Pesquisa | SciELO

ABSTRACT Despite the importance given to Silicon in the relief of stress in cultivated plants, there are no experimental studies on abiotic stresses that address this function of Si in plants under natural environments, aiming to identify responses that would indicate acclimatisation to the conditions at their place of origin. The goal of this study was to answer the following questions: 1) Does abiotic stress increase Si absorption? 2) Does the presence of Si stimulate biomass production in natural environments? and 3) Do plants from different environments display differences in Si absorption? To do so, Eugenia punicifolia was selected as a study species since it has a wide distribution, occurring in three different physiognomies: Coastal Savanna, Dense Deciduous Shrubland and Seasonal Deciduous Forest. The Si absorption varied depending on the temperature and this was directly related to increases in dry matter production in E. punicifolia plants, suggesting that this may be a relief mechanism for temperature and water stresses. Differences in the response to stress conditions may be a result of the phenotypic plasticity which occurs in E. punicifolia and suggests that plasticity could be a useful asset in the use of Si fertilizer for crops. origin questions 1 2 3 so distribution physiognomies Savanna Forest E crops

https://doi.org/10.1590/0034-737x2024710026

Treatment resistance in schizophrenia: a meta-analysis of prevalence and correlates schizophrenia metaanalysis meta analysis
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Diniz, Elton

; Fonseca, Lais

; Rocha, Deyvis

; Trevizol, Alisson

; Cerqueira, Raphael

; Ortiz, Bruno

; Brunoni, André R.

; Bressan, Rodrigo

; Correll, Christoph U.

; Gadelha, Ary

Brazilian Journal of Psychiatry

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Out 2023, Volume 45 Nº 5 Páginas 448 - 458

Resumo: En | Texto: En | PDF: En

Objectives: To determine the prevalence and correlates of treatment-resistant schizophrenia (TRS) through a systematic review and meta-analysis. Methods: Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) criteria, an electronic search was performed in PubMed and Embase through May 17, 2022. All study designs that assessed a minimum of 20 schizophrenia-spectrum patients and provided data on TRS prevalence or allowed its calculation were included. Estimates were produced using a random-effects model meta-analysis. Results: The TRS prevalence across 50 studies (n = 29,390) was 36.7% (95%CI 33.1-40.5, p < 0.0001). The prevalence ranged from 22% (95%CI 18.4-25.8) in first-episode to 39.5% (95%CI 32.2-47.0) in multiple-episode samples (Q = 18.27, p < 0.0001). Primary treatment resistance, defined as no response from the first episode, was 23.6% (95%CI 20.5-26.8) vs. 9.3% (95%CI 6.8-12.2) for later-onset/secondary (≥ 6 months after initial treatment response). Longer illness duration and recruitment from long-term hospitals or clozapine clinics were associated with higher prevalence estimates. In meta-regression analyses, older age and poor functioning predicted greater TRS. When including only studies with lower bias risk, the TRS prevalence was 28.4%. Conclusion: Different study designs and recruitment strategies accounted for most of the observed heterogeneity in TRS prevalence rates. The results point to early-onset and later-onset TRS as two separate disease pathways requiring clinical attention. Registration number: PROSPERO CRD42018092033. Objectives treatmentresistant resistant (TRS metaanalysis. metaanalysis meta analysis. analysis meta-analysis Methods MetaAnalyses Meta Analyses PRISMA (PRISMA criteria 17 2022 2 schizophreniaspectrum spectrum included randomeffects random effects Results 5 n 29,390 29390 29 390 367 36 7 36.7 95%CI 95CI CI 95 33.140.5, 331405 33.1 40.5, 33 1 40 33.1-40.5 0.0001. 00001 0.0001 . 0 0001 0.0001) 22 18.425.8 184258 18.4 25.8 18 4 25 8 18.4-25.8 firstepisode episode 395 39 39.5 32.247.0 322470 32.2 47.0 32 47 32.2-47.0 multipleepisode multiple Q 1827 27 18.27 resistance 236 23 23.6 20.526.8 205268 20.5 26.8 26 20.5-26.8 vs 93 9 3 9.3 6.812.2 68122 6.8 12.2 12 6.8-12.2 lateronset/secondary lateronsetsecondary later onset/secondary onset secondary ≥ ( response. response) longterm long term estimates metaregression regression analyses risk 284 28 28.4% Conclusion rates earlyonset early lateronset attention number CRD42018092033 CRD 202 29,39 2939 36. 140 33.140.5 33140 331 33. 405 40.5 33.1-40. 0000 0.000 000 425 18.425. 18425 184 18. 258 25. 18.4-25. 39. 247 32.247. 32247 322 32. 470 47. 32.2-47. 182 18.2 23. 526 20.526. 20526 205 20. 268 26. 20.5-26. 9. 812 6.812. 6812 68 6. 122 12. 6.8-12. onsetsecondary 28.4 CRD4201809203 29,3 293 14 33.140. 3314 40. 33.1-40 0.00 00 42 18.425 1842 18.4-25 24 32.247 3224 32.2-47 52 20.526 2052 20.5-26 81 6.812 681 6.8-12 28. CRD420180920 29, 33.140 33.1-4 0.0 18.42 18.4-2 32.24 32.2-4 20.52 20.5-2 6.81 6.8-1 CRD42018092 33.14 33.1- 0. 18.4- 32.2- 20.5- 6.8- CRD4201809 CRD420180 CRD42018 CRD4201 CRD420 CRD42 CRD4

https://doi.org/10.47626/1516-4446-2023-3126

Depredación de Leptodeira polysticta (Dipsadidae) por Tliltocatl kahlenbergi (Theraphosidae) en el bosque tropical de Los Tuxtlas, Veracruz
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Cortés-Ortiz, Bruno

; Aguilar-Herrera, Eduardo A.

; Jiménez-Arcos, Víctor H.

Revista latinoamericana de herpetología

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Dez 2022, Volume 5 Nº 4 elocation e528

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen Reportamos el primer caso de depredación de la Culebra Ojo de Gato (Leptodeira polysticta) por la Tarántula Veracruzana (Tliltocatl kahlenbergi) en el bosque tropical de la región de los Tuxtlas, Veracruz, México. La documentación de este evento proporciona una interacción ecológica para L. polysticta, lo cual contribuye al conocimiento de la red trófica en este ecosistema a través de la documentación de historia natural.

Abstract We report the first case of predation of the Small-spotted Cat-eyed Snake (Leptodeira polysticta) by the Veracruzan Tarantula (Tliltocatl kahlenbergi) in the tropical forest of the Tuxtlas region, Veracruz, Mexico. The documentation of this event provides an ecological interaction for L. polysticta, which provides insights on knowledge of the food web in this ecosystem through natural history documentation.

https://doi.org/10.22201/fc.25942158e.2022.4.528

Negative dimension stability across clinical stages and sociodemographic characteristics in schizophrenia
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Koga, Gabriela

; Haguiara, Bernardo

; Ortiz, Bruno

; Noto, Cristiano

; Freitas, Rosana Ramos

; Elkis, Helio

; Bressan, Rodrigo

; Ziebold, Carolina

; Gadelha, Ary

Brazilian Journal of Psychiatry

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Out 2022, Volume 44 Nº 5 Páginas 558 - 560

Resumo: En | Texto: En | PDF: En

https://doi.org/10.47626/1516-4446-2022-2570

Prevalencia de retinopatía diabética en una zona rural de Argentina
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Ortiz-Basso, Tomás

; Boietti, Bruno R.

; Gómez, Paula V.

; Boffelli, Analía D.

; Paladini, Ariel A.

Medicina (Buenos Aires)

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Fev 2022, Volume 82 Nº 1 Páginas 81 - 90

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Diabetic retinopathy is one of the major problems public health is facing in the 21st century. The worldwide prevalence is increasing; however, little is known about the frequency of this disease in Argentina. Tele-ophthalmology programs have helped to face and to better understand this disease, mainly in rural areas. The aim of this study was to estimate the prevalence of diabetic retinopathy in the province of La Pampa. A cross-sectional observational study was carried out, evaluating the characteristics of the population assisted by a tele-ophthalmology program in a rural area of the province. The images, taken with a non-mydriatic retinal camera, the intraocular pressure and general characteristics of the population were evaluated. A disease prevalence of 21.5% was estimated and 14.1% of them had a vision-threatening diabetic retinopathy. In addition, it was observed that 5.0% had glaucoma, 63.4% hypertension and 42.6% dyslipidemia. These findings are similar to those reported in other countries around the world. These data are fundamental to understand the details of the epidemiological situation in this region and to be able to develop health strategies to deal with this disease.

Resumen La retinopatía diabética es uno de los grandes problemas que enfrenta la salud pública en el siglo XXI. La prevalencia mundial se encuentra en constante aumento; sin embargo, poco se conoce sobre la frecuencia de esta enfermedad en la Argentina. Los programas de tele-oftalmología han ayudado a combatir y a comprender mejor esta enfermedad, principalmente en áreas rurales. El objetivo del siguiente tra bajo fue estimar la prevalencia de la retinopatía diabética en la provincia de La Pampa. Se realizó un estudio observacional de corte transversal, evaluando las características de la población asistida por un programa de tele-oftalmología en la zona rural de la provincia. Se evaluaron imágenes de retina obtenidas con un retinógrafo no midriático, la presión intraocular y características generales de la población. Se estimó una prevalencia del 21.5% y un 14.1% de estas personas tenían una amenaza visual grave. Además, se observó que el 5.0% tenían glaucoma, 63.4% hipertensión arterial y 42.6% dislipemia. Estos resultados son similares a los presentados en otros países del mundo. Son datos fundamentales para comprender detalles de la situación epidemiológica en esta región y poder armar estrategias sanitarias para enfrentar a esta enfermedad.

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Effects of ammonia and nitrite on food consumption of the Amazon River prawn Macrobrachium amazonicum (Heller, 1862) postlarvae
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Ribeiro-de-Campos, Bruno

; Ortiz-Kracizy, Rafael

; Furtado, Plínio Schmidt

; Volkweis-Zadinelo, Izabel

; Cupertino-Ballester, Eduardo Luis

Latin american journal of aquatic research

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Set 2021, Volume 49 Nº 4 Páginas 684 - 688

Resumo: En | Texto: En | PDF: En

ABSTRACT Experiments were carried out to study the effects of ammonia and nitrite on food consumption of Macrobrachium amazonicum postlarvae. Postlarvae (average weight of 0.0625 g) were exposed during 21 days to four concentrations of total ammonia (0, 1.05, 2.1 and 4.2 mg. NH3+NH4+ L-1) and four concentrations of nitrite (0, 0.075, 0.15 and 0.30 mg N-NO2- L-1). After the exposure period, six prawns per treatment were maintained individually in 250 mL experimental units to analyze the food consumption as a function of the amount of food offered and the leftovers during a 24 h period. The food consumption presented significant alterations for prawns exposed to all nitrite concentrations and at concentrations of twice the recommended safety level for total ammonia. According to the results obtained, high concentrations of total ammonia and nitrite affect the food consumption of M. amazonicum adversely, influencing the species performance in culture systems.

https://doi.org/10.3856/vol49-issue4-fulltext-2583 86 downloads

Influencia de la terapia física en la capacidad funcional de pacientes con cardiopatía isquémica
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del Prado de la Torre, Lisset María

; Cartaya Ortiz, Ernesto

MEDISAN

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Jun 2021, Volume 25 Nº 3 Páginas 662 - 674

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: Patients with a history of ischemic cardiopathy generally don´t want to abandon a physical or sport activity; on the other side, they can undoubtedly obtain benefits from a physical exercise plan which brings a better life quality. Objective: To evaluate he functional capacity of patients with ischemic cardiopathy who have been rehabilitated with physical therapy, according to the ergometric trace. Method: A descriptive, longitudinal and prospective study was carried out in the Physical Therapy and Rehabilitation Service from Dr. Juan Bruno Zayas Teaching in Santiago de Cuba during the biennium 2007-2019, in 41 patients who had suffered from a myocardial infarction and were included in a cardiovascular rehabilitation program. To determine the functional capacity, the cardiovascular risk level was compared to the functional class before and after the physical exercise. Results: It was achieved to modify the ergometric response in 87.8 % after applying the rehabilitation program, while the cardiovascular state according to the risk level of the patients was modified in 68.2 % towards the low risk and the functional capacity showed an improvement of 82.9 %. Conclusions: The implementation of a cardiac rehabilitation program was useful in most of the patients, and a significant improvement of the evaluated cardiovascular parameters was obtained, what pointed at a reestablishment of the life quality and of tolerance to efforts.

RESUMEN Introducción: Por lo general los pacientes con antecedentes de cardiopatía isquémica no quieren renunciar a una actividad física o deportiva; por otra parte, es indudable que pueden beneficiarse de un plan de ejercicio físico que promueva una mejor calidad de vida. Objetivo: Evaluar la capacidad funcional de pacientes con cardiopatía isquémica rehabilitados con terapia física, según el trazado ergométrico. Métodos: Se realizó un estudio descriptivo longitudinal y prospectivo en el Servicio de Terapia Física y Rehabilitación del Hospital General Docente Dr. Juan Bruno Zayas de Santiago de Cuba durante el bienio 2017-2019, de 41 pacientes que habían padecido un infarto agudo de miocardio y fueron incluidos en un programa de rehabilitación cardiovascular. Para determinar la capacidad funcional se comparó el nivel de riesgo cardiovascular y la clase funcional, antes y después de aplicado el programa de ejercicios físicos. Resultados: Se logró modificar la respuesta a la prueba ergométrica en 87,8 % después de aplicado el programa de rehabilitación, en tanto el estado cardiovascular, según el nivel de riesgo de los pacientes, fue modificado en 68,2 % hacia el bajo riesgo y la capacidad funcional mostró una mejoría en 82,9 %. Conclusiones: La aplicación de un programa de rehabilitación cardíaca resultó útil en la mayoría de los pacientes, pues se obtuvo una mejoría significativa de los parámetros cardiovasculares evaluados, lo que apuntó a un restablecimiento de la calidad de vida y de la tolerancia al esfuerzo.

Factores de riesgo de trastornos coronarios en pacientes con cardiopatía isquémica incluidos en un programa de rehabilitación cardiovascular
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Cartaya Ortiz, Ernesto

; del Prado de la Torre, Lisset María

MEDISAN

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Fev 2021, Volume 25 Nº 1 Páginas 111 - 122

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: Regular physical activity can contribute to prevent diseases at the minimum cost possible, especially if it is a healthy life habit and not a risky activity that requires a strict and expensive specialized medical supervision. Objective: To evaluate the influence of the physical exercise on risk factors of coronary disorders in patients with ischemic heart disease. Methods: A descriptive investigation of 41 patients that had suffered from a heart attack and were part of a program of cardiovascular rehabilitation was carried out in the Physical Therapy and Rehabilitation Service of Dr. Juan Bruno Zayas Alfonso Teaching General Hospital in Santiago de Cuba, from May, 2017 to the same month in 2019. With this purpose the most frequent risk factors of coronary disorders were selected in the sample, which were analyzed before and after the implementation of the program. Results: Risk factors prevailed in men (68.4 %), with a higher incidence of hypertriglyceridemia in both sexes (56.1 %). After the rehabilitation, a decrease of glycemia, triglycerides and serum cholesterol figures was achieved. Conclusions: The programs of cardiovascular rehabilitation improve the health of the patients and provide as well socioeconomic benefits to the society.

RESUMEN Introducción: La actividad física regular puede contribuir a prevenir las enfermedades al mínimo costo posible, especialmente si se plantea como un hábito de vida saludable y no como una actividad de riesgo que requiere una estricta y costosa supervisión médica especializada. Objetivo: Evaluar la influencia del ejercicio físico sobre factores de riesgo de trastornos coronarios en pacientes con cardiopatía isquémica. Métodos: Se realizó una investigación descriptiva de 41 pacientes que habían padecido un infarto agudo de miocardio y que formaron parte de un programa de rehabilitación cardiovascular en el Servicio de Terapia Física y Rehabilitación del Hospital General Docente Dr. Juan Bruno Zayas Alfonso en Santiago de Cuba, desde mayo de 2017 hasta igual mes de 2019. Para ello se seleccionaron los factores de riesgo de trastornos coronarios más frecuentes en la muestra, los cuales fueron analizados antes y después de aplicado el programa. Resultados: Los factores de riesgo predominaron en los hombres (68,4 %), con una mayor incidencia de la hipertrigliceridemia en ambos sexos (56,1 %). Después de aplicada la rehabilitación, se logró una disminución de las cifras de glucemia, triglicéridos y colesterol sérico. Conclusiones: Los programas de rehabilitación cardiovascular mejoran la salud del paciente e igualmente proporcionan beneficios socioeconómicos a la sociedad.

Reconstrucción combinada de extremidad inferior mediante colgajo libre anastomosado a bypass vascular. Caso clínico
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Dagnino Urrutia, Bruno

; Marine Massa, Leopoldo

; Salisbury Devincenzi, Carolina

; Cifuentes Ortiz, Ignacio

Cirugía Plástica Ibero-Latinoamericana

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Jun 2020, Volume 46 Nº 2 Páginas 207 - 210

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract We present a case of lower extremity reconstruction combining bypass revascularization and free flap for soft tissue coverage in a 72-year-old diabetic man with lower extremity arterial occlusive disease and wide soft tissue defect with bone exposure, who was treated with a popliteal-pedal vein saphenous bypass and a free rectus abdominis muscle flap. The bypass was used as the arterial inflow to the flap and an interposition saphenous vein graft to the popliteal vein as the outflow vessel, due the absence of appropriate local venous receptor vessels. In patients with concomitant occlusive arterial disease, combined treatment with surgical revascularization and free flap coverage is associated with a high rate of limb salvage and excellent functional outcomes. The free rectus abdominis flap provides adequate coverage and filling of the defect, as well as advantages in terms of dissection time and donor vessel diameter. In cases of inadequate recipient vessels, it is possible to use the bypass conduit as an arterial inflow and another venous graft for outflow to a proximal vessel.

Resumen Presentamos un caso de reconstrucción de extremidad inferior combinando revascularización arterial y un colgajo libre en un paciente de 72 años con enfermedad arterial oclusiva y defecto de cobertura con exposición ósea, mediante vascularización poplítea-pedia con bypass de safena y cobertura con colgajo libre de músculo recto abdominal. Debido a la ausencia de vasos receptores adecuados utilizamos el bypass como fuente de irrigación arterial y un injerto venoso entre la vena epigástrica donante y la vena poplítea como drenaje del colgajo. En pacientes que requieren reconstrucción extensa de partes blandas con enfermedad arterial oclusiva concomitante, el tratamiento combinado con revascularización quirúrgica y cobertura con colgajo libre está asociado a una alta tasa de salvamento de la extremidad y excelentes resultados funcionales. El colgajo libre de recto abdominal provee una adecuada cobertura y relleno de defectos tridimensionales, además de presentar ventajas en cuanto al tiempo de disección y el tamaño del pedículo. En casos de vasos receptores inadecuados, es posible utilizar el bypass como fuente arterial y un injerto venoso de drenaje a un vaso proximal.

https://doi.org/10.4321/s0376-78922020000300010 531 downloads

10.

Clinical and Epidemiological Characteristics of Patients Diagnosed with COVID-19 in a Tertiary Care Center in Mexico City: A Prospective Cohort Study
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Ortiz-Brizuela, Edgar

; Villanueva-Reza, Marco

; González-Lara, María F.

; Tamez-Torres, Karla M.

; Román-Montes, Carla M.

; Díaz-Mejía, Bruno A.

; Pérez-García, Esteban

; Olivas-Martínez, Antonio

; Rajme-López, Sandra

; Martinez-Guerra, Bernardo A.

; León-Cividanes, Nereyda A. de

; Fernández-García, Oscar A.

; Guerrero-Torres, Lorena

; Torres-González, Lorena

; Carrera-Patiño, Fabián A.

; Corral-Herrera, Ever A.

; Hernández-Alemón, Aldo N.

; Tovar-Vargas, Maria de los Ángeles

; Serrano-Pinto, Yamile G.

; Espejo-Ortiz, Cristian E.

; Morales-Ortega, María de la L.

; Lozano-Cruz, Óscar A.

; Cárdenas-Fragoso, José L.

; Vidal-Mayo, José de J.

; Hernández-Gilsoul, Thierry

; Rivero-Sigarroa, Eduardo

; Domínguez-Cherit, Guillermo

; Cervantes-Villar, Luz E.

; Ramos-Cervantes, Maria del P.

; Ibarra-González, Violeta

; Calva-Mercado, Juan J.

; Sierra-Madero, Juan G.

; López-Íñiguez, Álvaro

; Ochoa-Hein, Eric

; Crabtree-Ramírez, Brenda E.

; Galindo-Fraga, Arturo

; Guerrero-Almeida, María de L.

; Ruiz-Palacios, Guillermo M.

; Gulías-Herrero, Alfonso

; Sifuentes-Osornio, José

; Kershenobich-Stalnikowitz, David

; Ponce-de-León, Alfredo

Revista de investigación clínica

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Jun 2020, Volume 72 Nº 3 Páginas 165 - 177

Resumo: En | Texto: En | PDF: En

ABSTRACT Background: Regional information regarding the characteristics of patients with coronavirus disease (COVID)-19 is needed for a better understanding of the pandemic. Objective: The objective of the study to describe the clinical features of COVID-19 patients diagnosed in a tertiary-care center in Mexico City and to assess differences according to the treatment setting (ambulatory vs. hospital) and to the need of intensive care (IC). Methods: We conducted a prospective cohort, including consecutive patients with COVID-19 from February 26, 2020 to April 11, 2020. Results: We identified 309 patients (140 inpatients and 169 outpatients). The median age was 43 years (interquartile range, 33-54), 59.2% men, and 18.6% healthcare workers (12.3% from our center). The median body mass index (BMI) was 29.00 kg/m2 and 39.6% had obesity. Compared to outpatients, inpatients were older, had comorbidities, cough, and dyspnea more frequently. Twenty-nine (20.7%) inpatients required treatment in the IC unit (ICU). History of diabetes (type 1 or 2) and abdominal pain were more common in ICU patients compared to non-ICU patients. ICU patients had higher BMIs, higher respiratory rates, and lower room-air capillary oxygen saturations. ICU patients showed a more severe inflammatory response as assessed by white blood cell count, neutrophil and platelet count, C-reactive protein, ferritin, procalcitonin, and albumin levels. By the end of the study period, 65 inpatients had been discharged because of improvement, 70 continued hospitalized, and five had died. Conclusions: Patients with comorbidities, either middle-age obese or elderly complaining of fever, cough, or dyspnea, were more likely to be admitted. At admission, patients with diabetes, high BMI, and clinical or laboratory findings consistent with a severe inflammatory state were more likely to require IC.

https://doi.org/10.24875/ric.20000211 533 downloads

11.

Schneider’s first-rank symptoms as predictors of remission in antipsychotic-naive first-episode psychosis
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Malinowski, Fernando R.

; Tasso, Brazilio de C.

; Ortiz, Bruno B.

; Higuchi, Cinthia H.

; Noto, Cristiano

; Belangero, Sintia I.

; Bressan, Rodrigo A.

; Gadelha, Ary

; Cordeiro, Quirino

Brazilian Journal of Psychiatry

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Fev 2020, Volume 42 Nº 1 Páginas 22 - 26

Resumo: En | Texto: En | PDF: En

Objective: German psychiatrist Kurt Schneider proposed the concept of first-rank symptoms (FRS) of schizophrenia in 1959. However, their relevance for diagnosis and prediction of treatment response are still unclear. Most studies have investigated FRS in chronic or medicated patients. The present study sought to evaluate whether FRS predict remission, response, or improvement in functionality in antipsychotic-naive first-episode psychosis. Methods: Follow-up study of 100 patients at first episode of psychosis (FEP), with no previous treatment, assessed at baseline and after 2 months of treatment. The participants were evaluated with the standardized Positive and Negative Syndrome Scale (PANSS) and Global Assessment of Functioning (GAF) and for presence of FRS. Results: Logistic regression analysis showed that, in this sample, up to three individual FRS predicted remission: voices arguing, voices commenting on one’s actions, and thought broadcasting. Conclusion: Specific FRS may predict remission after treatment in FEP patients. This finding could give new importance to Kurt Schneider’s classic work by contributing to future updates of diagnostic protocols and improving estimation of prognosis.

https://doi.org/10.1590/1516-4446-2018-0237 1754 downloads

12.

Efecto de la rehabilitación física sobre la tensión arterial y la frecuencia cardíaca en pacientes con infarto del miocardio
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del Prado de la Torre, Lisset María

; Cartaya Ortiz, Ernesto

; León Duharte, Dalgis

; Magdariaga González, Liudmila

MEDISAN

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Ago 2019, Volume 23 Nº 4 Páginas 607 - 618

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT Introduction: Numerous epidemiological studies carried out in the last four decades have demonstrated the negative effects of the physical inactivity, as well as the benefits that the regular practice of exercises represents for health in general. Objective: To evaluate the effect of physical therapy on arterial tension and the heart frequency in patients with ischemic heart disease who suffered acute myocardial infarction. Methods: A descriptive, longitudinal and prospective study of 41 patients with ischemic heart disease that suffered acute myocardial infarction and carried out physical exercises as part of the rehabilitative treatment in the Service of Physical Therapy and Rehabilitation of Dr. Juan Bruno Zayas Alfonso Teaching General Hospital in Santiago de Cuba was carried out from May, 2017 to the same month of 2018, for which a schedule for gathering data was used during each session of the rehabilitation program. Results: The arterial tension and the basal heart frequency had a tendency to decrease and during the physical activity they increased within the limits accepted as physiologic, what demonstrated a good ionotropic response. Conclusions: The used program of cardiovascular rehabilitation improved the functional capacity of those affected after the myocardial infarction.

RESUMEN Introducción: Numerosos estudios epidemiológicos efectuados en las últimas cuatro décadas han demostrado los efectos negativos de la inactividad física, así como los beneficios que representa la práctica regular de ejercicios para la salud en general. Objetivo: Evaluar el efecto de la terapia física sobre la tensión arterial y la frecuencia cardíaca en pacientes con cardiopatía isquémica que sufrieron infarto agudo del miocardio. Métodos: Se realizó un estudio descriptivo, longitudinal y prospectivo de 41 pacientes con cardiopatía isquémica que sufrieron infarto agudo del miocardio y realizaron ejercicios físicos como parte del tratamiento rehabilitador en el Servicio de Terapia Física y Rehabilitación del Hospital General Docente Dr. Juan Bruno Zayas Alfonso de Santiago de Cuba, desde mayo de 2017 hasta igual mes de 2018, para lo cual se utilizó una planilla de recolección de datos durante cada sesión del programa de rehabilitación. Resultados: La tensión arterial y la frecuencia cardíaca basal tuvieron una tendencia a la disminución y durante la actividad física aumentaron dentro de los límites aceptados como fisiológicos, lo que demostró una buena respuesta ionotrópica. Conclusiones: El programa de rehabilitación cardiovascular empleado mejoró la capacidad funcional de los afectados luego del infarto del miocardio.

13.

Estudio experimental de la carbonatación del concreto
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Chinè-Polito, Bruno

; Cuevas-Kauffmann, Rommel

; Jiménez-Salas, Ronald

; Ortiz-Quesada, Giannina

Revista Tecnología en Marcha

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Jun 2019, Volume 32 Nº 2 Páginas 68 - 81

Resumo: Es En | Texto: Es En | PDF: Es | PDF: En

Resumen En el sector civil de la construcción, el concreto y el refuerzo metálico representan aun los materiales de mayor importancia, aunque sean muy vulnerables por los agentes atmosféricos, como en el caso de su degradación por corrosión. En Costa Rica, debido a la falta de métodos de monitoreo de las estructuras existentes y a una deficiente política preventiva en términos de mantenimiento, se hace urgente el desarrollo de modelos predictivos que permitan intervenir a tiempo las estructuras antes de que se comprometa de alguna forma la integridad de los usuarios. En este artículo se presentan los resultados de una investigación sobre la carbonatación por causa del gas CO2, considerando el estudio experimental de la carbonatación del concreto sin la presencia del refuerzo metálico. Se usan métodos de carbonatación en cámara acelerada bajo condiciones muy controladas, ensayos de difracción de rayos X y químicos con el propósito de verificar el avance de la profundidad de carbonatación en el tiempo. Los resultados experimentales demuestran la efectividad del proceso en la cámara de carbonatación acelerada y brindan la variación de la resistencia a compresión de los especímenes de concreto, con el avance del frente de carbonatación en el tiempo.

Abstract In the construction sector, the concrete and the steel bars represent still the key components, although they are very vulnerable by the atmospheric agents, as in the case of their degradation caused by corrosion. In Costa Rica, due to the absence of effective monitoring methods of civil structures and preventive maintenance actions, predictive model are required to avoid damages to the structure and protect the safety of the users. In this work, we present the results of a study for the carbonation due to the CO2 gas, considering the experimental study of the concrete carbonation without the reinforcing bar. We use an accelerated carbonation chamber under strictly controlled conditions, X ray diffraction and chemical analysis to verify the progress of the carbonation depth in time. The experimental results show the effectiveness of the accelerated carbonation process and give the compression strength of the concrete samples for the different carbonation depth measured in time.

https://doi.org/10.18845/tm.v32i2.4350

14.

Reconstrucción de pared torácica con colgajo de latissimus dorsi en pacientes pediátricos
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Dagnino Urrutia, Bruno L

; Patillo Silva, Juan Carlos

; Salisbury Devizenci, Carolina

; Cifuentes Ortiz, Ignacio J

Cirugía Plástica Ibero-Latinoamericana

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Mar 2019, Volume 45 Nº 1 Páginas 67 - 72

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

Abstract Background and Objective Primary tumor of the thoracic wall is a rare entity in children. Surgical treatment commonly involves resection of the chest wall, potentially leaving large defects that can require complex reconstruction. These may include skeletal and soft tissue reconstruction with alloplastic materials and regional flaps. We report our experience in thoracic wall reconstruction after extensive resection due to primary wall tumors resection in children. Methods We present 2 cases of pediatric patients with thoracic wall tumor who were managed multidisciplinary with wide resection and reconstructed with mesh coverage and latissimus dorsi myocutaneous flap. Results The latissimus dorsi flap was a good alternative for coverage of skeletal reconstruction in the presented cases. Conclusions Multidisciplinary management of these pathologies is fundamental given the need to perform large thoracic ablations.

Resumen Introducción y Objetivo La patología tumoral primaria de pared torácica es una entidad poco frecuente en niños. El tratamiento quirúrgico comúnmente involucra la resección de la pared torácica, pudiendo dejar grandes defectos que requieren reconstrucción compleja. Estos pueden incluir la reconstrucción de tejidos blandos y esqueléticos con materiales aloplásticos y colgajos regionales. Presentamos nuestra experiencia en reconstrucción torácica secundaria a tumores primarios de pared torácica en población pediátrica. Material y Método Describimos 2 casos clínicos de pacientes pediátricos con tumores de pared torácica manejados multidisciplinariamente con resección amplia, cobertura con malla y colgajo miocutáneo de latissimus dorsi. Resultados El colgajo de latissimus dorsi fue una buena alternativa en estos 2 casos para la cobertura de la reconstrucción esquelética en niños. Conclusiones El abordaje multidisciplinario de estas patologías es fundamental dada la necesidad de realizar grandes ablaciones torácicas.

https://doi.org/10.4321/s0376-78922019000100011 604 downloads

15.

Modificaciones del trazado electrocardiográfico y la contractilidad cardíaca en pacientes con cardiopatía isquémica rehabilitados mediante ejercicio físico
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Cartaya Ortiz, Ernesto

; del Prado de la Torre, Lisset

; León Duharte, Dalgis

MEDISAN

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Fev 2019, Volume 23 Nº 1 Páginas 65 - 76

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT A descriptive, longitudinal and prospective investigation of 41 patients with a history of acute myocardial infarction who were part of a program of cardiovascular rehabilitation in the Service of Physical Therapy and Rehabilitation from "Dr. Juan Bruno Zayas Alfonso" Teaching General Hospital in Santiago de Cuba was carried out from May, 2017 to the same month in 2018, with the aim of evaluating the effect of the physical training on their cardiovascular function. The cardiovascular function was examined through the echocardiogram and the electrocardiogram, before and after the program was applied, and at the end of the study a positive modification of the echocardiographical and electrocardiographical variables was obtained with a higher degree of recovery of the segmental contractility. It could be concluded that the program had an important role in the restoration of the heart function and, with it, the physical and psychological capacity of the patients improved, so that it was beneficial for them and for the society.

RESUMEN Se realizó una investigación descriptiva, longitudinal y prospectiva de 41 pacientes con antecedentes de infarto agudo del miocardio, que formaron parte de un programa de rehabilitación cardiovascular en el Servicio de Terapia Física y Rehabilitación del Hospital General Docente “Dr. Juan Bruno Zayas Alfonso” de Santiago de Cuba, desde mayo de 2017 hasta igual mes de 2018, con vistas a evaluar el efecto del entrenamiento físico sobre la función cardiovascular de estos. Se examinó la función cardiovascular a través del ecocardiograma y el electrocardiograma, antes y después de aplicado el programa, y al final del estudio se obtuvo una modificación positiva de las variables eco- y electrocardiográficas, con un mayor grado de recuperación de la contractilidad segmentaria. Pudo concluirse que el programa tuvo un papel importante en la restauración de la función cardíaca y, con ello, se mejoró la capacidad física y psicológica de los pacientes, de manera que fue beneficioso para estos y para la sociedad.

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