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Dive into the research topics where Ahmet Gökhan Türkçapar is active.

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Featured researches published by Ahmet Gökhan Türkçapar.


Annals of Surgery | 2001

Effect of Single-Dose Prophylactic Ampicillin and Sulbactam on Wound Infection After Tension-Free Inguinal Hernia Repair With Polypropylene Mesh: The Randomized, Double-Blind, Prospective Trial

Mehmet Ali Yerdel; Emin B. Akin; Sukru Dolalan; Ahmet Gökhan Türkçapar; Mevlut Pehlivan; Ibrahim E. Gecim; Ercüment Kuterdem

ObjectiveTo assess the value of single-dose, intravenous, prophylactic ampicillin and sulbactam (AS) in the prevention of wound infections during open prosthetic inguinal hernia repair by a double-blind, prospective, randomized trial. Summary Background DataThe use of antibiotic prophylaxis during open prosthetic inguinal hernia surgery is controversial, and no prospective trial has been conducted to examine this issue. MethodsPatients undergoing unilateral, primary inguinal hernia repair electively with the Lichtenstein technique using polypropylene mesh were randomized to receive 1.5 g intravenous AS before the incision or an equal volume of placebo according to a predetermined code of which the surgeons were unaware. Patients with recurrent, femoral, bilateral, giant, or incarcerated hernias or any systemic diseases were excluded. Age, sex, body mass index, American Society of Anesthesiologists score, type of hernia, type of anesthesia, duration of surgery, and use of drains were recorded. Infection was defined according to the criteria of Centers for Disease Control. Patients were evaluated 1 week, 1 month, 6 months, and 1 year after surgery by an independent surgeon. All complications were recorded. Results were assessed using chi-square, Fisher’s exact, and Student t tests as appropriate. ResultsBetween September 1996 and July 1998, 280 patients (140 AS, 140 placebo group) entered the protocol. Four patients from the AS group and seven from the placebo group were excluded because of inadvertent antibiotic administration or follow-up problems. Groups were well matched for all the variables studied and postoperative complications, excluding wound infections, which occurred at a rate of 0.7% in the AS group and 9% in the placebo group (P = .00153). Twelve patients in the placebo group developed wound infections, requiring five repeat hospital admissions in three patients. These three patients suffered deep infections reaching the graft, which resulted in graft loss in two. The single infected patient in the AS group had his graft removed as well because of deep persistent infection. ConclusionsThis study documented a significant (10-fold) decrease in overall wound infections when single-dose, intravenous AS was used during Lichtenstein hernia repair. Deep infections and wound infection-related readmissions were also reduced by the use of AS. Proponents of mesh repairs may therefore be advised to use prophylactic single-dose intravenous antibiotic coverage in the light of the results of this trial. AS proved to be an effective antimicrobial agent.


American Journal of Surgery | 1999

Direct trocar insertion versus veress needle insertion in laparoscopic cholecystectomy

Mehmet Ali Yerdel; Kaan Karayalcin; Ayhan Koyuncu; Barış Akin; Cüneyt Köksoy; Ahmet Gökhan Türkçapar; Nezih Erverdi; Iskender Alacayir; Cihan Bumin; Nusret Aras

BACKGROUND Direct insertion of the trocar is an alternative method to Veress needle insertion for the creation of pneumoperitoneum. The safety of direct disposable shielded trocar insertion for the creation of pneumoperitoneum was assessed by comparing with Veress needle insertion during laparoscopic cholecystectomy (LC). METHODS One thousand five hundred patients undergoing LC with pneumoperitoneum were included in this study. In 470 patients the Veress needle insertion technique was used, and in 1,030 patients direct trocar insertion technique was used. Patients having indications for open trocar insertion were excluded from the study. RESULTS Complication rate was significantly higher in the Veress needle group (14% versus 0.9%; P <0.01), and the two major complications, gastric perforation and iliac artery laceration, were also encountered in this group. CONCLUSIONS Our results suggest that with a lower complication rate, direct insertion of the disposable trocar is a safe alternative to Veress needle insertion technique for the creation of pneumoperitoneum. Such an approach has further advantages such as less cost/instrumentation and rapid creation of pneumoperitoneum.


World Journal of Surgery | 2007

Assessment of Quality of Life after Laparoscopic Nissen Fundoplication in Patients with Gastroesophageal Reflux Disease

Deniz Balci; Ahmet Gökhan Türkçapar

BackgroundIn this study two different quality of life items are compared, and correlation of patient satisfaction with preoperative and postoperative symptoms after laparoscopic Nissen fundoplication (LNF) for chronic gastroesophageal reflux disease is evaluated.Materials and MethodsBetween December 2002 and December 2004, 60 patients with a diagnosis of chronic gastroesophageal reflux disease scheduled for laparoscopic Nissen fundoplication were recruited prospectively and volunteered to participate in this study. Patients underwent endoscopy, and their disease-specific symptoms were scored on a scale. Quality of life was measured preoperatively and in the first and sixth postoperative months with two questionnaires: Short Form-36 (SF 36) (preoperatively) and the Gastroesophageal Reflux Disease—Health-Related Quality of Life (GERD-HRQL) (postoperatively).ResultsIn more than 90% of the patients, typical symptoms (regurgitation and pyrozis) were controlled postoperatively (p < 0.001). In the first postoperative month, however, dysphagia (early dysphagia) was seen in 46 (76%) patients, whereas in the sixth postoperative month (late dysphagia) its incidence decreased to only 2 (3.3%) patients. Similarly, in the first postoperative month 42 (70%) patients had gas bloating, but the incidence of this symptom decreased to 26 (43.3%) patients by the sixth month (p = 0.01). The quality-of-life measurements obtained from both SF 36 and GERD-HRQL showed that quality of life of the patients improved significantly in the related domain of each item after surgery (p < 0.001).ConclusionsLaparoscopic Nissen fundoplication is an effective operation that controls the typical symptoms and improves the quality of life of patients, but new-onset symptoms affect postoperative well-being. For closer evaluation of the benefits of the operation, we need new questionnaires that comprehensively evaluate the symptom spectrum of GERD both preoperatively and postoperatively.


World Journal of Surgery | 2007

Laparoscopıc Fundoplication with Prosthetic Hiatal Closure

Ahmet Gökhan Türkçapar; Ilknur Kepenekci; Hatim Mahmoud; Acar Tuzuner

BackgroundDespite the good results reported after laparoscopic fundoplication, failure is still a major problem. Hiatal disruption is one of the common patterns of anatomical failure. The aim of this study was to compare the results of suture repair of diaphragmatic crura with routine polypropylene mesh reinforcement in addition to suture repair.MethodsA total of 551 patients who underwent laparoscopic fundoplication for gastroesophageal reflux disease between March 1998 and July 2004 were included into the study. Crural closure had been performed with simple primary suture repair alone between March 1998 and July 2002 (n = 335, group I), and mesh reinforcement of the hiatal repair was performed routinely thereafter (n = 176, group II). These groups were evaluated prospectively.ResultsWe observed a significantly lower rate of recurrence in group II than in group I. After a 2-year follow-up, the rate of anatomic morphologic recurrence was 6.0% in group I and 1.8% in group II. Considering the recurrence rate, there was significant statistical difference. The overall recurrence rate in our series was 4.6%. There was no correlation between the size of the hernia and recurrence. No significant difference was found between groups regarding the rate of postoperative dysphagia. We have not observed any complications related to the use of polypropylene mesh in group II.ConclusionThe results of this study suggest that polypropylene mesh reinforcement increases the success rate for laparoscopic hiatal hernia repair without causing an additional complication burden. We propose routine use of mesh reinforcement in laparascopic antireflux surgery.


Surgery Today | 1998

REPAIR OF MIDLINE INCISIONAL HERNIAS USING POLYPROPYLENE GRAFTS

Ahmet Gökhan Türkçapar; Mehmet Ali Yerdel; Kuzey Aydinuraz; Sancar Bayar; Ercüment Kuterdem

We report herein our results of routinely performing tension-free repair for midline incisional hernias larger than 3 cm using a woven polypropylene graft between January 1990 and December 1995. Included in this study were 45 patients, 34 (73.1%) of whom had previously undergone a primary repair which had failed. The follow-up period ranged from 3 to 56 months with a mean of 36 months. Only one patient (2.2%) suffered a recurrence of the hernia. Although three (6.6%) developed a wound infection, one (2.2%) developed a wound sinus, and two (4.4%) developed wound seroma, none of these complications required removal of the graft. The findings of this study led us to conclude that Prolene grafts could be used as routine prosthetic material in the repair of incisional hernias. Moreover, during the follow-up period we observed that the modifications we made in the operative technique had a significantly positive effect on the outcome of the patients.


Surgical Laparoscopy Endoscopy & Percutaneous Techniques | 2007

Cannula site insertion technique prevents incisional hernia in laparoscopic fundoplication.

Hatim Mahmoud; Evren H. Ustuner; Ulas Sozener; Salih E. Ozis; Ahmet Gökhan Türkçapar

Introduction Incisional hernia is a common surgical problem encountered after laparotomies. The so-called trocar-site or port-site hernia is a type of incisional one that occurs after laparoscopic procedures. It has an incidence range between 0.1% and 3%. Objective To evaluate our patients who underwent laparoscopic Nissen fundoplication for presence of trocar-site hernia. Patients and Methods This study included 405 patients who underwent laparoscopic Nissen fundoplication in Ankara University, Faculty of Medicine, Department of General Surgery, Turkey. The patients were evaluated by physical examination and anterior abdominal wall ultrasound (US). Results Trocar-site hernia was not detected in any of our cases either by physical examination or by US. Conclusions Trocar-site hernia is a rare complication of laparoscopy. It occurs at the trocar insertion site with a diameter of 10 mm or more in adult patients. Trocar insertion away from the midline can decline the incidence.


Surgery Today | 1998

The Adverse Effects of Octreotide on the Healing of Colonic Anastomoses in Rats

Ahmet Gökhan Türkçapar; S. Demirer; N. Sengul; Sadik Ersoz; Ercüment Kuterdem; N. Renda; Isinsu Kuzu

Octreotide, a long-acting somatostatin analogue, is widely used in gastrointestinal hypersecretory states and also for endocrine tumors in an attempt to inhibit the paracrine hormones. Although it is well known that octreotide inhibits trophic and anabolic hormones, no research has been conducted on its adverse effects on wound healing. In the present study, groups of rats were given 20 mcg/kg/day octreotide and 100 mg/kg/day hydrocortisone, the latter being the negative control group, starting 5 days preoperatively. The colonic anastomoses were assessed for healing on postoperative days (PODs) 5 and 8 by detemining the bursting pressure of the anastomoses, performing histopathological analysis, and measuring the hydroxyproline content of the anastomotic tissues. Octreotide was found to affect anastomotic healing negatively on both PODs 5 and 8, but the negative effect of hydrocortisone was significant only on POD 8. No significant difference was found between the adverse effects of the two agents on POD 8. These findings indicated that octreotide has an adverse effect on the healing of colonic anastomoses in rats.


Surgical Laparoscopy Endoscopy & Percutaneous Techniques | 2009

Mesh erosion as a complication of laparoscopic fundoplication with prosthetic hiatal closure: report of a case.

Ilknur Kepenekci; Ahmet Gökhan Türkçapar

Background Laparoscopic fundoplication has become the standard procedure for surgical management of gastroesophageal reflux disease. Simple cruroplasty is associated with a high recurrence rate and most authors recommend the use of prosthetic meshes for crural closure. Methods Herein we report a patient who was admitted with the complaint of severe dysphagia a year after laparoscopic fundoplication with prosthetic hiatal closure. Results The patient presented with mesh erosion into the esophagus and required a distal esophageal resection. Conclusions This case demonstrates that appropriate surgical technique is important for preventing mesh-related complications. A small-sized mesh should be placed so as to have no contact with the esophagus and should be secured sufficiently to the diaphragmatic crura to avoid the potential complications of mesh reinforcement.


Medicine | 2017

Laparoscopic revision surgery for gastroesophageal reflux disease.

Haydar Celasin; Volkan Genç; Suleyman Utku Celik; Ahmet Gökhan Türkçapar

Abstract Laparoscopic antireflux surgery is a frequently performed procedure for the treatment of gastroesophageal reflux in surgical clinics. Reflux can recur in between 3% and 30% of patients on whom antireflux surgery has been performed, and so revision surgery can be required due to recurrent symptoms or dysphagia in approximately 3% to 6% of the patients. The objective of this study is to evaluate the mechanism of recurrences after antireflux surgery and to share our results after revision surgery in recurrent cases. From 2001 to 2014, revision surgery was performed on 43 patients (31 men, 12 women) between the ages of 24 and 70 years. The technical details of the first operation, recurrence symptoms, endoscopy, and manometry findings were evaluated. The findings of revision surgery, surgical techniques, morbidity rates, length of hospitalization, and follow-up period were also recorded and evaluated. The first operation was Nissen fundoplication in 34 patients and Toupet fundoplication in 9 patients. Mesh hiatoplasty was performed for enforcement in 18 (41.9%) of these patients. The period between the first operation and the revision surgery ranged from 4 days to 60 months. The most common finding was slipped fundoplication and presence of hiatal hernia during revision surgery. Revision fundoplication and hernia repair with mesh reinforcement were used in 33 patients. The other techniques were Collis gastroplasty, revision fundoplication, and hernia repair without mesh. The range of follow-up period was from 2 to 134 months. Recurrence occurred in 3 patients after revision surgery (6.9%). Although revision surgery is difficult and it has higher morbidity, it can be performed effectively and safely in experienced centers.


Turkish Journal of Surgery | 2017

The effects of sleeve gastrectomy on shoe size one year after surgery

Ozan Şen; Ahmet Gökhan Türkçapar; Mehmet Ali Yerdel

Objective The aim of this study is to evaluate the effects of sleeve gastrectomy on shoe size one year after the procedure. To our knowledge, no study has yet been conducted addressing this issue. Material and Methods Patients who were prepared for sleeve gastrectomy were eligible for the study, and all data and preoperative shoe sizes were recorded in our prospective database. At the 12th month of follow-up, each patients excess weight loss % was calculated, and their shoe sizes were recorded by verbal report. Arbitrary or half-size changes were not taken into consideration. The probability of a change in shoe size and the effects of age, sex, preoperative body mass index, and 12th month excess weight loss % on this change were investigated. p<0.05 was regarded as statistically significant. Results The subjects of the study were 212 patients who completed their 12-month follow-ups after sleeve gastrectomy between January 2012 and February 2016. The mean shoe size was 41.5; this decreased to 40.5 one year after sleeve gastrectomy (p<0.001). In patients with body mass index (BMI)>50, both the mean decrease (p=0.008) and the percentage of at least two size decreases (p=0.009) were significantly higher than those in patients with BMI<40. Age, sex, and excess weight loss % did not have any significant effects on shoe size. Conclusion Sleeve gastrectomy was clearly associated with decrease in shoe size after 12 months. Only preoperative body mass index was found to be directly associated with this decrease.

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