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Search Results: 1 - 10 of 482 matches for " Serdar Kabatas "
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A Case of Pituitary Hemorrhage Following Cardiopulmonary Bypass Surgery  [PDF]
Ozgen Ilgaz Kocyigit, Serdar Kabatas, Erdinc Civelek, Ezgi Tuncay, Oguz Omay, Tufan Cansever, Ayda Turkoz
Surgical Science (SS) , 2011, DOI: 10.4236/ss.2011.23034
Abstract: A 68-year-old female patient with previous history of transsphenoidal hypophysectomy operation underwent three-vessel coronary artery bypass graft (CABG) surgery for extensive coronary artery disease. Preoperative neurological examination revealed sequelae visual loss at right temporal visual field. Follow-up Magnetic Resonance Imaging studies showed a residual hypophyseal tumor tissue extending to suprasellar area. No additional pathology was detected in the early postoperative cranial control CT, but aggravation of visual field defect was determined. Coincidently, cranial magnetic resonance imaging (MRI) showed hemorrhage into the tumor tissue. We decided to follow-up the patient who exhibited no additional symptoms and was discharged well on the fifth day due to the signs of resolution of hemorrhage. Follow-up controls of the patient at sixth and twelfth months demonstrated normal hormone levels without any additional clinical complaints. We present preoperative assessment, perioperative anesthesia management, and postoperative clinical follow-up of a patient with a residual hypophyseal tumor.
Comparison of Histopathology of Transverse Carpal Ligament in Patients with Idiopathic Carpal Tunnel Syndrome and Hemodialysis Patients with Carpal Tunnel Syndrome  [PDF]
Erdinc Civelek, Tufan Cansever, Serdar Kabatas, Ebru Demiralay, Emre Demircay, Cem Comunoglu, Cem Yilmaz, Nur Alt?nors
Surgical Science (SS) , 2011, DOI: 10.4236/ss.2011.21003
Abstract: The aim of this paper is to point out the growing clinical importance of Carpal tunnel syndrome in patients on hemodialysis especially in aspect of the diagnosis, treatment and possible cause of the syndrome. Sixty patients with clinical diagnosis of Carpal Tunnel Syndrome was defined as the presence of two subjective symptoms (numbness, tingling in the median nerve distribution). The diagnosis was confirmed by electromyography. The patients with rheumatoid arthritis, thalasemia and thyroid dysfunction and the patients having pain due to arthritis or tenosynovitis were excluded. Fifty patients with clinical diagnosis of idiopathic CTS and seven hemodialysis patients having CTS were analyzed. Of 50 patients (47 female, 3 male) with clinical diagnosis of idiopathic CTS, 11 patients (22%) were involved bilaterally, 25 patients (50%) were affected only on the right and 14 patients (28%) were symptomatic only on the left. Of 7 hemodialysis patients (2 female, 5 male) with CTS, 1 patient (14%) was involved bilaterally (having two-sided A-V fistula), 4 patients (57%) were affected only on the right and 2 patients (28%) were symptomatic only on the left. There was significant correlation between the arteriovenous fistula and subsequent development of CTS. The all patients had fistulas in the affected side (5 of them were patent and 2 were occluded). In the relation between the duration of hemodialysis and development of CTS, 4 patients were over 10 years of hemodialysis, 2 patients were between 5 to 9 years and only 1 patient was below 4 years of duration. Amyloid deposit was demonstrated in 4 of 7 operated hands in the hemodialysis group. When we compared the presence of amyloid deposits in these groups, the difference between these two groups were found as statistically significant (p < 0.009). Although hemodialysis has no significant effect on development of fibrosis, the incidence of fibrosis was found as statistically significant in idiopathic carpal tunnel syndrome (p < 0.048). It is likely that there are numerous factors that may act either independently or in concert to potentiate the risk for developing CTS in patients on long-term hemodialysis.
Transforaminal epidural steroid injection via a preganglionic approach for lumbar spinal stenosis and lumbar discogenic pain with radiculopathy
Kabatas Serdar,Cansever Tufan,Yilmaz Cem,Kocyigit Ozgen
Neurology India , 2010,
Abstract: Background: Epidural steroid injection (ESIs) is one of the treatment modalities for chronic low back pain (CLBP) with various degrees of success. Aim: We analyzed the efficacy of fluoroscopically guided transforaminal epidural steroid injections (TFESIs) via a preganglionic approach in patients with foraminal stenosis due to lumbar spinal stenosis and lumbar discogenic pain with radiculopathy. Materials and Methods: We analyzed the data of 40 patients (February 2008 and April 2009) with the diagnosis of CLBP and treated by fluoroscopically guided TFESIs via a preganglionic approach. Patients were followed-up at one month (short term), six months (midterm) and one year (long term) after injections. Follow-up data collection included the Visual Numeric Pain Scale (VNS) and North American Spine Society (NASS) patient satisfaction scores. Results: The mean age of the patients was 59.87 ± 15.06 years (range 30 - 89 years, 25 women). Average follow-up period was 9.22 ± 3.56 months. Statistically significant differences were observed between the pre-procedure and post-procedure VNSs (P < 0.01, Pearson Correlation Test). Improvements in VNS scores were correlated with improvements in the NASS scores. When the VNS scores were evaluated with respect to the age of patient, level numbers, gender, pre-procedure symptom duration and pre-procedure VNS, no significant differences were found (P < 0.05, linear regression test). At short term evaluation in post treatment (one month), 77.78 % of patients were found to have a successful outcome and 22.22 % were deemed failures. Overall patient satisfaction was 67.23 % in the midterm period. Additionally, 54.83 % of patients (N/n: 15/8) had a successful long-term outcome at a follow-up of one year. Conclusion: Our data suggest that fluoroscopically guided TFESIs via a preganglionic approach, in patients with foraminal stenosis due to lumbar spinal stenosis and lumbar discogenic pain with radiculopathy, has effective outcome and patients responding to injection have significantly lower post-injection pain scores.
Biomechanical analysis of multilevel discectomy and excision of posterior longitudinal ligament: An in vitro study in sheep
Yilmaz Cem,Kabatas Serdar,Hepgul Kemal,Bozdag Ergun
Neurology India , 2009,
Abstract: Aim: This experimental biomechanical study was performed to determine the effects of multilevel anterior cervical discectomy and excision of posterior longitudinal ligament (PLL) to stabilize the cervical spine using an in vitro animal model. Materials and Methods: Fifty fresh cadaveric C3-C6 sheep spine specimens were divided into five experimental groups: Group A was the control group; Group B, one-level discectomy; Group C, two- level discectomy, Group D, three-level discectomy, and Group E, three-level discectomy and excision of PLL, respectively. The specimens were subjected to non-destructive loads cycled from zero to five Newton-meter for flexion, extension, right and left lateral bending, and axial rotation on an electrohydraulic test machine. Load displacement curves were obtained via collected data using strain gauges. The values were obtained for all five groups, statistical differences were determined respectively (P < 0.05, ANOVA). Results: One- level discectomy was less stable than the control group, two-level discectomy was less stable than one-level discectomy and three-level discectomy was less stable than two-level discectomy, respectively (P < 0.05). Excision of PLL did not seem to affect stability (P > 0.05). Conclusion: Our data suggested that cervical discectomy decreases stability of sheep spine pieces.
Microvascular decompression as a surgical management for trigeminal neuralgia: A critical review of the literature
Kabatas Serdar,Albayrak S,Cansever Tufan,Hepgul Kemal
Neurology India , 2009,
Abstract: Trigeminal neuralgia (TN) is a common pain syndrome and is characterized by recurrent episodes of intense lancinating pain in one or more divisions of the trigeminal nerve. Neurovascular compression (NVC) has been considered as the main cause of TN in the root entry zone (REZ) of the trigeminal nerve in the cerebellopontine angle cistern. Microvascular decompression (MVD) is the surgical procedure of choice for the treatment of medically refractory TN. MVD has also been shown to provide pain relief even in patients without visible neurovascular compression. Additionally, it has been accepted that MVD can provide the highest rate of long-term patient satisfaction with the lowest rate of pain recurrence. We did, systematic review of the subject and also our own experiences.
An anatomical variation of the third common digital nerve and recurrent motor branch of the median nerve
Demircay Emre,Kabatas Serdar,Cansever Tufan,Yilmaz Cem
Neurology India , 2009,
Abstract: Carpal tunnel syndrome (CTS) is an entrapment neuropathy where the median nerve is compressed in the carpal canal. There are many variations of the distal branches of the median nerve at the wrist. Anatomical variations of this nerve have fundamental clinical importance to prevent injuries, especially during limited open or endoscopic surgical procedures. A case is presented of an anomalous course of the recurrent motor branch of the median nerve and high division of the third common digital nerve seen in a limited open carpal tunnel release.
Spontaneous supratentorial intracerebral hemorrhage: Does surgery benefit comatose patients?
Yilmaz Cem,Kabatas Serdar,Gulsen Salih,Cansever Tufan
Annals of Indian Academy of Neurology , 2010,
Abstract: Introduction: Treatment of spontaneous supratentorial intracerebral hemorrhage (SICH) is still controversial. We therefore analyzed the comatose patients diagnosed as having spontaneous SICH and treated by surgery. Materials and Methods: We retrospectively analyzed the collected data of 25 comatose patients with initial Glasgow Coma Scale (GCS) ≤ 8 diagnosed as having spontaneous SICH and they had been treated by surgical evacuation between 1996 and 2008. The outcome was assessed using Glasgow outcome scale (GOS). The side and location of the hematoma and ventricular extension of the hematoma were recorded. The hematoma volume was graded as mild (<30 cc), moderate (30-60 cc) and massive (>60 cc). Results: Age of the patients ranged from 25 to 78 years (mean: 59.6 ± 15.14 years). Among the 25 patients studied, 11 (44%) were females and 14 (56%) were males. GCS before surgery was <5 in 8 (32%) patients and between 5 and 8 in 17 (68%) patients. The hematoma volume was less than 30 cc in 2 patients, between 30 and 60 cc in 9 patients and more than 60 cc in 14 patients. Fourteen of the patients had no ventricular connection and 11 of the hematomas were connected to ventricle. All the 25 patients were treated with craniotomy and evacuation of the hematoma was done within an average of 2 hours on admission to the emergency department. Postoperatively, no rebleeding occurred in our patients. The most important complication was infection in 14 of the patients. The mortality of our surgical series was 56%. GCS before surgery was one of the strongest factors affecting outcome GCS (oGCS) (P = 0.017). Income GCS (iGCS), however, did not affect GOS (P = 0.64). The volume of the hematoma also affected the outcome (P = 0.037). Ventricular extension of the hematoma did affect the oGCS and GOS (P = 0.002), but not the iGCS of the patients (P = 0.139). Conclusion: Our data suggest that being surgically oriented is very important to achieve successful outcomes in a select group of patients with SICH.
Cerebellar mutism syndrome and its relation to cerebellar cognitive and affective function: Review of the literature
Yildiz Ozlem,Kabatas Serdar,Yilmaz Cem,Altinors Nur
Annals of Indian Academy of Neurology , 2010,
Abstract: Tumors of the cerebellum and brainstem account for half of all brain tumors in children. The realization that cerebellar lesions produce clinically relevant intellectual disability makes it important to determine whether neuropsychological abnormalities occur in long-term survivors of pediatric cerebellar tumors. Little is known about the neurobehavioral sequale resulting specifically from the resection of these tumors in this population. We therefore reviewed neuropsychological findings associated with postoperative cerebellar mutism syndrome and discuss the further implications for cerebellar cognitive function.
A Fundamental Relationship of Polynomials and Its Proof  [PDF]
Serdar Beji
Advances in Pure Mathematics (APM) , 2018, DOI: 10.4236/apm.2018.86033
Abstract: A fundamental algebraic relationship for a general polynomial of degree n is given and proven by mathematical induction. The stated relationship is based on the well-known property of polynomials that the nth-differences of the subsequent values of an nth-order polynomial are constant.
On the Kinetic Energy of the Projection Curve for the 1-Parameter Closed Spatial Homothetic Motion  [PDF]
Serdar Soylu, Ayhan Tutar
Journal of Applied Mathematics and Physics (JAMP) , 2017, DOI: 10.4236/jamp.2017.510167
Abstract: In this study, the kinetic energy formula of the projection curve under 1-parameter closed homothetic motion is expressed and as a result, theorem is given. Also some special cases are given related with that formula.
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