Researcher:
Gündoğdu, Gökhan

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Doctor

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Gökhan

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Gündoğdu

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Gündoğdu, Gökhan

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2015 - 20197

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Researcher Of Publications: search.filters.isAuthorOfPublication.6020d652-ac82-4432-8a3e-88cf64033f32

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Now showing 1 - 7 of 7
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    Congenital prepubic sinus
    (Bmj Publishing Group, 2016) N/A; N/A; N/A; Eroğlu, Egemen; Özen, Mehmet Ali; Gündoğdu, Gökhan; Faculty Member; Faculty Member; Faculty Member; School of Medicine; School of Medicine; School of Medicine; Koç University Hospital; 214688; 293404; N/A
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    Thoracoscopic-guided azygos vein catheterization and port implantation in a child with end-stage central venous access
    (Wichtig Publ, 2015) Umutoğlu, Tarık; Topuz, Ufuk; Bakan, Mefkur; Gündoğdu, Gökhan; Faculty Member; School of Medicine; N/A
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    Isolated penile torsion in newborns
    (Canadian Urological association, 2015) N/A; N/A; Eroğlu, Egemen; Gündoğdu, Gökhan; Faculty Member; Faculty Member; School of Medicine; School of Medicine; Koç University Hospital; 214688; N/A
    introduction: We reported on the incidence of isolated penile torsion among our healthy children and our approach to this anomaly. Methods: Between 2011 and 2014, newborn babies with penile torsion were classified according to the angle of torsion. Surgical correction (penile degloving and reattachment for moderate cases and dorsal dartos flap technique in case of resistance) after 6 months was advised to the babies with rotations more than 45 degrees. Results: among 1000 newborn babies, 200 isolated penile torsions were found, and among these, 43 had torsions more than 45 degrees, and 4 of these had angles greater than 90 degrees. the mean angle of the rotations was found 30.45 degrees (median: 20 degrees). in total, 8 children with 60 degrees torsions were previously circumcised. Surgery was performed on 19 patients, with a mean patient age of 12 +/- 2 months. of these 19, 13 babies were corrected with degloving and reattachment. This technique was not enough on the remaining 6 patients; therefore, derotational dorsal dartos flap was added to correct the torsion. after a mean of 15.6 +/- 9.8 months, residual penile rotation, less than 15 degrees, was found only in 2 children. Conclusion: the incidence of isolated penile torsion is 20% in newborns. However, rotation more than 45 degrees angles are seen in 4.3% of male babies. Correction is not necessary in mild degrees, and penile degloving with reattachment is enough in most cases. If the initial correction is insufficient, dorsal dartos flap rotation is easy and effective. Prior circumcision neither disturbs the operative procedure nor affects the outcomes.
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    Are mechanical and chemical trauma the reason of meatal stenosis after newborn circumcision?
    (Springer, 2019) N/A; N/A; Özen, Mehmet Ali; Gündoğdu, Gökhan; Taşdemir, Mehmet; Eroğlu, Egemen; Faculty Member; Researcher; Faculty Member; Faculty Member; School of Medicine; School of Medicine; School of Medicine; School of Medicine; Koç University Hospital; Koç University Hospital; Koç University Hospital; Koç University Hospital; 293404; N/A; 175867; 214688
    Mechanical and chemical trauma are a widely accepted theories to explain the pathogenesis of meatalstenosis after newborn circumcision. The aim of the present study was to explore the theory that an exposed glans is prone to meatal stenosis. This was done by a novel investigation of boys who were born with hooded prepuce, a condition in which the glans is completely exposed. Physical examination, lower urinary tract symptoms, urethral meatus configuration, and surgical procedures of 18 children admitted for routine circumcision, who had congenital hooded prepuce with normally located urethral meatus, were analyzed. The study period was 2013 and 2018. All the cases have been seen because of neonatal circumcision request, but was postponed due to hooded prepuce. The only presenting complaint in children was a cosmetically unattractive appearance. There were no symptoms associated with meatal stenosis, they circumcised in an average of 6 years and non of them required any additional procedure.Conclusion: Meatal stenosis did not occur in cases whose glans penis are naked with hooded prepuce. These findings do not support the default chemical and mechanical trauma theories. Hooded prepuce without any penile anomalies is only a cosmetically unattractive appearance and circumcision can correct this.
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    Treatment of large ovarian cysts in newborns and the effectiveness of laparoscopic approach
    (Logos Yayıncılık, 2015) N/A; N/A; Eroğlu, Egemen; Gündoğdu, Gökhan; Faculty Member; Faculty Member; School of Medicine; School of Medicine; Koç University Hospital; 214688; N/A
    Aim: Ovarian cysts are more frequently diagnosed antenatally due to the advances in imaging studies. They are mostly asymptomati during antenatal or postnatal period, but loss of the organ can occur in case of torsion or intracystic bleeding. The aim of this study was to investigate the effect of early laparoscopic surgical treatment of neonatal ovarian cysts on preservation of ovaries. Material and Methods: Medical records of patients with ovarian cysts larger than 5 cm in the last 4 years were retrospectively analyzed. Age, cyst diameter, sonographically detected anatomical structure of the cyst, treatment method, age at surgery, length of the hospital stay and outcomes of the follow-up were evaluated. Results: Between January 2010 and September 2014, 6 newborns were operated for large ovarian cysts. Gestational age of all cases at diagnosis ranged between 35 and 38 weeks with a mean gestational age of 36.8±1.3 weeks. Three of the cysts were simple, and the other 3 were reported as complicated ultrasonographically. For the simple cysts, laparoscopy assisted cystectomy was performed at the mean age of 6.2±1.4 days. The other three patients needed laparoscopy-assisted oophorectomy at the mean age of 10±2.1 days. The mean operative time was 23±5 minutes. The postoperative course was uneventful and the mean time of hospitalization was 23.7 (23.7±5.8) hours. Histopathological examinations of the specimens were reported as ovarian follicular cysts. Conclusion: In conclusion, antenatal ovarian cysts larger than 5 cm at diagnosis should be consulted with a pediatric surgeon, and with the aim to preserve the ovarian tissue; immediate intervention should be done after the delivery. Laparoscopy assisted surgery can be preferred due to the safe, short and easy intervention opportunities. © Cocuk Cerrahisi Dergisi. All rights reserved.
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    PublicationOpen Access
    Differential lung ventilation via tracheostomy using two endotracheal tubes in an infant: a case report
    (BioMed Central, 2017) Ataman, Yasemin; N/A; Demirkol, Demet; Gündoğdu, Gökhan; Faculty Member; School of Medicine
    Background: This case report presents differential lung ventilation in an infant. The aim is to define an alternative technique for performing differential lung ventilation in children. To the best of our knowledge, this is the first report of this kind. Case presentation: A 4.2-kg, 2.5-month-old Asian boy was referred to our facility with refractory hypoxemia and hypercarbia due to asymmetric lung disease with atelectasis of the left lung and hyperinflation of the right lung. He was unresponsive to conventional ventilator strategies; different ventilator settings were required. To perform differential lung ventilation, two separate single-lumen endotracheal tubes were inserted into the main bronchus of each lung by tracheotomy; the tracheal tubes were attached to discrete ventilators. The left lung was ventilated with a lung salvage strategy using high-frequency oscillatory ventilation, and the right lung was ventilated with a lung-protective strategy using pressure-regulated volume control mode. Differential lung ventilation was performed successfully with this technique without complications. Conclusions: Differential lung ventilation may be a lifesaving procedure in select patients who have asymmetric lung disease. Inserting two single-lumen endotracheal tubes via tracheotomy for differential lung ventilation can be an effective and safe alternative method.
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    PublicationOpen Access
    Does voiding cystourethrogram exclude posterior urethral valves in late presenting cases?
    (Thieme Medical Publishers, 2019) Büyükünal, Cenk; N/A; N/A; Özen, Mehmet Ali; Taşdemir, Mehmet; Gündoğdu, Gökhan; Bilge, İlmay; Eroğlu, Egemen; Faculty Member; Doctor; Faculty Member; Faculty Member; School of Medicine; N/A; 175867; N/A; 198907; N/A
    Introduction: delayed presentation of posterior urethral valves (PUVs) is a rare condition. Presentation and diagnosis of the patients with late PUVs are challenging. Voiding cystourethrogram (VCUG) is mainly practiced. In this study, we aimed to evaluate the children with late-presented PUVs, and the reliability of VCUG in this group. Materials and methods: between January 2003 and December 2017 records of patients who were diagnosed with late-presented PUVs were analyzed. Delayed presentation of PUV was defined as patients who were diagnosed and treated after infancy. Cases were examined in terms of age at diagnosis, presenting symptoms, urinalysis, urinary ultrasound, urodynamic studies, VCUG, and dimercaptosuccinic acid scintigraphy findings. Postoperative follow-up conditions were also assessed. Results: seventeen boys were diagnosed with late-presented PUVs (mean age was 7.35 years). The most common symptoms at presentation were frequency (58.8%), day and nighttime incontinence (47%), and febrile urinary infection (41%). PUV was noted by VCUG in 10 patients alone. The classical sign of dilated posterior urethra was detected in 9 patients. The 10th patient had posterior urethral irregularity. Urethra could not be evaluated due to unsuccessful voiding in one patient. Six patients had normally appearing urethra on VCUG. Reflux was detected in nine (52.9%) patients. Conclusion: late-presented PUVs may be missed on VCUG. Whether a PUV might be present is crucial in boys with a history of recurrent urinary infection, persistent reflux, and repetitive daytime incontinence. Based on our results, we conclude that cystoscopic examination should be preferred for those cases to diagnose PUVs regardless of VCUG results.