shear wave elastography (SWE). Study Design: A case-control study. Place and Duration of the Study: Department of Otorhinolaryngology, Van Yuzuncu Yil University, Van, Turkiye, from 2023 to 2025. Methodology: The study included 33 patients with CGD and 33 matched healthy controls. Cervical muscle stiffness was measured by SWE in the sternocleidomastoid (SCM), trapezius (TRAP), splenius capitis (SPLC), and semispinalis capitis/cervicis (SCC) muscles. Neck pain, dizziness, neck disability, and dizziness handicap levels were also determined. Student's t-test and Mann-Whitney U test were used to compare muscle stiffness between the groups. Results: CGD patients and the Control group were similar in terms of age, gender, and body mass index (BMI [kg/m(2)]; p >0.05). CGD patients had significantly higher stiffness values in SCM (p = 0.029) and TRAP (p = 0.025) muscles compared to the Control group. However, there was no significant difference in the stiffness scores of SPLC (p = 0.199) and SCC (p = 0.681) muscles between the groups. In CGD patients, a significant positive correlation between SPLC muscle stiffness and neck disability was observed. However, there was no significant correlation between cervical muscle stiffness and neck pain, dizziness, neck disability, or dizziness handicap. Conclusion: SWE findings showed that CGD patients had higher SCM and TRAP stiffness than healthy controls. These findings may be useful for understanding CGD and for improving diagnosis, differential diagnosis, and treatment. However, this is a preliminary study on the subject, and further studies are warranted.
Sphenoid Sinus Size and Shape in Chiari Malformation Type 2
(Lippincott Williams & Wilkins, 2026) Erdem, Mehmet Zeki; Yalinkilic, Abdulaziz; Beger, Burhan; Agirbas, Semra; Karaaslanli, Abdulmutalip; Kilic, Ridvan; Beger, Orhan
Objective:The aim of the study was to compare the morphologic features of the sphenoid sinus in patients with Chiari malformation type 2 (CMT2) with a control group.Methods:This retrospective study contained computed tomography images of 42 CMT2s and 45 controls. Of 42 CMT2 patients aged 12.55 +/- 5.81 years, 23 were females and 19 were males. Of 45 controls aged 12.16 +/- 4.89 years, 22 were females and 23 were males. The volume, surface area, width, thickness, and height of the sphenoid sinus were measured, and its shape (postsellar, sellar, presellar, and conchal) was noted.Results:Patients with CMT2 had smaller the sphenoid sinus's volume (P=0.035), surface area (P=0.032), width (P=0.022), thickness (P=0.039), and height (P=0.021) than controls. Four configurations regarding shape types of the sphenoid sinus were detected in CMT2 (postsellar: 31%, sellar: 23.80%, presellar: 26.20%, and conchal: 19%) and controls (postsellar: 35.60%, sellar: 31.10%, presellar: 28.90%, and conchal: 4.40%). CMT2 did not correlate with shape of the sphenoid sinus (P=0.200).Conclusions:CMT2 patients have a small sinus compared with controls. This work may be useful to understand anatomic properties of the sphenoid bone such patients.
Tongue Base Schwannoma Presenting with Dyspnea
(Lippincott Williams & Wilkins, 2025) Agirbas, Semra; Bozan, Nazim
Schwannoma is a benign nerve sheath tumor arising from Schwann cells. Its exact etiology remains known. Tongue base schwannoma is a remarkably rare form of schwannoma. Although it often presents with dysphagia and swelling, it may cause obstructive airway problems as its size increases. Since it affects all age groups, its differential diagnosis typically includes congenital, infectious masses, and benign/malignant neoplasia of vascular and mesenchymal origin. In this study, the authors report on a 43-year-old patient with tongue base schwannoma, and the authors also review the cases reported in the literature over the last 60 years in terms of mass size, primary presenting complaint, and surgical techniques preferred in the studies.