Base de dados : LILACS
Pesquisa : E05.320 [Categoria DeCS]
Referências encontradas : 384 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 39 ir para página                         

  1 / 384 LILACS  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: lil-792450
Autor: Pereira, Bruno Emmanuel de Medeiros; Sousa, Alana Tamar Oliveira de; França, Jael Rúbia Figueiredo de Sá; Soares, Maria Júlia Guimarães Oliveira.
Título: Cost comparison of three kinds of compression therapy in venous ulcer
Fonte: An. bras. dermatol;91(4):544-546, July-Aug. 2016. graf.
Idioma: en.
Resumo: Abstract: Evolution and cost of three types of compression therapy (single layer, multilayer and Unna boot) in patients with venous ulceration were compared. The evaluation lasted two months and used photographic records and instrument based on pressure ulcer scale for healing (PUSH). Treatment with monolayer compression therapy presented the lowest cost and more efficacy of the three types, with 82% savings compared with the multilayer therapy.
Descritores: Úlcera Varicosa/economia
Úlcera Varicosa/terapia
Bandagens Compressivas/economia
-Reprodutibilidade dos Testes
Resultado do Tratamento
Desenho de Equipamento
Limites: Seres Humanos
Masculino
Feminino
Meia-Idade
Tipo de Publ: Relatos de Casos
Estudo Comparativo
Responsável: BR1.1 - BIREME


  2 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: lil-745809
Autor: Silva, Soraia M; Corrêa, Fernanda I; Silva, Paula F. C; Silva, Daniela F. T; Lucareli, Paulo R. G; Corrêa, João C. F.
Título: Validation and reliability of a modified sphygmomanometer for the assessment of handgrip strength in Parkinson´s disease
Fonte: Braz. j. phys. ther. (Impr.) = Rev. bras. fisioter;19(2):137-145, 27/04/2015. tab, graf.
Idioma: en.
Resumo: BACKGROUND: Handgrip strength is currently considered a predictor of overall muscle strength and functional capacity. Therefore, it is important to find reliable and affordable instruments for this analysis, such as the modified sphygmomanometer test (MST). OBJECTIVES: To assess the concurrent criterion validity of the MST, to compare the MST with the Jamar dynamometer, and to analyze the reproducibility (i.e. reliability and agreement) of the MST in individuals with Parkinson's disease (PD). METHOD: The authors recruited 50 subjects, 24 with PD (65.5±6.2 years of age) and 26 healthy elderly subjects (63.4±7.2 years of age). The handgrip strength was measured using the Jamar dynamometer and modified sphygmomanometer. The concurrent criterion validity was analyzed using Pearson's correlation coefficient and a simple linear regression test. The reproducibility of the MST was evaluated with the coefficient of intra-class correlation (ICC2,1), the standard error of measurement (SEM), the minimal detectable change (MDC), and the Bland-Altman plot. For all of the analyses, α≤0.05 was considered a risk. RESULTS: There was a significant correlation of moderate magnitude (r≥0.45) between the MST and the Jamar dynamometer. The MST had excellent reliability (ICC2,1≥0.7). The SEM and the MDC were adequate; however, the Bland-Altman plot indicated an unsatisfactory interrater agreement. CONCLUSIONS: The MST exhibited adequate validity and excellent reliability and is, therefore, suitable for monitoring the handgrip strength in PD. However, if the goal is to compare the measurements between examiners, the authors recommend that the data be interpreted with caution. .
Descritores: Doença de Parkinson/fisiopatologia
Força da Mão
Esfigmomanômetros
-Reprodutibilidade dos Testes
Desenho de Equipamento
Limites: Seres Humanos
Masculino
Feminino
Meia-Idade
Idoso
Responsável: BR1.1 - BIREME


  3 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
Texto completo
Id: biblio-950006
Autor: Gollu, Gulnur; Bermede, A. Onat; Khanmammadov, Farid; Ates, Ufuk; Genc, Sinan; Selvi Can, Ozlem; Fitoz, Suat; Alanoglu, Zekeriyya; Yagmurlu, Aydin.
Título: Uso de la ecografía como una herramienta no invasiva decisiva para determinar el tamaño preciso del tubo endotraqueal en niños anestesiados / Use of ultrasonography as a noninvasive decisive tool to determine the accurate endotracheal tube size in anesthetized children
Fonte: Arch. argent. pediatr;116(3):172-178, jun. 2018. ilus, tab, graf.
Idioma: en; es.
Resumo: Introducción. Es difícil determinar el tamaño adecuado y la posición traqueal correcta del tubo endotraqueal (TET) en los niños. El objetivo de este estudio fue determinar el diámetro traqueal en los niños mediante el uso de la técnica ecográfica como herramienta objetiva y compararlo con fórmulas de uso frecuente basadas en la edad para calcular el tamaño del TET. Pacientes y métodos. Se inscribió de forma prospectiva a pacientes a los que se les iba a practicar una cirugía programada en un hospital pediátrico de alta complejidad. Se determinó el diámetro traqueal transversal infraglótico mediante ecografía. Un anestesista, que no podía ver el examen ecográfico, determinó el tamaño del tubo y realizó la intubación evaluando el espacio entre las cuerdas vocales con la ayuda de la vista directa de un laringoscopio. Se registraron los diámetros traqueales medidos con las ecografías, los diámetros de los tubos, los controles de presión/pérdida de aire y los resultados de los cálculos del tamaño de los tubos basados en la edad. Resultados. Se inscribieron en total 61 pacientes con una media de edad de 12 ± 4,21 (2-17) y un peso medio de 38 ± 22,94 (10-106). El diámetro de la tráquea en la medición ecográfica fue de 13.0 (11,4-15,1). El diámetro externo del TET determinado por el anestesista fue de 8,42 ± 1,43, el calculado por la fórmula de Cole fue de 9.0 ± 1,42, el calculado por la fórmula de Khine fue de 7,67 ± 1,46 y el calculado por la fórmula de Motoyama fue de 8,33 ± 1,42. En 31 (47,7%) pacientes, se insufló el manguito después de la colocación del TET debido a la pérdida de aire. El tubo tuvo que reemplazarse por uno más grande a causa de la pérdida excesiva de aire en un paciente. Se halló una correlación intraclase deficiente entre los cálculos del diámetro traqueal determinado por ecografía y los cálculos del diámetro del tubo basado en la edad (diámetro traqueal frente a Cole -amp;#91;0,273-amp;#93;, Khine -amp;#91;0,207-amp;#93; y Motoyama -amp;#91;0,230-amp;#93;). Conclusión. La medición ecográfica del diámetro traqueal transversal es un método adecuado para determinar el tamaño correcto del tubo endotraqueal en comparación con las fórmulas basadas en la edad.

Background. It is hard to determine the appropriate size and correct tracheal position of endotracheal tube (ETT) in children. The aim of this study is to determine tracheal diameter in children by using ultrasonography technique as objective tool and compare it with commonly used aged based formulas for the ETT size estimation. Patients and methods. Patients undergoing elective surgery in a tertiary children's hospital were prospectively enrolled. The subglottic transverse tracheal diameter was determined by ultrasonography. An anesthesiologist who was blind to ultrasonographic examination, determined the tube size and performed intubation by evaluating the space between vocal cords with the help of a direct laryngoscopic view. Ultrasonographically measured tracheal diameter, tube diameters, leak/pressure controls, and results of age-based tube size calculations were recorded. Results. A total of 61 patients, mean age of 12 ± 4.21 (217) years and mean weight of 38 ± 22.94 (10-106) kg were enrolled. The diameter of trachea measured by ultsonography was 13.0 (11.4-15.1). Outer diameter (mm) of the ETT determined by anesthesiologist was 8.42 ± 1.43; calculated by Cole formula was 9.0 ± 1,42; calculated by Khine formula was 7.67 ± 1.46; calculated by Motoyama formula was 8.33 ± 1.42. ETT cuff was inflated after ETT placement due to leak in 31 (47.7%) patients. Tube was replaced by a larger tube due to excessive leak in one patient. Poor intraclass correlation was found between ultrasonographically determined tracheal diameter and aged based tube diameter calculations (tracheal diameter vs Cole -amp;#91;0.273-amp;#93;, Khine -amp;#91;0.207-amp;#93;, and Motoyama -amp;#91;0.230-amp;#93;). Conclusion. Ultrasonographical determination of transverse tracheal diameter is a suitable method for determining the correct endotracheal tube size when compared with the age based formulas.
Descritores: Traqueia/diagnóstico por imagem
Ultrassonografia/métodos
Intubação Intratraqueal/métodos
Laringoscopia/métodos
-Estudos Prospectivos
Fatores Etários
Desenho de Equipamento
Centros de Atenção Terciária
Hospitais Pediátricos
Intubação Intratraqueal/instrumentação
Anestesia/métodos
Limites: Seres Humanos
Masculino
Feminino
Pré-Escolar
Criança
Adolescente
Tipo de Publ: Estudo Comparativo
Responsável: AR94.1 - Centro de Información Pediatrica


  4 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Rocha, José Joaquim Ribeiro da
Texto completo
Id: lil-779762
Autor: Rocha, José Joaquim Ribeiro da; Feitosa, Marley Ribeiro; Stoianov, Thiago Rodrigues da Cunha; Perazzoli, Camila; Machado, Vanessa Foresto; Bernardes, Mário Vinícius Angelete Alvarez; Parra, Rogério Serafim; Féres, Omar.
Título: A novel subcutaneous T-shaped bridge device for loop colostomies
Fonte: Acta cir. bras;31(supl.1):5-7, 2016. graf.
Idioma: en.
Resumo: PURPOSE: To describe a novel securing device for loop colostomies, developed in our institution and report our 10-year experience. METHODS: The T-shaped support device was used in all patients who required loop colostomy and who were at an increased risk of stoma withdrawal. The device was removed on the fifth postoperative day in all patients. An analysis from a prospective database regarding early postoperative complication, from 209 patients, was conducted between 2003 and 2013. RESULTS: Bleeding, peristomal skin problems, surgical site infection, stomal ischemia/necrosis, stenosis, obstruction, retraction and early withdrawal of the stoma were not noted in all cases. Thirteen patients (6%) reported mild discomfort on the site of the skin suture. Removal of the instrument was fast and easy, with the advantage of keeping the colostomy bag. CONCLUSION: The T-shaped bridge device successfully prevented stoma withdrawal in all subjects. The device was safe and well accepted, with minor complications.
Descritores: Colostomia/instrumentação
Colostomia/métodos
Desenho de Equipamento
Estomas Cirúrgicos
-Complicações Pós-Operatórias
Fatores de Tempo
Reprodutibilidade dos Testes
Resultado do Tratamento
Limites: Seres Humanos
Masculino
Feminino
Adulto
Meia-Idade
Idoso
Idoso de 80 Anos ou mais
Adulto Jovem
Responsável: BR1.1 - BIREME


  5 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-837706
Autor: Dantas, Milla Gabriela Belarmino; Damasceno, Camila Mahara Dias; Barros, Vanessa Raquel Pinto de; Menezes, Eveline Soares; Fontoura, Humberto de Sousa; Lima, Ricardo Santana de; Carvalho, Ferdinando Oliveira; Almeida, Jackson Roberto Guedes da Silva.
Título: Creation of a contusion injury method for skeletal muscle in rats with differing impacts
Fonte: Acta cir. bras;32(5):369-375, May 2017. tab, graf.
Idioma: en.
Resumo: Abstract Purpose: To realize a morphological examination of the musculoskeletal tissue, assessing the effect of a contusion method for the production in rat gastrocnemius, comparing the inflammatory responses generated by different impacts. Methods: For the analysis of a contusion method, twelve female Wistar rats were distributed into four groups. The lesion was generated by 324 g of mass that was dropped from different predetermined heights for each group (30, 45, 60 and 70 cm). Results: In the analysis of musculoskeletal tissue, the response to injury varied according to the mass of the height drop onto the muscle. Only the group that was injured from 70 cm responded with uniform and severe inflammation, whereas the groups 30, 45 and 60 cm showed inflammation in some regions of the tissue with mild and moderate infiltrates. Conclusion: The method with the 324-gram mass dropped from a 70-cm height onto the gastrocnemius muscle of rats seems to be the most suitable for the production of muscle injury in these animals after 72 hours, showing an important inflammatory infiltrate.
Descritores: Músculo Esquelético/lesões
Contusões/patologia
Modelos Animais de Doenças
-Ratos Wistar
Músculo Esquelético/patologia
Contusões/etiologia
Desenho de Equipamento/instrumentação
Desenho de Equipamento/métodos
Inflamação/patologia
Limites: Animais
Feminino
Responsável: BR1.1 - BIREME


  6 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: lil-782834
Autor: Lu, Zhenhai; Peng, Jianhong; Li, Cong; Wang, Fulong; Jiang, Wu; Fan, Wenhua; Lin, Junzhong; Wu, Xiaojun; Wan, Desen; Pan, Zhizhong.
Título: Efficacy and safety of a NiTi CAR 27 compression ring for end-to-end anastomosis compared with conventional staplers: A real-world analysis in Chinese colorectal cancer patients
Fonte: Clinics;71(5):264-270, May 2016. tab, graf.
Idioma: en.
Projeto: Science and Technology Planning Project of Guangdong Province.
Resumo: OBJECTIVES: This study aimed to evaluate the safety and efficacy of a new nickel-titanium shape memory alloy compression anastomosis ring, NiTi CAR 27, in constructing an anastomosis for colorectal cancer resection compared with conventional staples. METHODS: In total, 234 consecutive patients diagnosed with colorectal cancer receiving sigmoidectomy and anterior resection for end-to-end anastomosis from May 2010 to June 2012 were retrospectively analyzed. The postoperative clinical parameters, postoperative complications and 3-year overall survival in 77 patients using a NiTi CAR 27 compression ring (CAR group) and 157 patients with conventional circular staplers (STA group) were compared. RESULTS: There were no statistically significant differences between the patients in the two groups in terms of general demographics and tumor features. A clinically apparent anastomotic leak occurred in 2 patients (2.6%) in the CAR group and in 5 patients (3.2%) in the STA group (p=0.804). These eight patients received a temporary diverting ileostomy. One patient (1.3%) in the CAR group was diagnosed with anastomotic stricture through an electronic colonoscopy after 3 months postoperatively. The incidence of postoperative intestinal obstruction was comparable between the two groups (p=0.192). With a median follow-up duration of 39.6 months, the 3-year overall survival rate was 83.1% in the CAR group and 89.0% in the STA group (p=0.152). CONCLUSIONS: NiTi CAR 27 is safe and effective for colorectal end-to-end anastomosis. Its use is equivalent to that of the conventional circular staplers. This study suggests that NiTi CAR 27 may be a beneficial alternative in colorectal anastomosis in Chinese colorectal cancer patients.
Descritores: Colo Sigmoide/cirurgia
Anastomose Cirúrgica/instrumentação
Neoplasias Colorretais/cirurgia
-Período Pós-Operatório
Grampeadores Cirúrgicos/efeitos adversos
Anastomose Cirúrgica/efeitos adversos
Anastomose Cirúrgica/métodos
Estudos Retrospectivos
Resultado do Tratamento
Desenho de Equipamento
Segurança de Equipamentos/instrumentação
Ligas
Fístula Anastomótica/etiologia
Limites: Seres Humanos
Masculino
Feminino
Adulto
Meia-Idade
Idoso
Idoso de 80 Anos ou mais
Adulto Jovem
Responsável: BR1.1 - BIREME


  7 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-893648
Autor: Vasconcelos, Layla Reginna Silva Munhoz de; Midena, Raquel Zanin; Minotti, Paloma Gagliardi; Pereira, Thais Cristina; Duarte, Marco Antonio Hungaro; Andrade, Flaviana Bombarda de.
Título: Effect of ultrasound streaming on the disinfection of flattened root canals prepared by rotary and reciprocating systems
Fonte: J. appl. oral sci;25(5):477-482, Sept.-Oct. 2017. tab, graf.
Idioma: en.
Projeto: FAPESP - São Paulo Research Foundation.
Resumo: Abstract New technical and scientific developments have been advocated to promote the success of the endodontic treatment. In addition to rotary and reciprocating systems, irrigating solution agitation has been suggested and passive ultrasonic irrigation (PUI) is the most used. Objective: To evaluate, in vitro, the effect of ultrasound streaming (US) in the disinfection of flattened root canal systems prepared by the ProTaper, BioRaCe and Reciproc systems, utilizing the microbiological culture. Methodology: Extracted human mandibular incisors (n=84) were used. Suspensions of Enterococcus faecalis (ATCC 29212) were standardized and inserted along with the teeth immersed in brain-heart infusion (BHI) broth. The contamination was made following a protocol during 5 days. The teeth were randomly divided into six groups: G1, ProTaper Universal; G2, ProTaper Universal with US; G3, BioRaCe; G4, BioRaCe with US; G5, Reciproc; and G6, Reciproc with US. Irrigation was performed with saline solution. After biomechanical preparation, microbiological samples were performed with sterilized paper points, which were diluted and spread on BHI agar; after 48 h, the colony forming units (CFU/mL) were counted for each sample. Results: Groups using ultrasonic agitation presented a greater antibacterial effect than the other ones, even using saline solution as irrigant. The ProTaper Universal system showed the best antibacterial activity of the tested systems (median of 0 CFU/mL with and without surfactant or ultrasonic activation [PUI]). Even with PUI, Reciproc (median of 2.5 CFU/mL with PUI and 5 without it) could not reduce as many colonies as ProTaper Universal without US. The BioRaCe system had greater bacterial reduction when using US (median of 0 CFU/mL with PUI and 30 without it). Conclusions: US promoted greater reduction in the number of bacteria in the flattened root canals prepared with nickel-titanium mechanized systems. Regarding the instruments used, the ProTaper Universal system was the most effective in reducing the bacterial number.
Descritores: Terapia por Ultrassom/métodos
Preparo de Canal Radicular/instrumentação
Preparo de Canal Radicular/métodos
Instrumentos Odontológicos
Cavidade Pulpar/microbiologia
Irrigação Terapêutica/métodos
-Irrigantes do Canal Radicular/uso terapêutico
Fatores de Tempo
Titânio
Terapia por Ultrassom/instrumentação
Contagem de Colônia Microbiana
Desinfecção/instrumentação
Desinfecção/métodos
Reprodutibilidade dos Testes
Enterococcus faecalis/crescimento & desenvolvimento
Cavidade Pulpar/anatomia & histologia
Desenho de Equipamento
Carga Bacteriana
Irrigação Terapêutica/instrumentação
Níquel
Limites: Seres Humanos
Tipo de Publ: Estudo Comparativo
Estudos de Avaliação
Responsável: BR1.1 - BIREME


  8 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Machado, Maria Aparecida de Andrade Moreira
Texto completo
Id: biblio-893642
Autor: CORRÊA, Cléber Gimenez; MACHADO, Maria Aparecida de Andrade Moreira; RANZINI, Edith; TORI, Romero; NUNES, Fátima de Lourdes Santos.
Título: Virtual Reality simulator for dental anesthesia training in the inferior alveolar nerve block
Fonte: J. appl. oral sci;25(4):357-366, July-Aug. 2017. graf.
Idioma: en.
Projeto: National Institute of Science and Technology; . São Paulo Research Foundation.
Resumo: Abstract Objectives This study shows the development and validation of a dental anesthesia-training simulator, specifically for the inferior alveolar nerve block (IANB). The system developed provides the tactile sensation of inserting a real needle in a human patient, using Virtual Reality (VR) techniques and a haptic device that can provide a perceived force feedback in the needle insertion task during the anesthesia procedure. Material and Methods To simulate a realistic anesthesia procedure, a Carpule syringe was coupled to a haptic device. The Volere method was used to elicit requirements from users in the Dentistry area; Repeated Measures Two-Way ANOVA (Analysis of Variance), Tukey post-hoc test and averages for the results' analysis. A questionnaire-based subjective evaluation method was applied to collect information about the simulator, and 26 people participated in the experiments (12 beginners, 12 at intermediate level, and 2 experts). The questionnaire included profile, preferences (number of viewpoints, texture of the objects, and haptic device handler), as well as visual (appearance, scale, and position of objects) and haptic aspects (motion space, tactile sensation, and motion reproduction). Results The visual aspect was considered appropriate and the haptic feedback must be improved, which the users can do by calibrating the virtual tissues' resistance. The evaluation of visual aspects was influenced by the participants' experience, according to ANOVA test (F=15.6, p=0.0002, with p<0.01). The user preferences were the simulator with two viewpoints, objects with texture based on images and the device with a syringe coupled to it. Conclusion The simulation was considered thoroughly satisfactory for the anesthesia training, considering the needle insertion task, which includes the correct insertion point and depth, as well as the perception of tissues resistances during the insertion.
Descritores: Interface Usuário-Computador
Educação em Odontologia/métodos
Treinamento com Simulação de Alta Fidelidade/métodos
Anestesia Dentária/métodos
Anestesiologia/educação
Nervo Mandibular
Bloqueio Nervoso/métodos
-Aptidão
Estudantes de Odontologia
Inquéritos e Questionários
Reprodutibilidade dos Testes
Análise de Variância
Competência Clínica
Imagem Tridimensional
Desenho de Equipamento
Anestesia Dentária/instrumentação
Bloqueio Nervoso/instrumentação
Limites: Seres Humanos
Masculino
Feminino
Adulto
Adulto Jovem
Tipo de Publ: Estudos de Validação
Responsável: BR1.1 - BIREME


  9 / 384 LILACS  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-890728
Autor: Song, Hong-Zhuan; Gu, Juan-Xian; Xiu, Hui-Qing; Cui, Wei; Zhang, Gen-Sheng.
Título: The value of high-flow nasal cannula oxygen therapy after extubation in patients with acute respiratory failure
Fonte: Clinics;72(9):562-567, Sept. 2017. tab, graf.
Idioma: en.
Projeto: National Natural Science Foundation; . Core Talents Plan; . Medical and Health Research Program.
Resumo: OBJECTIVE: To investigate the value of high-flow nasal cannula oxygen therapy after extubation in patients with acute respiratory failure. METHODS: A single-center, prospective, randomized, controlled pilot trial was conducted between January 2013 and December 2014. Sixty enrolled patients were randomized immediately after extubation into either a high-flow nasal cannula group (n=30) or an air entrainment mask group (n=30) at a fixed inspired oxygen fraction (40%). The success rate of oxygen therapy, respiratory and hemodynamic parameters and subjective discomfort (using a visual analogue scale) were assessed at 24h after extubation. RESULTS: The two groups were comparable at extubation. A total of 46 patients were successfully treated including 27 patients in the high-flow nasal cannula group and 19 patients in the air entrainment mask group. Compared to the air entrainment mask group, the success rate of oxygen therapy and the partial pressure of arterial oxygen were significantly higher and the respiratory rate was lower in the high-flow nasal cannula group. In addition, less discomfort related to interface displacement and airway dryness was observed in the high-flow nasal cannula group than in the air entrainment mask group. CONCLUSIONS: At a fixed inspired oxygen fraction, the application of a high-flow nasal cannula after extubation achieves a higher success rate of oxygen therapy and less discomfort at 24h than an air entrainment mask in patients with acute respiratory failure.
Descritores: Oxigenoterapia/métodos
Insuficiência Respiratória/terapia
Ventilação de Alta Frequência/métodos
Extubação/métodos
Cânula
-Oxigênio/metabolismo
Oxigenoterapia/instrumentação
Fatores de Tempo
Ventilação de Alta Frequência/instrumentação
Projetos Piloto
Doença Aguda
Estudos Prospectivos
Reprodutibilidade dos Testes
Resultado do Tratamento
Desenho de Equipamento
Hemodinâmica
Unidades de Terapia Intensiva
Máscaras
Limites: Seres Humanos
Masculino
Feminino
Meia-Idade
Idoso
Idoso de 80 Anos ou mais
Tipo de Publ: Ensaio Clínico Controlado Aleatório
Responsável: BR1.1 - BIREME


  10 / 384 LILACS  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
Texto completo
Id: biblio-890680
Autor: Wang, Hongwei; Zhao, Yiwen; Mo, Zhongjun; Han, Jianda; Chen, Yu; Yu, Hailong; Wang, Qi; Liu, Jun; Li, Changqing; Zhou, Yue; Xiang, Liangbi.
Título: Comparison of short-segment monoaxial and polyaxial pedicle screw fixation combined with intermediate screws in traumatic thoracolumbar fractures: a finite element study and clinical radiographic review
Fonte: Clinics;72(10):609-617, Oct. 2017. tab, graf.
Idioma: en.
Projeto: State Key Laboratory of Robotics; . Materials Processing and Die & Mold Technology; . State Key Laboratory of CAD & CG; . Liaoning Province Doctor Startup Fund; . Clinical Diagnosis and Treatment.
Resumo: OBJECTIVES: No studies have compared monoaxial and polyaxial pedicle screws with regard to the von Mises stress of the instrumentation, intradiscal pressures of the adjacent segment and adjacent segment degeneration. METHODS: Short-segment monoaxial/polyaxial pedicle screw fixation techniques were compared using finite element methods, and the redistributed T11-L1 segment range of motion, largest maximal von Mises stress of the instrumentation, and intradiscal pressures of the adjacent segment under displacement loading were evaluated. Radiographic results of 230 patients with traumatic thoracolumbar fractures treated with these fixations were reviewed, and the sagittal Cobb's angle, vertebral body angle, anterior vertebral body height of the fractured vertebrae and adjacent segment degeneration were calculated and evaluated. RESULTS: The largest maximal values of the von Mises stress were 376.8 MPa for the pedicle screws in the short-segment monoaxial pedicle screw fixation model and 439.9 MPa for the rods in the intermediate monoaxial pedicle screw fixation model. The maximal intradiscal pressures of the upper adjacent segments were all greater than those of the lower adjacent segments. The maximal intradiscal pressures of the monoaxial pedicle screw fixation model were larger than those in the corresponding segments of the normal model. The radiographic results at the final follow-up evaluation showed that the mean loss of correction of the sagittal Cobb's angle, vertebral body angle and anterior vertebral body height were smallest in the intermediate monoaxial pedicle screw fixation group. Adjacent segment degeneration was less likely to be observed in the intermediate polyaxial pedicle screw fixation group but more likely to be observed in the intermediate monoaxial pedicle screw fixation group. CONCLUSION: Smaller von Mises stress in the pedicle screws and lower intradiscal pressure in the adjacent segment were observed in the polyaxial screw model than in the monoaxial pedicle screw fixation spine models. Fracture-level fixation could significantly correct kyphosis and reduce correction loss, and adjacent segment degeneration was less likely to be observed in the intermediate polyaxial pedicle screw fixation group.
Descritores: Vértebras Torácicas/lesões
Fraturas da Coluna Vertebral/cirurgia
Parafusos Pediculares
Fixação Interna de Fraturas/instrumentação
Vértebras Lombares/lesões
-Pressão
Vértebras Torácicas/fisiopatologia
Vértebras Torácicas/diagnóstico por imagem
Fenômenos Biomecânicos
Radiografia
Índices de Gravidade do Trauma
Reprodutibilidade dos Testes
Estudos Retrospectivos
Análise de Variância
Amplitude de Movimento Articular
Fraturas da Coluna Vertebral/fisiopatologia
Fraturas da Coluna Vertebral/diagnóstico por imagem
Resultado do Tratamento
Análise de Elementos Finitos
Desenho de Equipamento
Fixação Interna de Fraturas/métodos
Vértebras Lombares/fisiopatologia
Vértebras Lombares/diagnóstico por imagem
Limites: Seres Humanos
Masculino
Feminino
Adulto
Meia-Idade
Tipo de Publ: Estudo Comparativo
Estudos de Avaliação
Responsável: BR1.1 - BIREME



página 1 de 39 ir para página                         
   


Refinar a pesquisa
  Base de dados : Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde