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    Factors that affect in situ lifetime of Provox voice prosthesis
    (Istanbul University, 2004) Demir, Deniz; Süoğlu, Yusufhan; Emin, Haluk; Güven, Mehmet; Kıyak, Erkan; Demir, Deniz
    Objectives: We evaluated the effect of age, radiotherapy, insertion time of prosthesis, the period between radiotherapy and insertion time on in situ lifetime of Provox, voice quality and complications. Patients and methods: The study included the use of 62 Provox voice prosthesis in 50 total laryngectomy patients (46 males, 4 females; mean age 61 years; range 43 to 77 years). The patients visited our clinic regularly every three months for the first year after insertion and every six months in subsequent years. The ease of use and complications of prothesis and voice quality of the patients were evaluated. Results: The mean in situ lifetime was 24 months (range 1 to 49 months). Age, radiotherapy, insertion time of the prosthesis, the period between radiotherapy and the insertion time had no influence on the in situ lifetime of Provox. These variables were not associated with the complications of the prosthesis. A statistically significant good voice quality was found in nonirradiated patients and those in whom the prosthesis was inserted between 6 and 24 months after laryngectomy. The use of Provox was easier in nonirradiated patients than irradiated patients (p<0.001). Conclusion: In situ lifetime of Provox was not influenced by age, radiotherapy, insertion time, and the period between radiotherapy and insertion time of prosthesis. We believe that the patient factor is the most important factor that affect the in situ lifetime of Provox.
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    Tek taraflı vokal kord paralizili ve kordektomili olgularda intrakordal veya neokordal otolog yağ enjeksiyonunun uzun dönem sonuçları
    (Istanbul University, 2005) Güven, Mehmet; Demir, Deniz; Süoğlu, Yusufhan; Emin, Haluk; Kıyak, Erkan; Enöz, Murat; Demir, Deniz
    Objectives: We investigated the long-term results of autol­ ogous fat injections for unilateral vocal cord paralysis and laryngofissure and cordectomy defects.Patients and Methods: We evaluated the efficacy of autol­ ogous fat injections in 21 patients 16 males, 5 females; mean age 57 years; range 24 to 72 years with unilateral vocal cord paralysis n=11 and cordectomy defects n=10 in the light of computed acoustic analysis, phonatory func- tions, and videolaryngostroboscopic findings and the effect of injections on swallowing. The mean follow-up was 14 months range 10 to 22 months .Results: Voice quality improved in 14 patients. Glottic insuf- ficiency recurred in three patients in the early period, and in two patients in the late period. Phonatory functions showed significant improvement in ali parameters except for jitter and functional interference p<0.05 . Videolaryngostroboscopy showed significant improvement in glottic closure, but mucosal waves remained unchanged. Of 18 patients with swallowing disorders, aspiration symptoms improved in 15 patients. Patients with unilateral vocal cord paralysis had bet- ter results compared to those with cordectomy defects. Conclusion: Autologous fat injections may be consid- ered effective in patients with cordectomy defects or uni­ lateral vocal cord paralysis.
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    Transoral microlaryngoscopic approach for schwannoma of the larynx
    (Istanbul University, 2005) Güven, Mehmet; Süoğlu, Yusufhan; Demir, Deniz; Emin, Haluk; Sunay, Tayfun; Demir, Deniz
    Neurogenous tumors of the larynx are extremely rare.We present a 66-year-old male patient who under- went surgical excision of schwannoma of the larynx, which originated from the left aryepiglottic fold.Excision of the mass was performed through an endolaryngeal approach suspension microlaryn- goscopy . İn the early postoperative period, the patient was breathing comfortably and his swallowing and phonation were normal. During a follow-up of three years, no evidence for recurrence was detected and he had no complaints of dysphagia, globus sensation, dyspnea on exertion, or cough.