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.
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.