Our Doctors

Pediatric Surgery

Prof. Dr. Ahmet Güven

Neonatal Surgery

- Congenital anomalies of the newborn
- Esophageal atresia
- Congenital Diaphragmatic hernia (Bochdalek, Morgagni)
- Lung anomalies and masses
- Genitourinary anomalies
- Anorectal malformation (Anal atresia)
- Liver and biliary tract anomalies (Biliary atresia, etc.)
- Intestinal atresia (Duodenal, Jejunoileal atresia)
- Hirschsprung's disease
- Anterior abdominal wall defects: Omphalocele-Gastroschisis
- Congenital tumors –Sacrococcygeal teratoma
- Congenital head and neck masses


Pediatric Head and Neck Surgery

- Lymphangioma, hemangioma
- Lymph node enlargements (Lymphoma, infection)
- Thyroglossal cyst
- Branchial cyst
- Thyroid and Parathyroid surgery
- Head and neck oncological masses
- Tracheostomy


Pediatric Thoracic Surgery

- Chest trauma
- Pneumothorax - Hemothorax
- Respiratory foreign body aspirations (Rigid-flexible bronchoscopy)
- Lung masses, cysts and parenchymal diseases
- Diaphragmatic diseases
- Thoracoscopic surgical interventions (Lung resection, biopsy)
- Surgical diseases of the esophagus


Pediatric Abdominal Surgery

- Abdominal trauma surgery and follow-up
- Bile duct and liver diseases – Laparoscopic
- Surgery for stomach, duodenum, small intestine, colon and rectum diseases
- Intestinal motility disorders (Constipation…)
- Spleen disease, cysts and masses
- Abdominal Tumors
- Esophago-Gastroscopy; Foreign body in esophagus and stomach
- Colonoscopy; Rectal bleeding, polyp excision, biopsy, etc.


Pediatric Urology

- Genito urinary anomalies;
- Hydronephrosis
- UPJ
- HIT
- Bladder dysfunction, bladder enlargement
- PUV
- Hypospadias
- Sex development anomalies
- Inguinal hernia
- Undescended Testicle
- Hydrocele
- Acute scrotum
- Cystoscopy (Laparoscopic)
- Urodynamic studies - Urinary incontinence


Pediatric Gynecology

- Child vaginal disorders
- Uterine disorders
- Ovarian cysts, masses and pathologies (Laparoscopic)


Pediatric Oncological Surgery

- Wilm's tumor
- Neuroblastoma
- Teratoma
- Hepatoblastoma- liver masses
- Other tumors - eg Rhabdomyosarcoma


Others

- Vascular interventions
- Central venous catheters: subclavian, jugular, hemodialysis
- Port catheter insertion
- Skin masses
- Ingrown nail
- Invagination with ultrasound guidance
- PEG catheter insertion
- Opening a rakeostomy

Education:

-> M.Sc. - FACULTY OF MEDICINE - GÜLHANE MILITARY FACULTY OF MEDICINE (1986-1992)
 
-> PhD - Specialization in Medicine - PEDIATRIC SURGERY - GÜLHANE MILITARY FACULTY OF MEDICINE PEDIATRIC SURGERY CLINIC (1995-1999)
 
-> Associate Professorship - PEDIATRIC SURGERY - GÜLHANE MILITARY FACULTY OF MEDICINE PEDIATRIC SURGERY (APRIL 2010)

-> Minor Specialization - PEDIATRIC UROLOGY - GÜLHANE MILITARY MEDICINE FACULTY (MAY 2011)



Academic Appointments:

- Trainee Lieutenant - Gülhane Military Medical Faculty (30.08.1992 - 01.05.1993)

- Medical Chief - 5th Main Jet Base Merzifon, Amasya (15.05.1993-15.09.1995)

- Research Assistant - Gulhane Military Medical Faculty, Department of Pediatric Surgery, Ankara (01.10.1995 - 01.10.1999)

- Specialist Doctor - Gulhane Military Medical Faculty, Department of Pediatric Surgery, Ankara (01.10.1999 - 15.05.2000)

- Specialist Doctor - Etimesgut Air Hospital, Ankara (15.05.2000 - 15.09.2005)

- Specialist Doctor - Albany School of Medicine, Department of Pediatric Urology, Albany, New York USA (15.10.2005 - 30.09.2006)

- Specialist Doctor - Albany School of Pharmacy, Research Laboratory Albany / New York / USA (15.10.2005 - 30.09.2006)

- Assist. Assoc. Dr - Gulhane Military Medical Faculty, Department of Pediatric Surgery, Ankara (15.10.2006 - 15.05.2010)

- Associate Professor - Gulhane Military Medical Faculty, Department of Pediatric Surgery, Ankara (15.05.2010 - 15.11.2016)

- Associate Professor - MedicalPark Hospital, Silvri, Istanbul (01.01.2017 - 01.06.2018)

- Associate Professor - Private Bodrum/Muğla ETİK Pediatric Surgery and Pediatric Urology Clinic (01.01.2019 - 01.01.2023)

- Associate Professor - Private Ataşehir/İstanbul ETİK Pediatric Surgery and Pediatric Urology Clinic (01.01.2023-ongoing)


Duties Performed in Projects:

 

“Effects of Benzamide, 3-Aminobenzamide, Proanthocyanidin, Mercaptoethylguanidine and 1400W on Caustic Esophageal Burns.” GATA Project (Manager)

 

“Effects of Melatonin, N-acetyl cysteine, 3-aminobenzamide, Mercaptoethylguanidine (MEG), 1400W, Hyperbaric Oxygen (HBO), and Ozone therapy in an Experimental Model of Necrotizing Enterocolitis in Newborn Rats.” GATA Project (Manager)

 

“Investigation of the Effects of İNOS and PARP inhibitors, Melatonin, Mercaptoethylguanidine and Ozone Therapy in the Renal Ischemia Reperfusion Model in Rats.” GATA Project (Researcher)

 

“Investigation of Efficacy of Mesenchymal Stem Cells in the Treatment of Experimental Esophageal Caustic Injury.” GATA Project (Researcher)

 

“Evaluation of Preclinical Atherosclerosis in Offspring of Pregnant Rats Exposed to Smoking.” GATA Project (Researcher)

 

Memberships to Scientific Organizations:


- Turkish Society of Pediatric Surgery, Pediatric Urology Society

 


Medical (academic) Awards:

 

VI. First Prize in the "Best Poster Award" at the National Nursing Congress with the poster named "The Effects of Mother's Education Level on the Behaviors of Urodynamic Children and Family" (1998)

 

9th National Pediatric Urology, First Prize in the "Best Poster Award" with the poster titled "The Protective Role of Mercaptoethylguanidine and S-Methilthioure in Kidney Ischemia-Reperfusion Injury" (2007)

 

35th National Physiology Congress, Third Place in the Field of Enlyi Poster Award with the poster named "Comparison of the Efficacy of HBO and Ozone Therapies in Experimental Acute Necrotizing Pancreatitis Model" (2009)

 

First Prize in Basic Medical Sciences by GATA Scientific Studies Evaluation Board (2010)

 

Dualism Award in Military Health Sciences by GATA Scientific Studies Evaluation Board (2011)

 

Third Prize in Surgical Sciences by GATA Scientific Studies Evaluation Board (2012)

 

Second Prize in Basic Medical Sciences by GATA Scientific Studies Evaluation Board (2013)

 

First Place in the Best Original Article category "Metabolic and Histopathological Effects of Fructose Intake During Pregestation, Gestation and Lactation in Rats and their Offspring" by the Journal of Clinical Research in Pediatric Endocrinology (2015)

  1. Tander B, Güven A, Demirbağ S, Ozkan Y, Oztürk H, Cetinkurşun S.  “A prospective, randomized, double-blind, placebo-controlled trial of glyceryl-trinitrate ointment in the treatment of children with anal fissure.”  J Pediatr Surg. 1999;34(12):1810-2. 

 

  1. Guven A, Onal B, Kogan BA.  “Spontaneous bladder perforations following augmentation cystoplasty in children.“  Nat Clin Pract Urol. 2006;3(11):584-5. 

 

  1. Onal B, Levin RM, Kogan BA, Guven A, Leggett RE, Mannikarottu AS.  “Novel alterations in superoxide dismutase and catalase activities in the female rabbit bladder subjected to hormonal manipulations.”  Int Urol Nephrol. 2007;39(4):1049-54. 

 

  1. Guven A, Onal B, Kalorin C, Whitbeck C, Chichester P, Kogan B, Levin R, Mannikarottu A.  “Long term partial bladder outlet obstruction induced contractile dysfunction in male rabbits: a role for Rho-kinase.”  Neurourol Urodyn. 2007;26(7):1043-9. 

 

  1. Guven A, Kalorin C, Onal B, Whitbeck C, Chichester P, Kogan BA, Levin RM, Mannikarottu A.  “Novel biomarkers of bladder decompensation after partial bladder obstruction.”  Neurourol Urodyn. 2007;26(7):1036-42. 

 

  1. Guven A, Lin WY, Leggett RE, Kogan BA, Levin RM, Mannikarottu A.  “Effect of aging on the response of biochemical markers in the rabbit subjected to short-term partial bladder obstruction.”  Mol Cell Biochem. 2007;306(1-2):213-9.

 

  1. Guven A, Giramonti K, Kogan BA.  “The effect of obesity on treatment efficacy in children with nocturnal enuresis and voiding dysfunction.”  J Urol. 2007;178(4):1458-62. 

 

  1. Guven A, Mannikarottu A, Whitbeck C, Chichester P, Leggett RE, Kogan BA, Levin RM.  “Effect of age on the response to short-term partial bladder outlet obstruction in the rabbit.”  BJU Int. 2007;100(4):930-4. 

 

  1. Lin WY, Levin RM, Chichester P, Leggett R, Juan YS, Johnson A, Neumann P, Whitbeck C, Guven A, Kogan B, Mannikarottu A.  “Effects of L-arginine and L-NAME on chronic partial bladder outlet obstruction in rabbit.”  Am J Physiol Regul Integr Comp Physiol. 2007;293(6):R2390-9. 

 

  1. Guven A, Demirbag S, Atabek C, Ozturk H.  “Spontaneous gastric perforation in a child with Burkitt lymphoma.”  J Pediatr Hematol Oncol. 2007;29(12):862-4.

 

  1. Lin WY, Mannikarottu A, Chichester P, Guven A, Johnson A, Neuman P, Juan YS, Schuler C, Kogan B, Levin RM.  “Changes in the smooth muscle of the corpora cavernosum related to reversal of partial bladder outlet obstruction in rabbits.”  J Androl. 2008;29(2):164-71. 

 

  1. Guven A, Kesik V, Deveci MS, Ugurel MS, Ozturk H, Koseoglu V.  “Post varicella hepatic actinomycosis in a 5-year-old girl mimicking acute abdomen.  Eur J Pediatr. 2008;167(10):1199-201. 

 

  1. Lin WY, Guven A, Juan YS, Neuman P, Whitbeck C, Chichester P, Kogan B, Levin RM, Mannikarottu A.  “Free radical damage as a biomarker of bladder dysfunction after partial outlet obstruction and reversal.”  BJU Int. 2008;101(5):621-6.

 

  1. Guven A, Lin WY, Neuman P, Kogan BA, Levin R, Mannikarottu A.  “Effect of age on the role of Rho-kinase in short-term partial bladder outlet obstruction.”  Urology. 2008;71(3):541-5. 

 

  1. Perez-Martinez FC, Mannikarottu A, Guven A, Chichester P, Juan YS, Lin WY, Levin RM.  “Expression of parathyroid-hormone- related protein in the partially obstructed rabbit bladder.”  Urol Int. 2008;81(1):82-6.

 

  1. Guven A, Demirbag S, Uysal B, Topal T, Erdogan E, Korkmaz A, Ozturk H.  “Effect of 3-amino benzamide, a poly(adenosine diphosphate-ribose) polymerase inhibitor, in experimental caustic esophageal burn.”  J Pediatr Surg. 2008;43(8):1474-9.

 

  1. Guven A, Uysal B, Akgul O, Cermik H, Gundogdu G, Surer I, Ozturk H, Korkmaz A.  “Scavenging of peroxynitrite reduces renal ischemia/reperfusion injury.”  Ren Fail. 2008;30(7):747-54. 

 

  1. Guven A, Gundogdu G, Sadir S, Topal T, Erdogan E, Korkmaz A, Surer I, Ozturk H.  “The efficacy of ozone therapy in experimental caustic esophageal burn.”  J Pediatr Surg. 2008;43(9):1679-84. 

 

  1. Guven A, Kogan BA.  “Undescended testis in older boys: further evidence that ascending testes are common.”  J Pediatr Surg. 2008;43(9):1700-4.

 

  1. Yanarates O, Guven A, Sizlan A, Uysal B, Akgul O, Atim A, Ozcan A, Korkmaz A, Kurt E.  “Ameliorative effects of proanthocyanidin on renal ischemia/reperfusion injury.”  Ren Fail. 2008;30(9):931-8. 

 

  1. Guven A, Tunc T, Topal T, Kul M, Korkmaz A, Gundogdu G, Onguru O, Ozturk H.  “Alpha-lipoic acid and ebselen prevent ischemia/reperfusion injury in the rat intestine.”  Surg Today. 2008;38(11):1029-35. 

 

  1. Demirbag S, Atabek C, Guven A, Oztas E, Surer I, Ozturk H, Yesildaglar N.  “Effects of pyrolytic carbon on postoperative adhesion formation in rats.”  Arch Gynecol Obstet. 2009;279(1):11-5. 

 

  1. Perez-Martinez FC, Juan YS, Lin WY, Guven A, Mannikarottu A, Levin RM.  “Expression of parathyroid hormone-related protein in the partially obstructed and reversed rabbit bladder.”  Int Urol Nephrol. 2009;41(3):505-11.

 

  1. Tunc T, Oter S, Güven A, Topal T, Kul M, Korkmaz A, Ongürü O, Sarici U.  “Protective effect of sulfhydryl-containing antioxidants against ischemia/reperfusion injury of prepubertal rat intestine.”  J Gastroenterol Hepatol. 2009;24(4):681-7.

 

  1. Caliskan B, Guven A, Atabek C, Gok F, Demirbag S, Surer I.  “Henoch-Schönlein purpura presenting with symptoms mimicking balanoposthitis.”  Pediatr Rep. 2009;1(1):e5. 

 

  1. Guven A, Gundogdu G, Uysal B, Cermik H, Kul M, Demirbag S, Ozturk H, Oter S.  “Hyperbaric oxygen therapy reduces the severity of necrotizing enterocolitis in a neonatal rat model.”  J Pediatr Surg. 2009;44(3):534-40.

 

  1. Kesik V, Guven A, Vurucu S, Tunc T, Uysal B, Gundogdu G, Oztas E, Korkmaz A.  “Melatonin and 1400 W ameliorate both intestinal and remote organ injury following mesenteric ischemia/reperfusion.”  J Surg Res. 2009;157(1):e97-e105. 

 

  1. Sizlan A, Guven A, Uysal B, Yanarates O, Atim A, Oztas E, Cosar A, Korkmaz A.  “Proanthocyanidin protects intestine and remote organs against mesenteric ischemia/reperfusion injury.  “World J Surg. 2009;33(7):1384-91.  

 

  1. Tunc T, Uysal B, Atabek C, Kesik V, Caliskan B, Oztas E, Ersoz N, Oter S, Guven A.  “Erdosteine and ebselen as useful agents in intestinal ischemia/reperfusion injury.”  J Surg Res. 2009;155(2):210-6.

 

  1. Ersoz N, Ozler M, Altinel O, Sadir S, Ozerhan IH, Uysal B, Topal T, Guven A, Korkmaz A.  “Melatonin prevents peritoneal adhesions in rats.”  J Gastroenterol Hepatol. 2009;24(11):1763-7. 

 

  1. Guven A, Gundogdu G, Vurucu S, Uysal B, Oztas E, Ozturk H, Korkmaz A.  “Medical ozone therapy reduces oxidative stress and intestinal damage in an experimental model of necrotizing enterocolitis in neonatal rats.”  J Pediatr Surg. 2009;44(9):1730-5

 

  1. Ersoz N, Guven A, Cayci T, Uysal B, Turk E, Oztas E, Akgul EO, Korkmaz A, Cetiner S.  “Comparison of the efficacy of melatonin and 1400W on renal ischemia/reperfusion injury: a role for inhibiting iNOS.”  Ren Fail. 2009;31(8):704-10. 

 

  1. Demirbag S, Atabek C, Caliskan B, Guven A, Sakarya MT, Surer I, Ozturk H.  “Bladder Dysfunction in İnfants with primary Vesicourethral Reflux”  J Int Med Res. 2009;37(6):1877-81.

 

  1. Oztas E, Guven A, Turk E, Uysal B, Akgul EO, Cayci T, Ersoz N, Korkmaz A.  “3-aminobenzamide, a poly ADP ribose polymerase inhibitor, attenuates renal ischemia/reperfusion injury.”  Ren Fail. 2009;31(5):393-9.

 

  1. Tunc T, Kesik V, Demirin H, Ersoz N, Vurucu S, Kul M, Uysal B, Sadir S, Guven A, Oztas E.  “Effects of Aminoguanidine and Melatonin on Intestinal Ischemia/Reperfusion Injury in Rats: An Assessor-Blinded, Controlled Experimental Study. “  Curr Ther Res. 2009;70(6): 449-59 

 

  1. Demirbag S, Uysal B, Guven A, Cayci T, Ozler M, Ozcan A, Kaldirim U, Surer I, Korkmaz A.  “Effects of medical ozone therapy on acetaminophen-induced nephrotoxicity in rats.”  Ren Fail. 2010;32(4):493-7. 

 

  1. Kesik V, Ozcan A, Sari E, Guven A, Kismet E, Koseoglu V.  “Alpha-fetoprotein producing tumor cells in children with Wilms' tumor.”  Fetal Pediatr Pathol. 2010;29(3):127-32. 

 

  1. Uysal B, Yasar M, Ersoz N, Coskun O, Kilic A, Cayci T, Kurt B, Oter S, Korkmaz A, Guven A.  “Efficacy of hyperbaric oxygen therapy and medical ozone therapy in experimental acute necrotizing pancreatitis. Pancreas.”  2010;39(1):9-15. 

 

  1. Cakir E, Akgul OE, Aydin I, Cayci T, Kurt YG, Onguru O, Aydin FN, Agilli M, Yaman H, Ersoz N, Bilgic S, Guven A, Turker T, Bilgi C, Erbil KM.  “The association between neopterin and acetaminophen-induced nephrotoxicity.”  Ren Fail. 2010;32(6):740-6.

 

  1. Yasar M, Uysal B, Kaldirim U, Oztas Y, Sadir S, Ozler M, Topal T, Coskun O, Kilic A, Cayci T, Poyrazoglu Y, Oter S, Korkmaz A, Guven A.  “Poly(ADP-ribose) polymerase inhibition modulates experimental acute necrotizing pancreatitis-induced oxidative stress, bacterial translocation and neopterin concentrations in rats.”  Exp Biol Med (Maywood). 2010;235(9):1126-33. 

 

  1. Caliskan B, Guven A, Ozler M, Cayci T, Ozcan A, Bedir O, Surer I, Korkmaz A.  “Ozone therapy prevents renal inflammation and fibrosis in a rat model of acute pyelonephritis.”  Scand J Clin Lab Invest. 2011;71(6):473-80. 

 

  1. Guven A, Uysal B, Caliskan B, Oztas E, Ozturk H, Korkmaz A. “Mercaptoethylguanidine attenuates caustic esophageal injury in rats: a role for scavenging of peroxynitrite.”  J Pediatr Surg. 2011;46(9):1746-52. 

 

  1. Guven A, Uysal B, Gundogdu G, Oztas E, Ozturk H, Korkmaz A.  “Melatonin ameliorates necrotizing enterocolitis in a neonatal rat model.”  J Pediatr Surg. 2011;46(11):2101-7. 

 

  1. Oztosun M, Akgul EO, Cakir E, Cayci T, Uysal B, Ogur R, Ozcan A, Ozgurtas T, Guven A, Korkmaz A.  “The effects of medical ozone therapy on renal ischemia/reperfusion injury.”  Ren Fail. 2012;34(7):921-5. 

 

  1. Uysal B, Demirbag S, Poyrazoglu Y, Cayci T, Yesildaglar N, Guven A, Sürer I, Korkmaz A.  “Medical ozone therapy decreases postoperative uterine adhesion formation in rats.”  Arch Gynecol Obstet. 2012;286(5):1201-7. 

 

  1. Karaoglu A, Tunc T, Aydemir G, Ongoru O, Aydinoz S, Uysal B, Erdem G, Guven A, Oztas E, Sarici SU.  “Effects of maternal smoking on fetal organs.”  Adv Clin Exp Med. 2012;21(4):441-6. 

 

  1. Türk E, Güven A, Karaca F, Edirne Y, Karaca I.  “Using the parents' video camera for the follow-up of children who have undergone hypospadias surgery decreases hospital anxiety of children.”  J Pediatr Surg. 2013;48(11):2332-5. 

 

  1. Malkoc E, Alp BF, Demirer Z, Guragac A, Dursun F, Ates F, Yildirim I, Yuksel R, Uysal B, Topal T, Kurt YG, Ozcan A, Guven A.  “Efficacy of poly(adenosine diphosphate-ribose) polymerase inhibition in extracorporeal shock wave-induced renal injury.”   Ren Fail. 2014 Nov;36(10):1564-9.

 

  1. Türk E, Memetoglu ME, Edirne Y, Karaca F, Saday C, Güven A.  “Inguinal herniotomy with the Mitchell-Banks' technique is safe in older children.”  J Pediatr Surg. 2014 Jul;49(7):1159-60.

 

  1. Alp BF, Malkoc E, Demirer Z, Guragac A, Turker T, Altayli E, Ozcan A, Uysal B, Topal T, Akgul EO, Yildirim I, Guven A.  “Inhibition of inducible nitric oxide synthase prevents shock wave therapy induced renal injury.”  Ren Fail. 2014 Jun;36(5):774-80.

 

  1. Sarı E, Yeşilkaya E, Bolat A, Topal T, Altan B, Fidancı K, Saldır M, Erdem G, Gülgün M, Kurt YG, Güven A.  “Metabolic and Histopathological Effects of Fructose Intake During Pregestation, Gestation and Lactation in Rats and their Offspring.”  J Clin Res Pediatr Endocrinol. 2015 Mar;7(1):19-26. 

 

  1. Türk E, Karaca İ, Ozcinar E, Celebiler A, Aybek H, Ortac R, Güven A.  “The effect of hypothermia on adnexal torsion/detorsion injury in a rat ovary model.”   J Pediatr Surg. 2015 Aug;50(8):1378-81

 

  1. Uğuz S, Demirer Z, Uysal B, Alp BF, Malkoc E, Guragac A, Turker T, Ateş F, Karademir K, Ozcan A, Yildirim I, Korkmaz A, Guven A.  “Medical ozone therapy reduces shock wave therapy-induced renal injury.” Ren Fail. 2016 Jul;38(6):974-81.

 

  1. Guven A. “ Crossing Renal Vessel Causing Ureteropelvic Junction Obstruction in Children.” J Integr Nephrol Androl 2016; 3: 31-2 

 

  1. Yapici AK, Uguz S, Bayram Y, Sari S, Karslioglu Y, Guven A, Ozturk S.  “Use of a fibrovascular tube in creation of neo-urethra during penile reconstruction.”  J Pediatr Urol. 2017 Jun;13(3):273.e1-273.e8.

 

  1. Gunduz M, Ciftci I, Yasti AC, Guven A.  “Red cell distribution width and neutrophil-to-lymphocyte ratio as a predictive factor in treatment of pediatric patients with burns.”  Int J Burns Trauma. 2020; 15;10(4):101-106. 
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