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Current breakthroughs in urea biosensors with regard to biomedical applications.
Objective  In the present study, we present the results with at least 10 years of follow-up of the cervical disc prosthesis implanted in a single level. Methods  Retrospective study of patients undergoing single-level total cervical disc replacement (TCDR). Clinical results included the neck disability index (NDI) and the visual analogue scale (VAS) in the preoperative period, one year postoperatively, and a minimum of 10 years of follow-up. The radiographic parameters included cervical mobility, segmental lordosis, C2-C7 angle, heterotopic ossification (HO), facet and joint degeneration (FJD) and adjacent segment disease (ASD). Results  We identified 22 patients, 16 women and 6 men with mean age of 39.7 years old (26-51 years old), of which fifteen completed a minimum follow-up of 10 years. Sotrastaurin purchase There was a statistically significant improvement of NDI and VAS ( p   10 years). At the end of 10 years, HO was observed in 59% of the cases. The mobility of the implant was preserved in 80% of the patients. Radiological evidence of ASD was recorded in 6 patients (40%). There was no correlation between the clinical parameters evaluated and the presence of ASD or the different classes of HO. Conclusion  Clinical improvement in all evaluated parameters, which persists over time. Most implants maintained mobility, as has already been demonstrated in other studies with shorter follow-ups. In a significant percentage of cases, ASD was observed, questioning the concept of motion preserving technology. However, we did not have any surgical intervention for this reason, since there was no correlation with worse clinical results.Objective  The aim of the present study is to identify the incidence, predisposing factors and prognostic impact of blood loss in patients with neuromuscular scoliosis submitted to corrective surgery. Methods  Retrospective cohort study, including pediatric patients diagnosed with neuromuscular scoliosis undergoing instrumentation and posterior vertebral fusion in a university hospital. Patient characteristics were collected from the hospital information system. Results  A total of 39 patients were included in the study. The intraoperative blood losses were 962 ml, representing a loss of 35.63% of the blood volume. In 20 cases, there was a massive blood loss (> 30%) and only 7 patients did not need a transfusion. The group of patients with massive blood loss had a slightly higher age (13.75 versus 13.53 years old), a lower body mass index (BMI) percentile (25 versus 50), and for each decrease of 0.38 in the BMI, intraoperative blood losses increased 1% ( p  less then  0.05). The value of preoperative albumin had influence on the percentage of blood loss, and for each decrease of 0.4 of albumin, blood loss increased 1% ( p  less then  0.05). Conclusions  The factors that most contributed to the differences in blood loss were age, BMI, and preoperative albumin value. There was no significant association between Cobb angle, number of fusion levels and duration of surgery. We can conclude that these patients would benefit from preoperative nutritional control.Objective  To perform the translation and cross-cultural adaptation to Brazilian Portuguese of the Non-Communicating Children's Pain Checklist - Postoperative Version (NCCPC-PV) instrument, which assesses acute pain in individuals with severe intellectual disability (ID) who present great cognitive impairment and inability to communicate (CIIC). Method  In the adaptation process, the original NCCPC-PV was translated, back-translated, its versions were discussed by a committee of experts, and the resulting tool was tested in 20 health professionals and 20 caregivers of CCIC patients regarding its semantic clarity. Results  Data from the present study and its participants were analyzed and their results were described. Thus, "Lista de Verificação de Dor em Crianças Não Comunicantes - Versão Pós-operatória" (Br-NCCPC-PV) was obtained as the final version in Brazilian Portuguese. Conclusion  After the present study, the Br-NCCPC-PV was considered adequate for use in the Brazilian population.Objective  To elaborate a protocol for the harvest, transport, and preservation of human osteochondral tissue for use in tissue banks (TBs). Methods  Osteochondral fragments measuring 2 cm 3 of 5 corpse donors aged between 15 and 45 years old were analyzed. The samples were stored in cell preservation medium containing human albumin, Iscove's and vancomycin preserved at 4°C. The concentration of proteoglycans in the extracellular medium was quantified by the use of Safranin-O, while tissue structural analysis was assessed by histological study with hematoxylin-eosin stained slides. The images obtained were analyzed according to the histological scores of Mankin and the score proposed by the OsteoArthritis Research Society International. The samples were analyzed with 0, 15, 30 and 45 days of preservation. Results  The osteochondral fragments studied showed a progressive decrease in proteoglycan concentration with increased preservation time. After 30 days of preservation, structural changes were identified with discontinuity of the cartilage surface layer. According to the results obtained by the Mankin score, there was a statistically significant difference between 15 and 30 days of tissue preservation. Conclusion  The protocol described defined knee transport immersed in Lactated Ringer at a controlled temperature of 10° C until its arrival at the TB. After processing, the preservation solution was composed of Iscove's serum-free cell culture medium supplemented with 10% human albumin and 100 μg/ml vancomycin. The tissue was preserved at a temperature of 4°C until the moment of transplantation characterizing the fresh preservation.Objective  To compare antisepsis techniques using chlorhexidine-based soap associated with ethyl alcohol and alcohol-based chlorhexidine or chlorhexidine-based soap associated with alcohol-based chlorhexidine alone in surgical orthopedic procedures. Methods  This is a primary, randomized, analytical and single-center clinical trial consisting of 170 patients, who were divided into 2 groups. The combinations chlorhexidine-based soap + alcohol-based chlorhexidine (CSAC) and chlorhexidine-based soap + 70% ethyl alcohol + alcohol-based chlorhexidine (CSAAC) were tested in each group. The cultures were grown in mannitol and eosin methylene blue (EMB) after collection before skin preparation (time point 0), after skin preparation (time point 1) and at the end of the surgical procedure (time point 2). Results  There was no statistically significant difference regarding bacterial growth in mannitol and EMB between the groups at any time point. Moreover, there was no statistical difference between groups and time points regarding the type of bacterial growth in culture media.
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