35 research outputs found
The effect of the American Society of Anesthesiology classification scores on complications associated with percutaneous nephrolithotomy
Objectives: We aimed to evaluate the effect of American Society of Anesthesiology (ASA) classification scoring and age on complications and surgical outcomes during and after percutaneous nephrolithotomy (PCNL) operation.
Material and methods: The records of 263 patients, above the age of 18 years, that underwent PCNL surgery between October 2014 and May 2017 were evaluated retrospectively. The patients were divided into three groups based on their ASA risk scores (ASA 1, 2, 3) and into two groups based on their age (younger and older than 65 years). Postoperative complications were assessed according to the ASA groups and age and according to the Clavien classification system.
Results: The number of patients in the ASA 1, 2, and 3 groups were 97 (36.8%), 131 (49.8%) and 35 (13.3%), respectively. Four patients in ASA4 were not included in the study. There was no significant difference in ASA 1, 2, 3 groups in terms of changes in Hgb values, mean duration of operation, and mean hospital stay. When ASA1 was compared to ASA3 and ASA2 was compared to ASA3, there was no significant difference in the incidence of all complication rates. There were 159 (60.4%) patients in the young group and 104 (39.5%) patients in the elderly group. Postoperative PCNL complications of these 2 groups were compared according to Clavien classification system and no significant difference was found in incidence of complications.
Conclusions: We believe that PCNL operation can be performed effectively and safely in both ASA3 patients and patients above the age of 65 years
A Fast Method to Determine the Critical Depth of Cut for Various Rock Types
Knowing correct values of the rock mechanical properties is crucial for many engineering applications in subsurface. Rocks may show two failure modes during cutting: ductile and brittle. In the ductile mode, rock deforms plastically, and the debris is powdered ahead of the cutting face. On the other hand, chips are the major cutting characteristics for the brittle failure during rock cutting. The critical depth of cut represents the transition point between these two models, so knowing this value helps better predict the failure mechanism of rock. In this paper, a new method is introduced based on measuring the roughness of the groove for determining the transition point of failure modes for every rock sample after the scratch test. The graph depicting the average change in the surface roughness (Rt) versus the scratched surface roughness (ΔR) can be used to identify the rock failure mode and determine the transition point for the cutting process. The value of this slope increases until the depth of cut reaches the transition point, and then the slope reaches a constant value. The main purpose of this paper is to estimate the critical depth of cut of different rock specimens employing the new surface roughness model
Greenhouse Detection from Color Infrared Aerial Image and Digital Surface Model
Greenhouse detection is important with respect to urban and rural planning, yield estimation and crop planning, sustainable development, natural resource management, and risk analysis and damage assessment. The aim of this study is to detect greenhouse areas by using color and infrared orthophoto (RGB-NIR), topographic map, and Digital Surface Model (DSM) approaches. The study was implemented in the Kumluca district of Antalya, Turkey, which includes intensive greenhouse areas. In this study, color and infrared orthophotos, a normalized Digital Surface Model (nDSM), Normalized Difference Vegetation Index (NDVI), and Visible Red-Based Built-Up Index (VrNIR-BI) were used, and the greenhouse areas were detected using an Object-Based Image Analysis (OBIA). In this process, the optimum scale parameter was determined automatically by the Estimation of Scale Parameter2 (ESP2) tool and Multi Resolution Segmentation (MRS) was used as the segmentation algorithm. In the classification stage, K-Nearest Neighbor (K-NN), Random Forest (RF), and Support Vector Machine (SVM) classification techniques were used, and the accuracies of the classification results were compared. The obtained results demonstrated that greenhouse areas can be determined from color and infrared orthophoto and DSM data successfully by using the OBIA. The highest overall accuracy was obtained when the SVM classifier was used, with 94.80%
THE USAGE OF AUXINS WITH VARIOUS CULTURAL TECHNIQUES TO INCREASE FRUIT SIZE IN STAR RUBY GRAPEFRUIT
WOS: 000413499500004Fruit size is a key parameter for quality and increases the profitability for export markets in citrus production in Turkey. Fruit size can be enhanced by several techniques such as girdling and thinning. Various plant growth regulators are known to affect the growth and size of citrus fruit. Thus the effects of synthetic auxin applications (2,4-DP and 3,5,6-TPA) at different physiological periods, girdling practices, pruning practices, foliar application of potassium and various combinations of these practices on the fruit size and yield, fruit retention rate, and leaf chlorophyll concentration and fluorescence of Star Ruby grapefruit cultivar were investigated. As a result of pomological observations, treatments had different effects on fruit size and yield. The highest yield per tree were determined in Maxim (3,5,6-TPA) and Citrimax (2,4-DP) (605.33 and 601.83 kg/tree) treatments. The highest fruit diameter was determined from foliar spray of K (83.25 mm) on leafs whereas the lowest was obtained from control samples with 78.96 mm. The highest leaf chlorophyll concentration was determined in the leaf treated with foliar spray of K.Cukurova University, Scientific Research Projects Coordinating OfficeCukurova University [CU-BAP-ZF2011YL12]Special thanks are due to the Cukurova University, Scientific Research Projects Coordinating Office (project CU-BAP-ZF2011YL12) for supporting the present study
Reconstruction And Implant-Supported Rehabilitation Of An Iatrogenically Caused Maxillary Alveolar Defect
Defects of the oral and maxillofacial region may arise from several reasons such as trauma, infection, cyst, tumor, medication related osteonecrosis of the jaw, and misuse of some irritant agents. For reconstruction, autogenous grafts remain the gold standard among the alternatives. In our case, a 42-year-old woman referred to our clinic for implant-supported fixed bridge rehabilitation of her edentulous and defected left 2nd premolar and 1st molar region. In examinations, devitalizing agent-dependent large defect was observed. Anterior iliac crest (AIC) grafting technique was preferred for reconstruction. Consecutively, 16-week bone healing and 3-month implant osseointegration periods were uneventful. After fabrication of the implant-supported fixed bridge, the patient was followed up for 2.5 years with no signs of bone resorption, gingival inflammation, and pain. AIC grafting and implant-borne fixed bridges seem stable and satisfactory methods for large maxillofacial defects.WoSScopu
Identification of the metal residues on the death related to the high voltage Spark Region by SEM-EDS
High voltage electric energy wires, transformers and the devices which run with this kind of electricity may cause serious damages and death for humans and other living organisms. It was the aim to prove with forensic medicine the presence of conductive evaporated metal particles, existing on the arc-burnt of the corpse with the scanning electron microscope energy-dispersive spectroscopy (SEM-EDS). It was reported that somebody who entered the transformer building in Istanbul without any permission died of an arc which was formed by the high voltage there. The autopsy was done in the Morgue Department of Council of Forensic Medicine, Ministry of Justice. In the autopsy, some samples were collected by double-sided adhesive coated stubs from the surface of the skin lesions which were the result of the high voltage arc by stub. The removed samples were examined by SEM-EDS technique. The results were evaluated to determine the origin of death. It was concluded that the SEM-EDS data from the area of metallic particles which originated from the evaporating conductor contaminate the skin. The arc-bums related to the high voltage are important with other close examinations to clarify the cause of the death and the mechanism
Case report. Candida lusitaniae peritonitis in a patient on continuous ambulatory peritoneal dialysis
We report a case of Candida lusitania peritonitis in continuous ambulatory peritoneal dialysis. Since fluconazole therapy was not successful in this patient, the peritoneal catheter was removed and antifungal therapy continued, and the patient was then converted to haemodialysis. This treatment protocol was successful. We suggest that early peritoneal catheter removal should be considered in such cases
Prenatal Diagnosis of an Autosomal Translocation with Regular Trisomy 21
The coincidence of trisomy 21 and a structural rearrangement is very rare, and even it has not been reported as a prenatal diagnosis yet. In this article, we present an autosomal translocation carrier fetus with trisomy 21: 47,XX,+21, t(3;8)(p21;q24). Although the coincidence of reciprocal translocation and trisomy may be seen in reciprocal translocation carrier families, de novo cases are extremely rare. The presented case is diagnosed by amniocentesis, which was performed because of abnormal fetal ultrasonographic findings and increased trisomy 21 risk at maternal serum screening test. The postmortem pathologic examination of the fetus revealed that the findings of hypertelorism and right lung with two lobes are interesting novel findings of our cases associated with the breakpoints 3p21 and 8q24
Protective effect of adrenomedullin on contrast induced nephropathy in rats (conferenceObject)
50th European-Renal-Association - European-Dialysis-and-Transplant-Association Congress -- MAY 18-21, 2013 -- Istanbul, TURKEYWOS: 000319498200280…European Renal Assoc (ERA), European Dialysis & Transplant Assoc (EDTA
Protective effect of adrenomedullin on contrast induced nephropathy in rats
WOS: 000345564400006PubMed: 25335086Background and aims: Contrast-induced nephropathy (CIN) has a growing incidence in which renal vasoconstriction and medullary hypoxia are important mechanisms. Therapeutic approaches are very restricted and there is a considerable interest in advancing preventive strategies. Adrenomedullin is a relatively novel peptide having antioxidant, vasoactive and vasodilatory properties. We aimed to investigate whether adrenomedullin might have a preventive role against the development of experimental CIN. Methods: Wistar albino rats (n=24) were allocated randomly into four equal groups of 6 each; Control (C), Adrenomedullin (A), Contrast Media (CM) and Adrenomedullin plus Contrast Media (ACM). All rats were deprived of water from day 1 to day 4 during 72 hours. Then, intravenous administrations of chemicals were performed. Adrenomedullin was given at dose of 12 mu g/kg to groups A and ACM. A single dose of high-osmolar contrast media; diatrizoate (Urografin 76%, Schering AG, Germany) was injected to groups CM and ACM at dose of 10mL/kg. On day 1 and 6 blood samples were drawn for renal function tests and inflammatory markers including TNF-alpha IL-1 beta, IL-6 and IL-18. After sacrification, kidney histologies were examined with hematoxylineosin staining. Results: Compared to CM group, serum cystatin-C levels on 6th day were found significantly lower in ACM group (p<0.05). Additionally, daily protein excretion rates, absolute changes in daily urine output and creatinine clearance values were significantly lower in ACM group than those in CM group (p<0.05). In histopathological evaluation, regarding the degree of tubular damage and medullary congestion scores, ACM group had slightly better scores compared to CM group; however the differences did not reach significance as shown in inflammatory markers. Conclusion: This study demonstrated a beneficial impact of adrenomedullin on deteriorated renal function tests in an experimental CIN model. Adrenomedullin might be a candidate agent for prophylaxis of CIN. However, further studies are needed to shed more light on this issue