Person: ERMERAK, NEZİH ONUR
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
ERMERAK
First Name
NEZİH ONUR
Name
3 results
Search Results
Now showing 1 - 3 of 3
Publication Open Access Risk of serious perioperative complications with removal of double bars following the Nuss procedure(OXFORD UNIV PRESS, 2016-10-20) ERMERAK, NEZİH ONUR; Bilgi, Zeynep; Ermerak, Nezih Onur; Cetinkaya, Cagatay; Lacin, Tunc; Yuksel, MustafaOBJECTIVES: The aim of this study is to present our experience with Nuss bar removal and evaluate potential risk factors. The Nuss procedure requires an operation to remove the bar 2-3 years after the initial correction. Although removal of the bar is generally believed to be safe, perioperative complications including major bleeding can occur. METHODS: All cases involving removal of the Nuss bar done since April 2007 were recorded in a prospective database. Data were collected on the amount of blood loss, the number of diagnostic interventions, operative management and postoperative course. RESULTS: Of a total of 246 ( 162 with single bars, 80 with double bars, 4 with triple bars) cases, 43 patients (17.5%) experienced perioperative complications. Five patients underwent secondary postoperative interventions; one patient required same-session emergency videoassisted thoracic surgery (VATS) due to major bleeding. Patients who had complications were significantly older than patients with no complications (20.5 +/- 6.5 years vs 17.2 +/- 5.9 years, P = 0.002). People having double bars removed were significantly more likely to have perioperative complications (12% vs 27%, P = 0.03) and complications requiring secondary interventions (n = 1 for a single bar, n = 5 for double bars, P = 0.01). CONCLUSIONS: Major complications after removal of the Nuss bar occur with some frequency. Although the double-bar removals in our cohort were associated with major complications, the reasons are poorly understood. Immediate management of the complications may require multidisciplinary care. Multicentric pooling of cases is needed for better risk stratification.Publication Open Access Do Nuss bars compromise the blood flow of the internal mammary arteries?(OXFORD UNIV PRESS, 2013-09) YILDIZELİ, BEDRETTİN; Yuksel, Mustafa; Ozalper, Mehmet Hakan; Bostanci, Korkut; Ermerak, Nezih Onur; Cimsit, Cagatay; Tasali, Nuri; Yildizeli, Bedrettin; Batirel, Hasan FevziOBJECTIVES: Minimally invasive repair of pectus excavatum, the so-called Nuss procedure, has become a popular technique in recent years. The internal mammary arteries (IMAs) lie on the posterolateral surface of the sternum, and the Nuss bar is likely to obstruct the blood flow in these arteries. This obstruction could become important in the later stages of the lives of these young people if they were to require coronary artery bypass grafting. The goal of this study is to investigate the extent of obstruction of the IMAs caused by Nuss bars. METHODS: Data were collected prospectively on all patients who underwent the Nuss procedure between October 2011 and May 2012. Patients with a history of pectus excavatum repair by open surgery and those who were younger than 16 years of age were excluded. Computed tomography-angiography (CTA) was performed for the detection of IMA blood flow preoperatively and on the 10th postoperative day. Blood flow in the IMAs was evaluated blindly by two radiologists and classified as blood flow unaffected (group I) or affected (group II) by comparing the assessment of preoperative and postoperative CTAs. The patients in group II were also categorized as having blood flow obstructed bilaterally, blood flow obstructed unilaterally and others (diminished unilaterally/diminished on one side or obstructed on the other side). RESULTS: Thirty-four patients (31 male and three female; mean age 20.7 +/- 4.2 years) underwent surgery. Blood flow was affected in 15 patients (44%), with bilateral obstruction in five, unilateral obstruction in seven, and unilateral diminished flow in two patients. In one patient, blood flow was diminished on one side and obstructed on the other. There was no significant difference between unaffected group I patients and affected group II patients in terms of sex, age, type of deformity, Haller index and the number of bars placed. CONCLUSIONS: Nuss bars cause pressure on the IMAs, but a risk factor for this effect could not be identified. This is a relatively common clinical consequence of minimally invasive repair of pectus excavatum, and the long-term effects will be apparent following bar removal.Publication Open Access Evaluation of the internal thoracic artery blood flow before and after Nuss operation: is it reversible?(MARMARA UNIV, FAC MEDICINE, 2017-01-15) BEKİROĞLU, GÜLNAZ NURAL; Kuru-Bektasoglu, Pinar; Ermerak, Nezih Onur; Cimsit, Canan; Cetinkaya, Cagatay; Ozbakir, Hincal; Bekiroglu, Nural; Lacin, Tunc; Yuksel, MustafaObjective: Obstruction of the internal thoracic arteries (ITAs) by the Nuss bars in minimally invasive repair of pectus excavatum (MIRPE) has been documented in the literature. In this study, we aim to investigate the patency of ITAs before and after repair of the pectus excavatum with the Nuss procedure, by using color Doppler ultrasonography (US). Materials and Methods: Nineteen patients who underwent Nuss procedure were included in this study prospectively. Color Doppler US examinations were performed for comparing ITA patency after insertion of the Nuss bars and after their removal. Patients were evaluated according to gender, age, symmetry of deformity, Haller index, and the number of Nuss bars inserted. Results: Nineteen patients operated with MIRPE (17 male and 2 females with a mean age 21.78 +/- 6.35) were enrolled in the study. Eight patients (42.1%) with normal ITA blood flow preoperatively had normal blood flow after removal of the bar. In preoperative examination, 6 patients had bilateral (n=2) or unilateral (n=4) obstruction of the ITA and 5 patients had bilateral (n=2) or unilateral (n=3) abnormally disturbed flow. After the bar removal only 2 (10%) of the affected patients (57.9 %) still had obstruction whereas patent blood flow of the ITAs has been noted in 9 patients. Conclusion: We have shown that after the Nuss bar removal, only 10% of the ITAs are compromised.