Yazar "Karakus, Mehmet Fatih" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim Yok
    Öğe
    Acoustic parameter changes after bariatric surgery
    (Taylor & Francis Ltd, 2022) Eravci, Fakih Cihat; Yildiz, Baris Dogu; Ozcan, Kursat Murat; Moran, Munevver; Colak, Mustafa; Karakurt, Suleyman Emre; Karakus, Mehmet Fatih
    Objective To investigate the acoustic parameter changes after weight loss in bariatric surgery patients. Materials and methods This prospective, longitudinal study was conducted with 15 patients with planned bariatric surgery, who were evaluated pre-operatively and at 6 months post-operatively. Fundamental frequency (F0), Formant frequency (F1, F2, F3, and F4), Frequency perturbation (Jitter), Amplitude perturbation (Shimmer) and Noise-to-Harmonics Ratio (NHR) parameters were evaluated for /a/, /e/, /i/, /o/, and /u/ vowels. Changes in the acoustic analysis parameters for each vowel were compared. The study group was separated into two groups according to whether the Mallampati score had not changed (Group 1) or had decreased (Group 2) and changes in the formant frequencies were compared between these groups. Results A total of 15 patients with a median age of 40 +/- 11 years completed the study. The median weight of the patients was 122 +/- 14 kg pre-operatively and 80 +/- 15 kg, post-operatively. BMI declined from 46 +/- 4 to 31 +/- 5 kg/m(2). The Mallampati score decreased by one point in six patients and remained stable in nine. Of the acoustic voice analysis parameters of vowels, in general, fundamental frequency tended to decrease, and shimmer and jitter values tended to increase. Some of the formant frequencies were specifically affected by the weight loss and this showed statistical significance between Group 1 and Group 2. Conclusion The present study reveals that some specific voice characteristics might be affected by successful weight loss after bariatric surgery.
  • Küçük Resim Yok
    Öğe
    Comparison of the Hearing Results of Ossicular Chain Reconstruction Using MCBO and TiTORP in Patients with Cholesteatoma
    (Zamensalamati Publ Co, 2021) Karakus, Mehmet Fatih; Ozcan, Kursat Murat; Karakurt, Suleyman Emre; Colak, Mustafa; Eravci, Fakih Cihat; Yagmur, Ali Riza; Cetin, Mehmet Ali
    Background: No studies have investigated the results of ossicular chain reconstruction using mastoid cortical bone ossiculoplasty (MCBO) and titanium total ossicular replacement prosthesis (TiTORP) in Austin-Kartush Group D cholesteatoma patients with severe middle ear risk index (MERI). Objectives: The present study aimed to compare the hearing results of MCBO and TiTORP in Austin-Kartush Group D cholesteatoma patients with severe MERI who underwent ossicular chain reconstruction during primary surgery. Methods: The hearing results of 28 adult cholesteatoma patients who underwent tympanomastoidectomy and ossicular chain reconstruction with MCBO (n=15) or TiTORP (n=13) were analyzed in the current study. The postoperative hearing was tested 12 months after the surgery. The hearing-related functional success rate was determined in accordance with the American Academy of Otolaryngology-Head and Neck Surgery Foundation criteria. Results: When all patients were taken into account, the mean preoperative and postoperative air-bone gaps (ABG) were reported as 32.2 decibel (dB) and 17.6 dB, respectively, (P<0.001). In 57.1% of the patients, the mean postoperative ABG was <= 20 dB. The mean preoperative and postoperative ABGs of the MCBO group were obtained at 29.9 and 16.2 dB, while these values were reported as 35.0 and 19.3 dB in the TiTORP group (P=0.001 and P<0.001, respectively). Hearing-related functional success rates were calculated at 60.0% and 53.8% in MCBO and TiTORP groups, respectively, without any significant difference between the groups (P= 0.743). Conclusion: As evidenced by the obtained results, MCBO and TiTORP can provide similar and successful hearing results in Austin-Kartush Group D patients with cholesteatoma; nonetheless, MCBO is a more cost-effective option in this regard.
  • Küçük Resim Yok
    Öğe
    Evaluation of retinal vessel density and foveal avascular zone measurements in patients with obstructive sleep apnea syndrome
    (Springer, 2021) Colak, Mustafa; Ozek, Dilay; Ozcan, Kursat Murat; Eravci, Fakih Cihat; Karakurt, Suleyman Emre; Karakus, Mehmet Fatih; Evren Kemer, Ozlem
    Purpose To compare retinal capillary plexus vessel densities, choroidal thickness, optic disc vessel densities and foveal avascular zone measurements between normal subjects and subjects with obstructive sleep apnea syndrome (OSAS) using spectral-domain OCT angiography (OCTA). Methods Forty eyes of patients with overall OSAS, 20 eyes of patients with mild-moderate OSAS, 20 eyes of patients with severe OSAS on polysomnography and 21 controls were evaluated with the RTVue-XR Avanti OCTA (Optovue, Inc., Fremont, CA). Superficial and deep retinal capillary plexus vessel densities, choroidal thickness and foveal avascular zone (FAZ) parameters (area, diameter, acircularity index of the FAZ, foveal density-300) were measured for all subjects. Results Superficial capillary plexus vessel densities of the groups were similar. Deep capillary plexus (DCP) vessel densities of all three OSAS groups decreased in the parafoveal region (< 0.001). In the perifoveal region, DCP vessel densities were decreased in the Overall OSAS group (p = 0.023) and in the Severe OSAS group (p = 0.021), whereas it was similar in the Mild-moderate OSAS group. Choroidal thickness decreased in all three OSAS groups (p < 0.001). All FAZ measurements and foveal density-300 measurements were similar compared to the control group. Conclusion Our findings indicate that in severe OSAS patients, deep parafoveal, perifoveal vascular densities decrease and the choroid layer becomes thinner. When evaluating a patient with OSAS, it should be kept in mind that there may be eye involvement due to the disease.