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1.
Dis Esophagus ; 37(4)2024 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-38117958

RESUMO

There is little information on the degree of concordance between the results obtained using the Chicago 3.0 (CCv3.0) and Chicago 4.0 (CCv4.0) protocols to interpret high-resolution manometry (HRM) seeking to determine the value provided by the new swallowing maneuvers included in the last protocol. This is a study of diagnostic tests, evaluating concordance by consistency between the results obtained by the CCv3.0 and CCv4.0 protocols, in patients undergoing HRM. Concordance was assessed with the kappa test. Bland-Altman scatter plots, and Lin's correlation-concordance coefficient (CCC) were used to assess the agreement between IRP measured with swallows in the supine and seated position or with solid swallows. One hundred thirty-two patients were included (65% women, age 53 ± 17 years). The most frequent HRM indication was dysphagia (46.1%). Type I was the most common type of gastroesophageal junction. The most frequent CCv4.0 diagnoses were normal esophageal motility (68.9%), achalasia (15.5%), and ineffective esophageal motility (IEM; 5.3%). The agreement between the results was substantial (Kappa 0.77 ± 0.05), with a total agreement of 87.9%. Diagnostic reclassification occurred in 12.1%, from IEM in CCv3.0 to normal esophageal motility in CCv4.0. Similarly, there was a high level of agreement between the IRP measured in the supine compared to the seated position (CCC0.92) and with solid swallows (CCC0.96). In conclusion, the CCv4.0 protocol presents a high concordance compared to CCv3.0. In the majority of manometric diagnoses there is no reclassification of patients with provocation tests. However, the more restrictive criteria of CCv4.0 achieve a better reclassification of patients with IEM.


Assuntos
Transtornos de Deglutição , Acalasia Esofágica , Transtornos da Motilidade Esofágica , Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Masculino , Transtornos da Motilidade Esofágica/diagnóstico , Chicago , Acalasia Esofágica/diagnóstico , Transtornos de Deglutição/diagnóstico , Transtornos de Deglutição/etiologia , Manometria/métodos
2.
Front Psychiatry ; 14: 1222972, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37645639

RESUMO

Suicide is a complex and multifaceted public health issue that affects individuals from all walks of life, including healthcare professionals such as physicians. According to research, physicians have a higher risk of suicide compared to the general population, with an estimated suicide rate that is two to three times greater than that of the general population. Suicide in physicians can have devastating consequences, not only for the individual but also for their patients and colleagues. The factors contributing to suicide in physicians are numerous and often interrelated. Physicians are exposed to numerous stressors in their daily lives, including long work hours, high workload, burnout, and exposure to traumatic events. These stressors can lead to mental health problems such as depression, anxiety, and substance use disorders, which in turn can increase the risk of suicide. In addition to work-related stressors, personal factors such as relationship problems, financial stress, and a history of mental health problems can also contribute to suicide risk in physicians. Stigma and shame around seeking help for mental health issues may also prevent physicians from seeking treatment, exacerbating the problem. Understanding the complex factors that contribute to suicide in physicians is crucial for developing effective prevention strategies. For this reason, it is necessary to know the behavior of this phenomenon and the factors associated with a higher risk of suicide in this population. However, taking into account that different regions of the world vary in socioeconomic, cultural, professional, occupational, and health attributes, it is to be expected that the behavior of these risk factors will also be heterogeneous. At present, it is presumed that there is a significant gap in the evidence, due to a predominance of evidence on this topic from high-income countries. Considering the importance of having a comprehensive understanding of the risk factors for suicide in the medical population and possible strategies to mitigate this condition, the aim of this review is to analyze the most recent evidence on these factors, and to assess the quality of the evidence and gaps that need to be studied further.

3.
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1535914

RESUMO

Introduction: Limited information is available regarding the clinical and manometric characteristics of different subtypes of achalasia. This study aims to describe these characteristics in patients treated at a prominent hospital in Colombia. Methods: This descriptive observational study included patients diagnosed with achalasia using high-resolution esophageal manometry at Hospital Universitario San Ignacio in Bogotá, Colombia, between 2016 and 2020. We documented the clinical manifestations, manometric findings, treatment approaches, and response to treatment based on the subtype of achalasia. Results: A total of 87 patients were enrolled, with a median age of 51 years, and 56.4% of them were female. The majority had type II achalasia (78.1%), followed by type I (16%) and type III (5.7%). All patients presented with dysphagia, 40.2% experienced chest pain, and 27.6% had gastroesophageal reflux. The clinical parameters, including integrated relaxation pressure value (IRP; median: 24 mmHg, interquartile range [IQR]: 19-33), upper esophageal sphincter pressure (UES; median: 63 mmHg, IQR: 46-98), and lower esophageal sphincter pressure (LES; median: 34 mm Hg, IQR: 26-45), were similar across the different subtypes. Esophageal clearance was incomplete in all patients. Among the 35 patients who received intervention, Heller's myotomy was the most commonly employed procedure (68.5%), followed by esophageal dilation (28.6%). All patients experienced symptomatic improvement, with a median pre-treatment Eckardt score of 5 (IQR: 5-6) and a post-treatment score of 1 (IQR: 1-2). Conclusions: Type II achalasia is the most prevalent subtype. The clinical and manometric findings, as well as treatment response, exhibit similarities among the different subtypes of achalasia. In Colombia, the outcomes of this condition align with those reported in other parts of the world.


Introducción: existe información limitada sobre las características clínicas y manométricas de los diferentes subtipos de acalasia. Este estudio describe dichas características en pacientes manejados en un hospital de referencia en Colombia. Método: estudio descriptivo observacional que incluye a pacientes con diagnóstico de acalasia por manometría esofágica de alta resolución manejados en el Hospital Universitario San Ignacio de Bogotá, Colombia, entre 2016 y 2020. Se describen las manifestaciones clínicas, hallazgos manométricos, tratamiento utilizado y respuesta al mismo según el subtipo de acalasia. Resultados: se incluyeron a 87 pacientes (mediana de edad: 51 años, 56,4% mujeres). La mayoría de tipo II (78,1%), seguido por tipo I (16%) y tipo III (5,7%). Todos presentaron disfagia, 40,2% dolor torácico y 27,6% reflujo gastroesofágico. La clínica y los valores del integral de presión de relajación (IRP; mediana: 24 mm Hg, rango intercuartílico [RIC]: 19-33), presión del esfínter esofágico superior (EES; mediana: 63 mm Hg, RIC: 46-98) y presión del esfínter esofágico inferior (EEI; mediana: 34 mm Hg, RIC: 26-45) fueron similares en los diferentes subtipos. El aclaramiento esofágico fue incompleto en todos los pacientes. Entre 35 pacientes que recibieron manejo intervencionista, la miotomía de Heller fue la intervención más utilizada (68,5%), seguido por la dilatación esofágica (28,6%). La totalidad de estos pacientes presentó una mejoría sintomática con la mediana de Eckardt pretratamiento de 5 (RIC: 5-6) y postratamiento de 1 (RIC: 1-2). Conclusiones: la acalasia tipo II es la más común. La clínica y los hallazgos manométricos y respuesta a tratamiento son similares entre los subtipos de acalasia. En Colombia, esta entidad se comporta de forma similar a lo reportado en otras partes del mundo.

4.
Rev Cardiovasc Med ; 23(9): 323, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39077702

RESUMO

Background: Chagas cardiomyopathy (CC) increases cardiovascular mortality associated with congestive heart failure (CHF), ventricular arrhythmias (VA), and sudden cardiac death (SCD). Different imaging techniques have been tested to assess disease progression and cardiac risk in individuals with Chagas disease (ChD). In this systematic review, we evaluated the accuracy in detecting cardiac complications in CC patients using cardiac magnetic resonance (CMR) and speckle tracking echocardiography (STE). Methods: A search was done on PubMed, Cochrane, and Embase for studies in humans over 18 years of age with ChD. Demographic data, research methodology, imaging parameters, and cardiac outcomes were extracted, and study quality was assessed, resulting in a narrative description. Results: Twelve studies with 1124 patients were analyzed. One study discovered a contractility pattern by STE. Four studies assessed the identification of Early Cardiac Impairment (ECI) and VA risk, respectively, while three studies evaluated the risk of SCD. Global Longitudinal Strain (GLS) identified patients with ECI (-18.5 ± 3.4% non-fibrosis vs -14.0 ± 5.8% fibrosis, p = 0.006 and -18 ± 2% non-fibrosis vs -15 ± 2% fibrosis, p = 0.004). The amount of fibrosis > 11.78% or in two or more contiguous transmural segments were markers for VA risk. GLS and the amount of fibrosis were found to be predictors of SCD. Conclusions: STE may be considered a screening technique for identifying the subclinical status of CHF. CMR using Late Gadolinium Enhancement (LGE) is considered a relevant parameter for stratifying patients with ChD who are at risk of SCD. Fibrosis and GLS can be used as markers to categorize patients at risk for arrhythmias.

5.
Rev. colomb. gastroenterol ; 36(2): 212-217, abr.-jun. 2021. tab
Artigo em Inglês, Espanhol | LILACS | ID: biblio-1289301

RESUMO

Resumen Introducción: La enfermedad por reflujo gastroesofágico (ERGE) refractaria puede conducir a complicaciones potenciales como la esofagitis persistente, estenosis esofágica, anillo de Schatzki y esófago de Barrett. Este estudio describe la motilidad en pacientes con ERGE refractaria y su relación con síntomas esofágicos. Método: Se realizó un estudio observacional analítico a partir de una cohorte retrospectiva en pacientes con diagnóstico de ERGE refractaria y síntomas esofágicos a quienes se les realizó manometría esofágica de alta resolución más impedanciometría. Se describen las características clínicas y demográficas, y la asociación entre los trastornos manométricos y los síntomas esofágicos. Resultados: Se incluyeron 133 pacientes (edad promedio: 54,1 ± 12,5 años). La pirosis y regurgitación (69,2 %) y la disfagia esofágica (13,5 %) fueron los síntomas más comunes. La motilidad normal (75,2 %), el aclaramiento completo del bolo (75,2 %) y la motilidad esofágica inefectiva (MEI) (18 %) fueron los hallazgos manométricos más frecuentes. La unión gastroesofágica tipos II y IIIb estuvieron presentes en el 35,3% y 33,8 % de los casos, respectivamente. La aperistalsis (3,8 %) y el esófago en martillo neumático (Jackhammer; 0,8 %) fueron infrecuentes. El aclaramiento incompleto del bolo se asoció con disfagia esofágica (p = 0,038) y a MEI (p = 0,008). Ningún síntoma esofágico se relacionó significativamente con trastornos de motilidad. Conclusiones: Los resultados de nuestro estudio sugieren que los trastornos de motilidad son infrecuentes en los pacientes con ERGE refractaria. Adicionalmente, sugieren que la presencia de alteraciones de motilidad esofágica no se relaciona con la presencia de síntomas esofágicos y, por tanto, que el tipo de síntoma presentado no permite predecir la existencia de dichos trastornos.


Abstract Introduction: Refractory gastroesophageal reflux disease (GERD) can lead to potential complications such as persistent esophagitis, esophageal stricture, Schatzki ring, and Barrett's esophagus. This study describes motility in patients with refractory GERD, and its association with esophageal symptoms. Materials and methods: An analytical observational study was carried out in a retrospective cohort of patients diagnosed with refractory GERD and esophageal symptoms who underwent high-resolution esophageal manometry and impedance testing. Clinical characteristics, demographics, and the association between motility disorders and esophageal symptoms are described. Results: 133 patients were included (mean age 54.1 ± 12.5 years). Heartburn and regurgitation (69.2%), and esophageal dysphagia (13.5%) were the most common symptoms. Normal motility (75.2%), complete bolus clearance (75.2%), and ineffective esophageal motility (IEM) (18%) were the most frequent manometric findings. Type II and IIIb gastroesophageal junction were observed in 35.3% and 33.8% of the cases, respectively. Esophageal aperistalsis (3.8%) and Jackhammer esophagus (0.8%) were rare findings. Incomplete bolus clearance was associated with esophageal dysphagia (p=0.038) and IEM (p=0.008). No esophageal symptoms were significantly related to motility disorders. Conclusions: The results of the present study suggest that motility disorders are rare in patients with refractory GERD. They also suggest that esophageal motility disorders are not associated with the presence of esophageal symptoms and, therefore, the type of symptom experienced does not allow predicting the existence of such disorders.


Assuntos
Humanos , Masculino , Feminino , Transtornos da Motilidade Esofágica , Transtornos de Deglutição , Refluxo Gastroesofágico , Esofagite , Manometria , Pacientes , Associação , Esôfago de Barrett , Estenose Esofágica
6.
Rev. cienc. salud (Bogotá) ; 19(3): 1-15, 2021. graf, tab
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1367507

RESUMO

Introducción: las caídas intrahospitalarias están dentro de las prioridades nacionales e internacionales en cuanto a calidad asistencial. Aunque se reconocen elementos intrínsecos y extrínsecos al paciente con la presencia de caídas, en Colombia existe poca evidencia al respecto. El objetivo es caracterizar las caídas de pacientes ocurridas entre 2013 y 2016, y sus factores asociados en un hospital de alta complejidad de Bogotá (Colombia). Materiales y métodos: estudio observacional retrospectivo basado en el registro de caídas que ocurrieron en el periodo de análisis en un hospital de alta complejidad. Se utilizó estadística descriptiva y análisis de regresión logística binaria. Resultados: de 951 caídas que ocurrieron entre 2013 y 2016, el 63.1 % se clasificó como eventos adversos. Según la gravedad, el 54.2 % fue "moderado" y "severo". De la muestra de pacientes, el 53.0 % fue hombres, el 65.5 % tenía 65 o más años (mediana = 71 años; mínimo = 16 años y máximo = 98 años), el 23.2 % tenía alguna enfermedad del sistema circulatorio. Se asoció con un mayor riesgo para una caída que culmina en evento adverso: ser mujer (ic95 %; or= 1.08-1.87), el turno laboral noche (ic95 % = 1.09-2.03) y las especialidades clínicas (ic95 % = 1.36-4.84) y quirúrgicas (ic95 % = 1.14-4.46). Conclusión: las caídas de pacientes son un evento adverso importante de intervenir en las instituciones hospitalarias. Se identificaron elementos intrínsecos, principalmente la edad, y extrínsecos, el turno laboral y la especialidad médica, relacionados con la probabilidad de generar un daño en el paciente ante una caída


Introduction:Intrahospitalary falls are among the national and international priorities in terms of quality of care. Although several intrinsic and extrinsic elements associated with patient falls have been recog-nized, information and evidence on these elements are lacking in Colombia. Thus, we aimed to charac-terize the falls of patients and their associated factors in a high-complexity hospital in Bogotá, Colombia between 2013 and 2016. Materials and methods:A retrospective observational study based on the data obtained from the registry of falls that occurred during the study period in a high-complexity hospital in Bogotá, Colombia was carried out. Descriptive statistical analysis and binary logistic regression analysis were performed. Results:Of the 951 falls that occurred between 2013 and 2016, 63.1% were classified as adverse events. According to the severity of falls, 54.2% falls were "moderate" and "severe." According to the demographic characteristics, 53.0% patients were men, 65.5% were ≥65 years old (median: 71 years, minimum: 16 years, maximum: 98 years), and 23.2% had circulatory diseases. The following factors were found to be associated with an increased risk for a fall that culminated in an adverse event: being a woman (95% ci = 1.08­1.87), night shift (95% ci; or = 1.09­2.03), and clinical (95% ci = 1.36­4.84) and sur-gical specialties (95% ci = 1.14­4.46). Conclusion: Patient falls are important adverse events that require intervention in hospital institutions. Intrinsic elements (mainly age) and extrinsic elements (work shift and medical specialty) were identified to cause harm to the patient in the event of a fall


Introdução: as quedas intra-hospitalares estão entre as prioridades nacionais e internacionais quanto àqualidade do atendimento. Embora sejam reconhecidos elementos intrínsecos e extrínsecos ao paciente com a frequência de quedas, na Colômbia há poucas evidências a esse respeito. O objetivo é caracterizar as quedas de pacientes ocorridas entre 2013 e 2016 e seus fatores associados em um hospital de alta complexidade em Bogotá (Colômbia). Materiais e métodos: estudo observacional retrospectivo baseado no registro das quedas ocorridas no período de análise em um hospital de alta complexidade. Foram utilizadas estatística descritiva e análise de regressão logística binária. Resultados: das 951 quedas ocor-ridas entre 2013 e 2016, 63.1% foram classificadas como eventos adversos. De acordo com a gravidade, 54.2% foram "moderadas" e "graves". Da amostra de pacientes, 53.0% eram homens, 65.5% tinham 65 anos ou mais (mediana = 71 anos; mínimo = 16 anos e máximo = 98 anos), 23.2% apresentavam alguma doença do aparelho circulatório. Foi associado a um maior risco de queda que culmina em um evento adverso: ser mulher (ic 95%; or = 1.08-1.87), turno noturno de trabalho (ic 95% = 1.09-2.03) e as especia-lidades clínica (95% ic = 1.36-4.84) e cirúrgica (ic 95% = 1.14-4.46). Conclusão: as quedas de pacientes são um importante evento adverso para intervenção nas instituições hospitalares. Foram identificados ele-mentos intrínsecos, principalmente a idade, e elementos extrínsecos, turno de trabalho e especialidade médica, relacionados à probabilidade de causar dano ao paciente em caso de queda


Assuntos
Humanos , Acidentes por Quedas , Qualidade da Assistência à Saúde , Sistema Único de Saúde , Fatores de Risco , Morbidade , Colômbia , Segurança do Paciente , Dano ao Paciente , Hospitais
7.
Matern Child Health J ; 24(11): 1376-1386, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32815078

RESUMO

OBJECTIVE: To analyze municipal- and individual-level factors related to the prevalence of teenage pregnancy in Colombia during 2015. METHODS: We analyzed 660,767 births registers, of which 21.5% recorded adolescent women. At an individual level, marital status, educational level, area of residence, and access to health services were included in the analysis. At the contextual level, Colombian municipal socioeconomic characteristics and proxies of violence and poverty were analyzed. A multilevel logistic regression model was generated with a Markov Chain Monte Carlo estimation method using 100,000 simulations in MLwiN 2.32 software. RESULTS: Multilevel modeling revealed an increased risk of teenage pregnancy in municipalities with the highest numbers of people expelled by forced displacement (OR 1.21; CI 95%, 1.13-1.29) and with unsatisfied basic needs (OR 1.09; CI 95%, 1.02-1.17). At an individual level, the majority of the teenage women were unmarried and/or had an unstable partnership, a low level of educational, a subsidized health regimen, and resided in the municipal seat. CONCLUSIONS: Municipal contextual variables related to poverty, violence, and social inequity contribute to an increase in teenage pregnancy in Colombia. At the individual level, marital status, educational level, and area of residence is associated with teenage pregnancy. It is therefore imperative to include municipal contextual characteristics in the design of the national political agenda.


Assuntos
Gravidez na Adolescência/prevenção & controle , Gravidez na Adolescência/psicologia , Adolescente , Criança , Colômbia , Feminino , Mapeamento Geográfico , Habitação , Humanos , Modelos Logísticos , Análise Multinível , Gravidez , Gravidez na Adolescência/estatística & dados numéricos , Prevalência , Pesquisa Qualitativa , Fatores Socioeconômicos , Adulto Jovem
8.
Rev. colomb. gastroenterol ; 34(4): 404-410, oct.-dic. 2019. graf
Artigo em Espanhol | LILACS | ID: biblio-1092968

RESUMO

Resumen La manometría anorrectal es la técnica más utilizada para evaluar la función anorrectal y así detectar las anormalidades funcionales del esfínter anal y de coordinación anorrectal. En nuestro laboratorio de fisiología realizamos aproximadamente 15 estudios de manometría anorrectal de alta resolución a la semana, por lo que consideramos que es de vital importancia realizarlo de forma adecuada y tener una correcta interpretación. Mediante este artículo deseamos compartir nuestro protocolo de realización de manometría anorrectal de alta resolución con base en la literatura más relevante.


Abstract Anorectal manometry is the most commonly used technique to evaluate anorectal functioning and coordination and detect functional abnormalities of the anal sphincter. In our physiology laboratory we perform approximately 15 high resolution anorectal manometry studies each week. We consider that proper performance and correct interpretation are vitally important. We want to share our high resolution anorectal manometry protocol based on the most relevant literature through this article.


Assuntos
Humanos , Canal Anal , Fisiologia , Manometria , Literatura
9.
Rev. colomb. gastroenterol ; 34(4): 411-415, oct.-dic. 2019. tab, graf
Artigo em Espanhol | LILACS | ID: biblio-1092969

RESUMO

Resumen La manometría anorrectal de alta resolución es una prueba diagnóstica utilizada para los trastornos motores y sensitivos anorrectales. Consta de una medición del tono basal y de contracción anal; también valora la maniobra de pujo, reflejo rectoanal inhibitorio (RIAR) y parámetros sensitivos rectales. La interpretación convencional de la manometría anorrectal se enfoca en describir aisladamente la región anatómica disfuncional. Sin embargo, con la clasificación de Londres se busca estandarizar el informe de estos resultados, agrupándolos en trastornos mayores, menores y hallazgos no concluyentes, similar a la clasificación de Chicago para trastornos motores esofágicos.


Abstract High resolution anorectal manometry is a diagnostic test, used for anorectal motor and sensory disorders. It consists of measurement of basal tone, anal contraction and squeeze, the rectoanal inhibitory reflex (RAIR), and rectal sensory parameters. The conventional interpretation of anorectal manometry focuses on describing the dysfunctional anatomical region in isolation. However, the London classification seeks to standardize the report of these results, grouping them into major, minor and inconclusive findings in a manner similar to the Chicago classification for esophageal motor disorders.


Assuntos
Humanos , Transtornos de Sensação , Relatório de Pesquisa , Transtornos Motores , Manometria , Padrões de Referência
10.
Water Sci Technol ; 78(5-6): 1115-1128, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30339536

RESUMO

The bio-flocculants used in this study were synthesised by the Mannich reaction, which includes three reagents: a substrate (tannin extracts of Acacia, Quebracho, and Castanea), formaldehyde, and an amine derivative (ethanolamine, diethanolamine, ammonium chloride). Nine natural flocculants were prepared by combining extracts and amines; these products were evaluated in three different wastewater samples in two experimental phases. In phase I, five physicochemical parameters were analysed. From the data obtained, a multivariate, completely randomised design (CRD-Manava) was used, with a factorial arrangement and mean plots. In phase II, the three bio-flocculants with the most statistically significant responses and their mixtures were examined, evaluating 14 biological and physicochemical parameters. Statistical analysis was guided in this phase by CRD blocks, finding a significant removal in the physicochemical parameters analysed in the different types of wastewater and obtaining removal rates between 50 and 90%, depending on the parameter. At the end of both phases, the bio-flocculants acacia-ammonium chloride and quebracho-diethanolamine were the most efficient in the removal of turbidity (34-99%), true colour (93-100%) and total solids (12-99%). In addition, the natural flocculants showed low mutagenicity index (MI: 0.33-0.93) compared to aluminium sulphate (MI: 4.87-8.81).


Assuntos
Acacia/química , Taninos/química , Águas Residuárias/química , Purificação da Água/métodos , Compostos de Alúmen , Floculação , Eliminação de Resíduos Líquidos , Poluentes Químicos da Água
11.
Univ. sci ; 18(1): 51-63, ene.-abr. 2013. ilus, tab
Artigo em Inglês | LILACS | ID: lil-677559

RESUMO

Se compararon química y microbiológicamente morterosde Bogotá, Villa de Leyva y Barichara. Las muestras seanalizaron por espectrometría de absorción y emisión atómica,espectroscopia infrarroja con transformada de Fourier,difracción de Rayos X, microscopía electrónica de barrido yespectroscopia por dispersión de energía. Se encontraron óxidosde silicio, aluminio, calcio, hierro, magnesio, yeso, weddellita,despuljosita, cuarzo, berlinita, carbonatos, mica, feldespatos,silicatos, sales de nitratos, sulfitos y compuestos orgánicos.A su vez, se hallaron partículas irregulares entre 10, 50 y 100µm y fibras de tipo orgánico de 20 µm. Se realizó el conteo deunidades formadoras de colonias por el método de dilucionespara identificar microorganismos fúngicos. Se identificaron lossiguientes géneros Aspergillus, Penicillium, Alternaria, Fusarium,Mucor y Syncephalastrum. La muestra de Bogotá presentó el mayornúmero de UFC/mL y el mayor porcentaje de humedad relativa.La concentración de hongos en esta muestra, a diferencia delas de Villa de Leyva y de Barichara, causó la degradación de lamayoría de los metales identificados. Esta comparación químicay microbiológica propone un plan eficaz de intervención paraeliminar y prevenir el biodeterioro en apoyo a la conservación deobras patrimoniales...


Mortars from Bogotá, Villa de Leyvaand Barichara were compared chemically andmicrobiologically. We analyzed the samples using atomicabsorption and emission spectrometry, Fourier-transforminfrared spectroscopy, X-ray diffraction, scanningelectron microscopy and energy dispersive spectroscopy.Oxides of silicon, aluminum, calcium, iron, magnesium,gypsum, weddellite, despujolsite, quartz, berlinite,carbonate, mica, feldspars, silicates, nitrate salts, sulfites,and organic compounds were identified. In addition,irregular particles between 10, 50 an 100 µm werefound, as well organic fibers of 20 µm. Was performeda CFU count using a dilution method to identify fungalmicroorganisms and found following genera Aspergillus,Penicillium, Alternaria, Fusarium, Mucor and Syncephalastrum.The mortar sample taken in Bogotá presented thehighest number of CFU/mL and the highest percentageof relative humidity. The concentration of fungi in thissample, unlike those from Villa de Leyva and Barichara,caused degradation in most of the metals identified.This chemical and microbiological comparison proposesan effective plan of action to eliminate and preventbiodeterioration in support of the conservation ofheritage constructions...


As amostras foram analisadas por espectrometria deemissão e espectroscopia de absorção atômica, infravermelhocom transformada de Fourier, difração de raios X, microscopiaeletrônica de varredura e espectroscopia de energia dispersiva.Foram identificados óxidos de silício, alumínio, cálcio, ferro,magnésio, gesso, weddellita, despuljosita, quartzo, berlinita,carbonato, mica, feldspato, silicatos, sais de nitratos, sulfitos, ecompostos orgânicos. Partículas irregulares entre os 10, 50 e 100µm foram encontradas bem como fibras de tipo orgânico de20 µm. Realizou-se uma contagem CFU usando um método dediluição para identificar microorganismos fúngicos e encontrousefungos dos gêneros Aspergillus, Penicillium, Alternaria, Fusarium,Mucor e Syncephalastrum. A amostra de Bogotá apresentou o maiornúmero de UFC/mL e umidade relativa do ar. A maior presençade fungos desta amostra, ao contrário das amostras da Villa deLeyva e Barichara, causou degradação na maioria dos metaisidentificados. Esta comparação química e microbiológica podesugerir um plano de ação eficaz para a eliminação e prevenção dabiodegradação e assim preservar obras patrimoniais.Departamento de Química, Facultad de Ciencias. PontificiaUniversidad Javeriana. Bogotá, D.C., Colombia.Departamento de Microbiología, Facultad de Ciencias. PontificiaUniversidad Javeriana. Bogotá, D.C., Colombia.Departamento de Biología, Facultad de Ciencias. PontificiaUniversidad Javeriana. Bogotá, D.C., Colombia.Departamento de Arquitectura, Facultad de Arquitectura y Diseño.Pontificia Javeriana. Bogotá, D.C., Colombia.Received: 15-12-2012 Accepted: 02-02-2013 Published on line: 28-02-2013 Edited by Alberto Acosta mUniversitas Scientiarum, Journal of the Faculty of Sciences, Pontificia Universidad Javeriana, is licensed under the Creative Commons 2.5 of Colombia: Attribution - Noncommercial - No Derivative...


Assuntos
Biodegradação Ambiental , Microbiologia/classificação , Microbiologia/história
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