RESUMO A paratuberculose em bovinos de corte já foi diagnosticada no estado do Rio Grande do Sul, mas relatada em apenas um rebanho. Nesse contexto, o objetivo desta pesquisa é verificar se a paratuberculose pode ser detectada em rebanhos de bovinos de corte de diferentes mesorregiões do RS, por meio do teste ELISA. As amostras foram coletadas de bovinos provenientes de seis mesorregiões, entre elas as maiores produtoras de bovinos de corte do RS. Apenas duas amostras foram classificadas como suspeitas no teste de ELISA, as outras 391 amostras foram negativas. Os resultados demonstram baixa detecção da doença nas mesorregiões testadas, com apenas 0,5% das amostras com resultado suspeito. Assim, esses dados demonstram que a enfermidade é pouco frequente nos rebanhos testados e que um programa de controle pode ser implementado de forma viável e economicamente lucrativa.

Abstract The current study addresses the influence of the excitation frequency content on the efficiency of a tuned liquid column damper (TLCD) to control the displacement response in structures subjected to seismic excitations. A time-domain stochastic stationary analysis is performed, and an equivalent statistical linearization for the TLCD is obtained. The results show that the TLCD is more efficient in structures subjected to broadband processes. In narrowband processes, the maximum performance of the TLCD occurs when the linear equivalent period of the system TLCD-structure tunes the TLCD period, and the frequency of the structure matches the predominant frequency of the input motion. Results derived from this analysis are validated through two time-history seismic analyses.

Objective: To describe the prevalence of isthmocele as an incidental finding in patients with a history of cesarean section and associated clinical symptoms. Methods: Descriptive cross-sectional study using nonprobabilistic sampling for convenience in patients with a history of cesarean section, scheduled for hysteroscopy between November 2014 and March 2015, in the gynecological endoscopic surgery service of the Hospital San José de Bogotá, Colombia. Results: 42 patients were eligible for the study because of their previous cesarean section and all were included. The frequency of isthmocele was 83.3% in hysteroscopy, with similar localization in the isthmus and cervix. The main clinical characteristic presented by the patients was abnormal uterine bleeding (85.7%), while the less common was infertility (7.1%). A higher prevalence of dysmenorrhea (65.7% vs. 42.9%) was observed in patients with isthmocele, a history of 2 or more cesareans (60% vs. 42.9%) and an emergency cesarean section (54, 3% vs. 28.6%) compared to the group of patients without isthmocele, in the latter group it was noted that 100% of the patients had no previous history of labor. In women with a history of cesarean section and presence of symptoms such as abnormal uterine bleeding, dysmenorrhea, pelvic pain, infertility and dyspareunia, the frequency of isthmocele diagnosed by hysteroscopy was greater than 80%. Conclusion: Isthmocele is due to abnormal uterine cicatrization after cesarean section, other studies are required to determine not only the prevalence but also the protective factors that reduce its incidence to have a positive impact on this kind of patients.

Objetivo: Describir la prevalencia de istmocele como hallazgo incidental en pacientes con antecedente de cesárea y síntomas clínicos asociados. Métodos: Estudio descriptivo de corte transversal, mediante muestreo no probabilístico por conveniencia, en pacientes con antecedente de cesárea, programadas para histeroscopia entre noviembre de 2014 y marzo de 2015, en el servicio de cirugía endoscópica ginecológica del Hospital San José de Bogotá, Colombia. Resultados: 42 pacientes fueron elegibles para el estudio por su antecedente de cesárea y todas fueron incluidas. La frecuencia de istmocele fue 83,3% en la histeroscopia, con similar localización en istmo y cérvix. La principal característica clínica presentada por las pacientes fue hemorragia uterina anormal (85,7%), mientras que la menos frecuente fue infertilidad (7,1%). En las pacientes con presencia de istmocele se observó una mayor prevalencia de dismenorrea (65,7% vs. 42,9%), antecedente de 2 o más cesáreas (60% vs. 42,9%) y cesárea de urgencia (54,3% vs. 28,6%) comparadas con el grupo de pacientes sin istmocele, en este último grupo se advirtió que el 100% de las pacientes no tenían antecedente de trabajo de parto previo. En mujeres con antecedente de cesárea y presencia de síntomas como sangrado uterino anormal, dismenorrea, dolor pélvico, infertilidad y dispareunia, la frecuencia de istmocele diagnosticado por histeroscopia fue mayor del 80%. Conclusión: El istmocele se debe a la cicatrización anómala uterina posterior a una cesárea, se requieren otros estudios para determinar no solo la prevalencia sino los factores protectores que reduzcan su incidencia para tener un impacto positivo en este tipo de pacientes.