Browsing by Author "Caliskan, Kenan"

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Assessment of Atrial Fibrillation and Ventricular Arrhythmia Risk after Transplantation in Patients with End Stage Renal Disease by P Wave/QT Interval Dispersion, Tp-e Interval, Tp-e/QT Interval Ratio
(2018) Yilmaz, Mustafa; Altin, Cihan; Tekin, Abdullah; Arer, Ilker; Yabanoglu, Hakan; Caliskan, Kenan; Moray, Gokhan; Ozin, Bulent; Muderrisoglu, Haldun; Haberal, Mehmet; https://orcid.org/0000-0002-2557-9579; https://orcid.org/0000-0002-5658-870X; https://orcid.org/0000-0002-1161-3369; https://orcid.org/0000-0002-8767-5021; https://orcid.org/0000-0003-2498-7287; https://orcid.org/0000-0003-3821-412X; https://orcid.org/0000-0002-9635-6313; https://orcid.org/0000-0002-3462-7632; S-6973-2016; ABD-7304-2021; AAJ-7865-2021; AAJ-7201-2021; AAE-1041-2021; AAD-9938-2021; AAG-8233-2020; AAJ-8097-2021
Can red cell distribution width be used as a predictor of acute cholecystitis?
(2017) Arer, Ilker Murat; Yabanoglu, Hakan; Caliskan, Kenan; 0000-0003-0268-8999; 0000-0002-1161-3369; 0000-0002-8767-5021; 28740954; AAJ-7865-2021; AAJ-7201-2021; AAK-2011-2021
Objective: Acute cholecystitis is a common disease requiring accurate markers for diagnosis and proper treatment. The aim of this study was to investigate the role of red cell distribution width (RDW) in acute cholecystitis. Material and Methods: 299 were included in the study. The subjects were divided into 2 groups; group 1 (n: 46) acute cholecystitis group and group 2 (n:253) chronic cholecystitis group. The patients were compared with respect to demographic characteristics, white blood cell count, C-reactive protein, and red cell distribution width. Results: A statistically significant difference was observed between groups with respect to gender, white blood cell count, C-reactive protein, and red cell distribution width level (p<0.05). The mean red cell distribution width level of group 1 and 2 was 14.19 +/- 2.02% and 15.03 +/- 2.51%, respectively. Conclusion: Red cell distribution width level can be used as a predictor of acute cholecystitis. Multicenter prospective studies should be performed to elucidate the exact role of RDW level in acute cholecystitis.
Cardiac Function in Children After Kidney Transplantation
(2018) Arslan, Alev; Parmaksiz, Gonul; Noyan, Aytul; Caliskan, Kenan; Yildirim, Sedat; Haberal, Mehmet; 0000-0003-4444-0027; 0000-0003-2373-1837; 0000-0002-8767-5021; 0000-0002-5735-4315; 0000-0002-3462-7632; V-1112-2019; AAM-2935-2021; AAD-5713-2021; AAJ-7201-2021; AAF-4610-2019; AAJ-8097-2021
THE CHANGE OF FRONTAL QRS-T ANGLE AFTER RENAL TRANSPLANTATION IN DIALYSIS PATIENTS
(2020) Acibuca, Aynur; Yilmaz, Mustafa; Okar, Sefa; Kus, Murat; Caliskan, Kenan; Torer, Nihan; Torun, Dilek; Moray, Gokhan; Muderrisoglu, Haldun; Haberal, Mehmet A.
Comparison of the Early Term Complications and Patency Rates of the Standard (Parachute) and Diamond-Shaped End-To-Side Anastomosis Techniques in Arteriovenous Fistulas Created for Hemodialysis
(2018) Yabanoglu, Hakan; Kus, Murat; Arer, Ilker Murat; Bali, Cagla; Avci, Tevfik; Akdur, Aydincan; Caliskan, Kenan; https://orcid.org/0000-0002-1161-3369; https://orcid.org/0000-0001-6529-7579; https://orcid.org/0000-0003-2615-1918; https://orcid.org/0000-0001-5225-959X; https://orcid.org/0000-0002-8726-3369; https://orcid.org/0000-0002-8767-5021; 30060787; AAJ-7865-2021; AAJ-7870-2021; AAI-8790-2021; AAF-1698-2021; AAA-3068-2021; AAJ-7201-2021
Objective: To compare the early-term patency and complication rates of the end-to-side anastomosis techniques parachute and diamond-shaped techniques in arteriovenous fistulas. Study Design: Prospective randomised study. Place and Duration of Study: Department of General Surgery, Adana Baskent University Application and Research Hospital, Adana, Turkey, between October 2014 and January 2015. Methodology: Patients with end stage renal disease who underwent arteriovenous fistula creation for hemodialysis were grouped into two according to the anastomosis technique performed. Group 1 was composed of the patients undergoing the standard parachute technique and Group 2 consisted of the patients operated with the diamond-shaped anastomosis technique. The two groups were compared with each other with respect to clinical and demographic data, operative and postoperative variables, and complication and patency rates. Results: A total of 56 patients underwent arteriovenous fistula creation. The overall complication rate was 12.5%. The early-term patency rate was higher in the diamond-shaped anastomosis technique than the standard parachute end-to-side anastomosis technique. Effective dialysis was established after 4 weeks in 48 (85.7%) patients in the overall study group, 23 (82.1%) in Group 1, and 25 (89.2%) in Group 2. However, there was no significant difference between both the techniques with respect to effectiveness of dialysis. Conclusion: Both end-to-side anastomosis techniques have their own advantages and disadvantages. Using a patient-specific suitable technique rather than a standard technique would be more appropriate in arteriovenous fistulas formation.
Corner-Saving Renal Artery Anastomosis for Renal Transplantation
(2018) Akdur, Aydincan; Kus, Murat; Moray, Gokhan; Yildirim, Sedat; Karakayali, Feza Yarbug; Caliskan, Kenan; Haberal, Mehmet; 0000-0002-8726-3369; 0000-0001-6529-7579; 0000-0003-2498-7287; 0000-0002-5735-4315; 0000-0002-1874-947X; 0000-0002-8767-5021; 0000-0002-3462-7632; AAA-3068-2021; AAJ-7870-2021; AAE-1041-2021; AAF-4610-2019; AAB-3888-2021; AAJ-7201-2021; AAJ-8097-2021
Deceased-donor transplantation activities at Baskent University
(2019) Haberal, Mehmet; Kirnap, Mahir; Akdur, Aydincan; Moray, Gokhan; Karakayali, Feza Yarbug; Yildirim, Sedat; Caliskan, Kenan; Torgay, Adnan; Arslan, Gulnaz
Deceased-donor transplantation activities in Turkey
(2019) Haberal, Mehmet; Akdur, Aydincan; Moray, Gokhan; Karakayali, Feza Yarbug; Yildirim, Sedat; Caliskan, Kenan; Torgay, Adnan; Arslan, Gulnaz
Early Infections in Renal Transplant Recipients: Incidence, Risk Factors, and Causative Microorganisms
(2015) Yabanoglu, Hakan; Aliskan, Hikmet Eda; Caliskan, Kenan; Arer, Ilker; Akdur, Aydincan; Yildirim, Sedat; Moray, Gokhan; Haberal, Mehmet; 0000-0002-1161-3369; 0000-0002-8726-3369; 0000-0002-5735-4315; 0000-0001-9060-3195; 0000-0002-8767-5021; 0000-0002-3462-7632; 0000-0003-0268-8999; 0000-0003-2498-7287; 26640902; AAJ-7865-2021; AAA-3068-2021; AAF-4610-2019; AAE-2282-2021; AAJ-7201-2021; AAJ-8097-2021; AAK-2011-2021; AAE-1041-2021
Objectives: This study aimed to compare renal transplant recipients with and without infection with respect to demographic and clinical characteristics as well as risk factors; to determine the incidence of posttransplant infections; and to study the antibiotic resistance patterns of bacterial species identified as the causative organisms in posttransplant infections. Materials and Methods: This study included a total of 136 patients undergoing renal transplant in a 4-year period. The patients were categorized into 2 groups. The 2 groups were compared with each other with respect to general clinical and demographic variables and the number and frequency of infectious attacks within a 1-year follow-up, infection type, and antibiotic resistance patterns. Results: Ninety-two (67.6%) of the subjects were male and 44 (32.4%) were female. A total of 57 (41.9%) patients developed 128 infectious attacks. Urinary tract infections were the most common infections (42.1%). There was a significant correlation between a clinically relevant urinary culture proliferation and postoperative infection rate (P =.002). There was a significant correlation between antimicrobial resistance and the number of infectious attacks (P =.023). There was a significant correlation between the proliferation of Extended Spectrum Beta Lactamase-positive Enterobactericeae species and the number of infectious attacks (P =.000). Conclusions: Presence of a clinically relevant proliferation in the preoperative urinary culture, which was identified as a risk factor for infection, increased the number of infectious attacks. Moreover, Extended Spectrum Beta Lactamase-positive Enterobactericeae species increased the number of infections. These 2 principle results should be taken into account in patient management.
The Effect of the Use of Synthetic Mesh Soaked in Antibiotic Solution on the Rate of Graft Infection in Ventral Hernias: A Prospective Randomized Study
(2015) Yabanoglu, Hakan; Arer, Ilker Murat; Caliskan, Kenan; 25590831
Wound infections and seroma formations are important problems in ventral hernia repair operations using synthetic mesh grafts. The aim of this study was to investigate the effect of the use of synthetic mesh soaked in vancomycin solution on the rate of graft infection. The total number of subjects was 52. The subjects were randomized into 2 groups using a software program. Group 1 (n = 26) was the control group. In group 2 (n = 26), synthetic mesh was soaked in a Vancomycin solution before it was implanted. The patients were compared with respect to demographic characteristics and preoperative, intraoperative, and postoperative variables. There were no significant differences between the groups with respect to the available variables. Seroma development was significantly more common in group 2 (P < 0.041). Three patients (5.7%) developed superficial wound infection, and 9 (17%) developed surgical site infection 2-type wound-site infection. No significant difference was found between the groups in terms of infection. The use of synthetic mesh soaked in vancomycin solution had no beneficial effects on the rate of wound-site infection. Future randomized, controlled, large-scale studies using the same mesh and suture types, and meshes soaked in larger spectrum antibiotics are needed.
Four-Year Analyses of Renal Graft Biopsies: A Single-Center Pathology Experience
(2017) Canpolat, Tuba; Ozdemir, Binnaz Handan; Torun, Dilek; Caliskan, Kenan; Haberal, Mehmet; https://orcid.org/0000-0002-7528-3557; https://orcid.org/0000-0002-6267-3695; https://orcid.org/0000-0002-8767-5021; https://orcid.org/0000-0002-3462-7632; 27099951; AAK-8107-2021; X-8540-2019; AAD-9111-2021; AAJ-7201-2021; AAJ-8097-2021
Objectives: Kidney transplant is the best treatment for patients with end-stage renal disease. Long-term graft survival depends on the protection of renal allograft function. Renal allograft biopsy is the most important method for examining an allograft function. Biopsy provides critical information, enabling diagnosis and grading of pathologic changes, prediction of response to therapy, and long-term graft prognosis. Materials and Methods: We reviewed the medical records of patients who underwent renal transplant from living and deceased donors at Baskent University Adana Teaching and Research Hospital between 2010 and 2014 and who had an indication for biopsy. Clinical characteristics and laboratory results of patients were recorded. Patient biopsy samples were examined according to the Banff 2009 classification. Results: Between 2010 and 2014, there were 175 renal transplants performed at our hospital, with 134 recipients (76.6%) having living-donor and 41 recipients (23.4%) having deceased-donor transplants. Fifty-one patients (29.1%) were children, and 124 patients (70.9%) were adults. We found that there were 123 biopsies made from 75 transplant patients over a 4-year period. When examined according to Banff 2009 criteria, the biopsy samples revealed acute T-cell-mediated rejection alone in 14.1% of the samples, acute antibody-mediated rejection in 4%, and a combination of the 2 rejections in 5.7%. Specific infections were detected in 12 patients. The graft nephrectomy rate was 5.1%. Conclusions: This study investigated biopsy results, their relation with patient clinical status and 4-year survival rates, and our pathology experience and found that rejection and infection rates were similar to the literature. Our future studies with a longer follow-up and a larger sample size will likely provide more accurate information about graft survival and biopsy results.
Investigation of miRNA and Anti HLA Antibodies Correlation in Patients with Kidney Transplant
(2018) Basturk, Bilkay; Sozer, Oktay; Kantaroglu, Bircan; Caliskan, Kenan; Torun, Dilek; Noyan, Aytul; Haberal, Mehmet; 0000-0002-8784-1974; 0000-0002-8767-5021; 0000-0002-6267-3695; 0000-0002-3462-7632; AAD-6918-2021; AAJ-7201-2021; AAD-9111-2021; AAD-5713-2021; AAJ-8097-2021
Laparoscopic Repair of Morgagni Hernia
(2015) Arer, Ilker Murat; Yabanoglu, Hakan; Aytac, Huseyin Ozgur; Caliskan, Kenan; Torer, Nurkan
Morgagni hernia is a congenital herniation of abdominal contents into the thoracic cavity through a retrosternal diaphragmatic defect and make up about 1 % - 5 % of all types of congenital diaphragmatic hernias. Surgical repair of Morgagni hernias is usually indicated when patients are symptomatic and have a high risk of strangulation or incarceration of the contained viscera. 71-year-old male patient admitted to emergency department with a 2-day history of abdominal pain, vomiting and obstipation. Laparoscopic repair for Morgagni hernia was performed. Laparoscopic repair for Morgagni hernia with mesh repair is secure, satisfactory and easily performed.
LIVER TRANSPLANTATION FOR PRIMARY SCLEROSING CHOLANGITIS
(2020) Akdur, Aydincan; Karakaya, Emre; Bovyat, Fatih; Yildirim, Sedat; Caliskan, Kenan; Haberal, Mehmet
LONG-TERM RESULTS OF LIVING DONOR KIDNEY TRANSPLANTATION
(2020) Akdur, Aydincan; Karakayali, Feza Yarbug; Caliskan, Kenan; Moray, Gokhan; Arslan, Gulnaz; Haberal, Mehmet A.
Long-term results of retromuscular hernia repair: a single center experience
(2017) Arer, Ilker Murat; Yabanoglu, Hakan; Aytac, Huseyin Ozgur; Ezer, Ali; Caliskan, Kenan; 0000-0002-3583-9282; 0000-0002-1161-3369; 0000-0002-3834-9924; 0000-0002-8767-5021; 0000-0003-0268-8999; 28904662; AAJ-7865-2021; AAJ-7913-2021; AAJ-8558-2021; AAJ-7201-2021; AAK-2011-2021
Introduction: Incisional hernia (IH) is one of the most frequent postoperative complications after abdominal surgery. There are multiple surgical techniques described for IH repair. The aim of the study is to evaluate the effect of primary fascial closure on long-term results in retromuscular hernia repair (RHR) for incisional hernias. Methods: A total of 132 patients underwent RHR for IH were included in our study. 109 patients were evaluated in 2009 and 55 patients in 2015 for short and long-term results. Results: Among 132 patients perfromed RHR, fascia was closed in 107 (81%) and left open in 25 (19%) patients. The mean age of patients was 57.9 +/- 11.8 years. Average mesh area was 439.8 +/- 194.6 cm(2), hernia area was 112 +/- 77.5 cm(2) and open area after repair was 40.8 +/- 43.3 cm(2). Mean follow-up of 104 patients regarding postoperative complications evaluated in 2009 was 30.7 +/- 14.1 months. Recurrent IH was observed in 6 (4.5%) patients according to data collected in 2009. Long-term results were; mean follow-up period was 91 +/- 20.2 months (20-112 months) and recurrent IH was observed in 4 (7.3%) patients. Conclusion: Retromuscular repair for incisional hernia regardless of the fascial closure gives high patient satisfaction, less recurrence rates and complications in long-term follow-up.
Mucormycosis with Orbital Apex Syndrome in a Renal Transplant Recipient
(2015) Haberal, Mehmet; Kursun, Ebru; Turunc, Tuba; Demiroglu, Yusuf Ziya; Yabanoglu, Hakan; Demir, Senay; Caliskan, Kenan; Moray, Gokhan; Arslan, Hande
Mucormycosis is a rarely encountered invasive fungal infection with high mortality. Solid organ transplantation is one of the risk factors for mucormycosis. Mucormycosis can be classified in six different groups according to the anatomical localization; rhinocerebral, pulmonary, cutaneous, gastrointestinal, disseminated, and other less common involvements. This paper presented a mucormycosis case with rhinoorbitocerebral involvementin a renal transplantation receiver, which manifested with orbital apex syndrome.
Prophylactic Oral Calcium Supplementation Therapy to Prevent Early Post Thyroidectomy Hypocalcemia and Evaluation of Postoperative Parathyroid Hormone Levels to Detect Hypocalcemia: A Prospective Randomized Study
(2017) Arer, Ilker Murat; Kus, Murat; Akkapulu, Nezih; Aytac, Huseyin Ozgur; Yabanoglu, Hakan; Caliskan, Kenan; Tarim, Mehmet Akin; 0000-0001-7392-961X; 0000-0003-0268-8999; 0000-0002-3583-9282; 0000-0001-6529-7579; 0000-0002-1161-3369; 0000-0002-8767-5021; 28039060; AAM-8548-2021; AAK-2011-2021; AAJ-7913-2021; AAJ-7870-2021; AAJ-7865-2021; AAJ-7201-2021
Background: Postoperative hypocalcemia is the most common complication after total thyroidectomy. Postoperative parathyroid hormone (PTH) measurement is one of the methods to detect or prevent postoperative hypocalcemia. Prophylactic oral calcium supplementation is another method to prevent early postoperative hypocalcemia. The aim of this study is to detect the accurate timing of PTH and evaluate efficacy of routine oral calcium supplementation for postoperative hypocalcemia. Methods: A total of 106 patients were performed total thyroidectomy. Rotuine oral calcium supplementation was given to group 1 and no treatment to group 2 according to randomization. Serum calcium and PTH level of patients in group 2 at postoperative 6, 12 and 24 h and patients in both groups at postoperative day 7 were evaluated. Patients were compared according to age, sex, operation findings, serum calcium and PTH levels and symptomatic hypocalcemia. Results: Half of the patients (50%) were in group 1. Most of the patients were female (83%). The most common etiology of thyroid disease was multinodular goiter (64.1%). Oral calcium supplementation was given to 18 (33.9%) patients in group 2. Symptomatic hypocalcemia for group 1 and 2 was found to be 1.9 and 33.9% respectively (p < 0.05). No statistical difference can be observed regarding the timing of serum biomarkers. Conclusion: Serum PTH levels at postoperative 12 and 24 h can predict early post-thyroidectomy hypocalcemia. Prophylactic oral calcium supplementation therapy can prevent early post-thyroidectomy hypocalcemia with advantages of being cost effective and safe. (C) 2016 IJS Publishing Group Ltd.
A Rare Cause of Acute Pancreatitis: Unexpected Travel of the Biliary Catheter
(2016) Aytac, Huseyin Ozgur; Caliskan, Kenan; 26966629
Results of Biliary Reconstruction Using a Polytetrafluoroethylene Graft in Liver Transplant Patients
(2017) Haberal, Mehmet; Soy, Ebru H. Ayvazoglu; Moray, Gokhan; Caliskan, Kenan; Yildirim, Sedat; Torgay, Adnan; 0000-0003-2498-7287; 0000-0002-5735-4315; 0000-0002-0993-9917; 0000-0002-3462-7632; 0000-0002-8767-5021; 0000-0002-6829-3300; 28260438; AAE-1041-2021; AAF-4610-2019; AAC-5566-2019; AAJ-8097-2021; AAJ-7201-2021; AAJ-5221-2021
Objectives: Biliary complications after liver transplant are a major concern with their high incidence, the need for repeated and long-term treatment, and their potential effects on graft and patient survival. We report our experience with biliary anastomosis using a spiral polytetrafluoroethylene graft. Materials and Methods: Between December 8, 1988, and July 2016, we performed 538 liver transplant procedures. We used a spiral polytetrafluoroethylene graft for biliary anastomosis in 10 patients: for biliary stricture reconstruction after liver transplant in 4 patients and during the primary liver transplant in 6 patients. Results: Four patients who underwent biliary stricture reconstruction are doing well, with normal liver function. Of the 6 patients who received the graft during primary liver transplant, 2 died from sepsis, although they maintained normal liver function. Of the 4 living patients, 1 had a biliary complication that was reconstructed surgically. The 4 living patients are currently doing well, with normal liver function. Conclusions: Our small series of patients shows that the use of a spiral polytetrafluoroethylene graft is effective at reducing biliary complications in transplant patients.