Browsing by Author "Koc, Bulent"

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Comparison of Acoustic and Stroboscopic Findings and Voice Handicap Index between Allergic Rhinitis Patients and Controls
(2014) Koc, Eltaf Ozbal; Koc, Bulent; Erbek, Selim; 25667789
Background: In our experience Allergic Rhinitis (AR) patients suffer from voice problems more than health subjects. Aims: To investigate the acoustic analysis of voice, stroscopic findings of larynx and Voice Handicap Index scores in allergic rhinitis patients compared with healthy controls. Study Design: Case-control study. Methods: Thirty adult patients diagnosed with perennial allergic rhinitis were compared with 30 age-and sex-matched healthy controls without allergy. All assessments were performed in the speech physiology laboratory and the testing sequence was as follows: 1. Voice Handicap Index (VHI) questionnaire, 2. Laryngovideostroboscopy, 3. Acoustic analyses. Results: No difference was observed between the allergic rhinitis and control groups regarding mean Maximum Phonation Time (MPT) values, Fo values, and stroboscopic assessment (p>0.05). On the other hand, mean VHI score (p=0.001) and s/z ratio (p=0.011) were significantly higher in the allergic rhinitis group than in controls. Conclusion: Our findings suggest that the presence of allergies could have effects on laryngeal dysfunction and voice-related quality of life.
Comparison of Clinical Outcomes Using A Piezosurgery Device vs. A Conventional Osteotome for Lateral Osteotomy in Rhinoplasty
(2017) Koc, Bulent; Koc, Eltaf Ayca Ozbal; Erbek, Selim; https://orcid.org/0000-0003-4825-3499; 28846787; HSB-4814-2023; B-7604-2019
Our aim for this study was to evaluate and compare the clinical outcomes in patients who underwent lateral osteotomy with a Piezosurgery device or a conventional osteotome in open-technique rhinoplasty. This cohort trial involved 65 patients (36 women and 29 men; average age: 23.6 +/- 5.71 yr) who,underwent surgery between May 2015 and January 2016. Piezosurgery was used for lateral osteotomy in 32 patients, whereas 33 patients underwent conventional external osteotomy. These 2 groups were compared for duration of surgery, perioperative bleeding, postoperative edema, ecchymosis, pain, and patient satisfaction on the first and seventh postoperative days. The Piezosurgery group revealed significantly more favorable outcomes in terms of edema, ecchymosis, and hemorrhage on the first day postoperatively (p < 0.001 for all). Similarly, edema (p = 0.005) and ecchymosis (p < 0.001) on the seventh postoperative day also were better in the Piezosurgery group. Hemorrhage was similar in both groups on the seventh postoperative day (p = 0.67). The Piezosurgery group not only experienced less pain on the first postoperative day (p < 0.001), but these patients also were more satisfied with their results on both the first and seventh postoperative days. Results of the present study imply that Piezosurgery may be a promising, safe, and effective method for lateral osteotomy, a critical step in rhinoplasty. The time interval necessary for the learning curve is counteracted by the comfort and satisfaction of both patients and surgeons.
Effects of Septoplasty on Speech and Voice
(2014) Koc, Eltaf Ayca Ozbal; Koc, Bulent; Ercan, Ibrahim; Kocak, Ismail; Tadihan, Elcin; Turgut, Suat; 24321591
Objectives. The aim of this study was subjective and objective evaluation of changes in acoustic features of voice before and after septoplasty surgery. Study Design. Prospective. Methods. Twenty patients scheduled for septoplasty procedure were included in the study. Before and 1 and 3 months after septoplasty surgery, acoustic analysis were performed. The recordings of /a/ vowel were used to evaluate average fundamental frequency (F-0), Jitter percent, and Shimmer percent. In spectrographic analyses, F3-F4 values for the vowels /i, e, a, o, and u/, nasal formant frequencies of the consonants /m/ and /n/ in the word /mana/, and four formant frequencies (F1, F2, F3, and F4) for nasalized /a/ vowel following a nasal consonant /n/ in the word /mana/ were compared. For the perceptual evaluation, the patients were asked to read the Turkish "Dere'' passage. The differences in nasal resonance and subjective evaluations were rated. Results. A statistically significant change was not observed in F-0 (P = 0.307), Jitter (P = 0.919), and Shimmer (P = 0.024) values measured before and after the operation for vowel /a/. Nasal formants measured before and after the operation for nasal formant /m/ and nasal formant /n/ in the word /mana/, which contains nasal consonants, and nasalized vowel /a/, which comes after a nasal consonant, did not differ statistically significant (P = 0.096 and P 0.034, respectively). Comparisons among F1, F2, F3, and F4 values did not reveal a statistically significant change for nasalized vowel /a/, which comes after a nasal consonant in the word /mana/. Conclusions. Our study shows that a complete therapeutic approach to patients affected by nasal septum deviation do not reveal significant voice abnormalities.
Skin Problems Following Septorhinoplasty
(2015) Koc, Eltaf A. O.; Buyuklu, Fuat; Koc, Bulent; Demirci, Gulsen T.; 0000-0003-1528-0036; 0000-0002-9646-0719; 25476595; W-5941-2018; D-6031-2017; HSB-4814-2023
Objectives/HypothesisSeptorhinoplasty is one of the most commonly performed plastic surgery procedures in the world. Studies on septorhinoplasty in the literature mainly focus on the surgical procedures and their outcomes, but the general appearance of the nose and nasal skin following surgery is also very important. Study DesignCase-control study examining 30 septorhinoplasty patients and 20 septoplasty patients for postoperative skin conditions. ResultsThere were significant differences identified between the septorhinoplasty group and the septoplasty group with respect to their mean preoperative Global Acne Grading System, Seborrheic Dermatitis Area Severity Index, and visual analog scores (acne, seborrhea, and ecchymosis). ConclusionsThe aim of study was to identify and evaluate postoperative skin conditions among septorhinoplasty patients, as well as the progression and duration of treatment of these conditions. Level of Evidence3b Laryngoscope, 125:1291-1295, 2015