Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 73
Filtrar
1.
PLoS Biol ; 22(1): e3002452, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38198502

RESUMO

Humans often face the challenge of making decisions between ambiguous options. The level of ambiguity in decision-making has been linked to activity in the parietal cortex, but its exact computational role remains elusive. To test the hypothesis that the parietal cortex plays a causal role in computing ambiguous probabilities, we conducted consecutive fMRI and TMS-EEG studies. We found that participants assigned unknown probabilities to objective probabilities, elevating the uncertainty of their decisions. Parietal cortex activity correlated with the objective degree of ambiguity and with a process that underestimates the uncertainty during decision-making. Conversely, the midcingulate cortex (MCC) encodes prediction errors and increases its connectivity with the parietal cortex during outcome processing. Disruption of the parietal activity increased the uncertainty evaluation of the options, decreasing cingulate cortex oscillations during outcome evaluation and lateral frontal oscillations related to value ambiguous probability. These results provide evidence for a causal role of the parietal cortex in computing uncertainty during ambiguous decisions made by humans.


Assuntos
Mapeamento Encefálico , Tomada de Decisões , Humanos , Mapeamento Encefálico/métodos , Assunção de Riscos , Incerteza , Lobo Parietal , Imageamento por Ressonância Magnética/métodos
2.
Rev. colomb. neumol ; 35(2): 40-44, 05/12/2023.
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1551152

RESUMO

La tuberculosis es una infección de distribución mundial con una alta morbimortalidad en países subdesarrollados. Presentamos el caso de una mujer de 55 años con cuadro de dos meses de adenomegalias cervicales, pérdida de peso y fiebre con posterior disnea de esfuerzo progresiva. Ingresó por urgencias en falla ventilatoria y hallazgos radiológicos compatibles con síndrome de dificultad respiratoria aguda (SDRA) requiriendo ventilación mecánica invasiva. Se demostró infección por M. tuberculosis por PCR en tiempo real GeneXpert MTB/RIF Ultra y en cultivo de medio líquido de esputo, con crecimiento en tiempo menor a tres días. La biopsia de las adenomegalias confirmó linfoma de células T periférico asociado a infección por virus linfotrópico T humano tipo I-II, presentando una evolución tórpida a pesar del esquema quimioterapéutico.


Tuberculosis is a globally distributed infection with high morbidity and mortality in underdeveloped countries. We present the case of a 55-year-old woman with a 2-month history of cervical lymph nodes, weight loss, and fever with subsequent progressive exertional dyspnea. She was admitted to the emergency department with ventilatory failure and radiological findings compatible with acute respiratory distress syndrome (ARDS) requiring invasive mechanical ventilation. M. tuberculosis infection was proved by a real-time PCR GeneXpert MTB/RIF Ultra and in culture of sputum liquid medium, with growth in less than 3 days. The biopsy of the lymph nodes revealed peripheral T-cell lymphoma associated with infection by human T-lymphotropic virus type I-II, presenting a torpid evolution despite the chemotherapy regimen.

3.
J Extra Corpor Technol ; 55(3): 130-133, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37682211

RESUMO

Extracorporeal Membrane Oxygenation (ECMO) therapy had an important role in the treatment of severe COVID-19 pneumonia, where invasive mechanical ventilation was not enough to provide correct oxygenation to various organ systems. However, there are other extracorporeal technologies, such as the Molecular Absorbent Recirculation System (MARS) and Continuous Renal Replacement Therapy (CRRT), that provide temporal support for any critical patient. The following case describes a 60-year-old man with severe Acute Respiratory Distress Syndrome (ARDS), who needed ECMO therapy. During the critical days of hospitalization, CRRT was used, but a sudden hyperbilirubinemia ensued. Consequently, MARS therapy was initiated; followed by an improvement of bilirubin levels. Additional studies are needed to establish the possible benefits of the combination of MARS therapy and ECMO; however, we detected that concomitantly, there was a decrease in other laboratory parameters such as acute phase reactants. Even though, no change in clinical course was observed, as shown in some studies.


Assuntos
COVID-19 , Terapia de Substituição Renal Contínua , Oxigenação por Membrana Extracorpórea , Pneumonia , Masculino , Humanos , Pessoa de Meia-Idade , SARS-CoV-2 , COVID-19/terapia
4.
J Extra Corpor Technol ; 55(3): 134-137, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37682212

RESUMO

The following case report analyses a patient with extracorporeal membrane oxygenation (ECMO), who suffered from a severe Acute Respiratory Distress Syndrome (ARDS) due to COVID-19 pneumonia. ARDS is defined as a diffuse and inflammatory injury of the lungs; classifying this as severe when the ratio of arterial oxygen tension to a fraction of inspired oxygen (PaO2/FiO2) is equal to or lower than 100 mmHg. To decide if the patient was suitable for the use of ECMO therapy, the ELSO criteria were used; and in this case, the patient matched with the criteria of hypoxemic respiratory failure (with a PaO2/FiO2 < 80 mmHg) after optimal medical management, including, in the absence of contraindications, a trial of prone positioning. During hospitalization, the patient presented a Central Diabetes Insipidus (CDI), probably explained by the damage hypoxia generated on the central nervous system. There are few reports of this complication produced by COVID-19. The case is about a 39-year-old woman, who started with ECMO 6 days after the beginning of Invasive Mechanical Ventilation (IMV), because of a severe ARDS. On the fifth day of ECMO, the patient started with a polyuria of 7 L in 24 h. A series of paraclinical studies were made, but no evidence of central nervous system lesions was found. After treatment with desmopressin was initiated and the ARDS was solved, polyuria stopped; with this, CDI was diagnosed. There are many complications secondary to the evolution of COVID-19 infection, and some of them are not yet well explained.


Assuntos
COVID-19 , Diabetes Insípido Neurogênico , Diabetes Mellitus , Oxigenação por Membrana Extracorpórea , Síndrome do Desconforto Respiratório , Feminino , Humanos , Adulto , COVID-19/complicações , COVID-19/terapia , Poliúria , Oxigênio , Síndrome do Desconforto Respiratório/etiologia , Síndrome do Desconforto Respiratório/terapia
5.
Environ Technol ; : 1-10, 2022 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-36282279

RESUMO

Contaminants from cooling water waste (CWW) generated by industries represent an environmental hazard if discharged into aquatic bodies and soil without treatment. Most treatment strategies are energy-demanding and costly; hence, low-cost and sustainable treatment alternative technologies are needed. The present study proposed cyanobacteria culture as a low-cost biological method to treat cooling water waste (CWW) while simultaneously producing carbohydrates. For this purpose, CWW from a cooling tower was evaluated in different dilutions with domestic wastewater (DW) (DW25% -CWW75%, DW50% -CWW50%, DW25% -CWW75%, DW100%, and CWW100%) (v/v). The CWW provided a high content of inorganic carbon and low content of N and P, which resulted in a high C/N ratio promoting a fast carbohydrate accumulation but low biomass production. In contrast, cultures with higher DW concentrations achieved similar results in 14 days. The best results were obtained with DW25% -CWW75%, achieving up to 52 ± 18% carbohydrate content on day 8, with the highest biomass concentration of 1.7 ± 0.12 g L-1 on day 14. This culture removed >94% of TAN, N-NO3- and P-PO43-, and 84 ± 10.82% of COD. This strategy could be a promising approach to treating CWW and DW from the same industry and producing value-added products and bioenergy.

6.
JACC Case Rep ; 4(20): 1360-1362, 2022 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-36299646

RESUMO

Carcinoid heart disease (CaHD) is part of the carcinoid syndrome. Cardiac involvement is present in 20% to 60% of patients with carcinoid syndrome and is normally from liver metastasis. We report the case of a patient who presented with CaHD disease with an undiagnosed primary tumor or a possible primary liver carcinoid tumor. (Level of Difficulty: Advanced.).

7.
Front Hum Neurosci ; 16: 933559, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36092645

RESUMO

Most clinical neurofeedback studies based on functional magnetic resonance imaging use the patient's own neural activity as feedback. The objective of this study was to create a subject-independent brain state classifier as part of a real-time fMRI neurofeedback (rt-fMRI NF) system that can guide patients with depression in achieving a healthy brain state, and then to examine subsequent clinical changes. In a first step, a brain classifier based on a support vector machine (SVM) was trained from the neural information of happy autobiographical imagery and motor imagery blocks received from a healthy female participant during an MRI session. In the second step, 7 right-handed female patients with mild or moderate depressive symptoms were trained to match their own neural activity with the neural activity corresponding to the "happiness emotional brain state" of the healthy participant. The training (4 training sessions over 2 weeks) was carried out using the rt-fMRI NF system guided by the brain-state classifier we had created. Thus, the informative voxels previously obtained in the first step, using SVM classification and Effect Mapping, were used to classify the Blood-Oxygen-Level Dependent (BOLD) activity of the patients and converted into real-time visual feedback during the neurofeedback training runs. Improvements in the classifier accuracy toward the end of the training were observed in all the patients [Session 4-1 Median = 6.563%; Range = 4.10-27.34; Wilcoxon Test (0), 2-tailed p = 0.031]. Clinical improvement also was observed in a blind standardized clinical evaluation [HDRS CE2-1 Median = 7; Range 2 to 15; Wilcoxon Test (0), 2-tailed p = 0.016], and in self-report assessments [BDI-II CE2-1 Median = 8; Range 1-15; Wilcoxon Test (0), 2-tailed p = 0.031]. In addition, the clinical improvement was still present 10 days after the intervention [BDI-II CE3-2_Median = 0; Range -1 to 2; Wilcoxon Test (0), 2-tailed p = 0.50/ HDRS CE3-2 Median = 0; Range -1 to 2; Wilcoxon Test (0), 2-tailed p = 0.625]. Although the number of participants needs to be increased and a control group included to confirm these findings, the results suggest a novel option for neural modulation and clinical alleviation in depression using noninvasive stimulation technologies.

8.
J Electr Bioimpedance ; 13(1): 132-135, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36694879

RESUMO

It is necessary to evaluate the total deoxyribonucleic acid (DNA) concentration in gene expression assays. The existing techniques require equipment that is expensive for many labs in developing countries. Portable and inexpensive equipment is needed for easy and economical DNA quantification. Electrical bioimpedance spectroscopy (EBiS) is a non-invasive and inexpensive technique for examining the electrical properties of biological materials. The aim of this study was to explore a potential correlation between the measurement of total DNA extracted from human samples by UV-Vis spectrophotometry and EBiS. Hence, after quantifying the total DNA extracted from each sample by UV-Vis spectroscopy, EBiS was recorded and a possible correlation between the two measurements was analyzed. Considering the bioimpedance phase parameter at 5.24 MHz, a significant correlation was found with total DNA, especially when the concentration was below 100 ng/µL (Spearman coefficient = 0.82, p<0.005). Additional experiments are warranted to confirm these findings.

9.
J Infect Dev Ctries ; 15(11): 1597-1602, 2021 11 30.
Artigo em Inglês | MEDLINE | ID: mdl-34898484

RESUMO

INTRODUCTION: COVID-19 was declared a pandemic in March 2020, requiring a comprehensive response from all healthcare systems, including Mexico's. As medical residents' training did not involve epidemic response, we decided to evaluate their level of training on this subject, specifically self-perceived knowledge level and capacity to respond to epidemiological crises. METHODOLOGY: Medical residents from two hospitals belonging to PEMEX (Mexico's state-owned petroleum company) were included in a cross-sectional study. All participants answered a modified version of the survey developed by the University of Lovaina's Center for Research and Education in Emergency Care. Participants were analyzed according to their relevant "clinical" or "surgical" residency tracks. Data were analyzed using through Chi-square tests, t-tests, Mann-Whitney U tests, Kruskal-Wallis tests, and Pearson and Spearman correlation coefficients with significance established at p < 0.05. RESULTS: Of a total of 94 resident participants in this study, 56.7% self-perceived themselves as being poorly prepared to confront the pandemic. Only 25.5% of the participants referred previous experience in medical responses to public health emergencies, and only 35.1% reported ever receiving education on this topic. CONCLUSIONS: Medical residents-who have been involved with caring for victims of the pandemic-are under the general perception that they are not prepared, experienced, or educated enough to respond to such a widespread massive public health emergency.


Assuntos
COVID-19/epidemiologia , Competência Clínica , Internato e Residência , SARS-CoV-2 , Autoimagem , Estudantes de Medicina/psicologia , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Corpo Clínico Hospitalar , México/epidemiologia , Pandemias , Inquéritos e Questionários
10.
Gac Med Mex ; 157(3): 257-262, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34667319

RESUMO

INTRODUCTION: As a result of COVID-19, many hospitals underwent a conversion for the care for this disease. OBJECTIVE: To analyze COVID-19 hospital epidemiological behavior from March to August 2020. METHODS: Through a series of cases, COVID-19 epidemiological behavior at the hospital was analyzed, for which simple case rates, percentages and incidence of COVID-19 per 100 hospital discharges were estimated. RESULTS: Out of 491 subjects who tested positive for SARS-CoV-2, 156 (31.7 %) were hospitalized for clinical data of moderate to severe disease. Average age was 59.1 years; 121 cases (75 %) were discharged due to improvement, and 32 (20.5 %), due to death. Average age of those who died was 69.7 years, and the most affected age group was 60 to 80 years (45.4 %). Calculated lethality was 20.5 per 100 hospital discharges, while that calculated taking into account positive patients (outpatients and hospitalized patients) was 6.5. CONCLUSIONS: COVID-19 epidemiological behavior was similar to that described in other studies; however, lethality and mortality are above national average. The analysis of this and of the factors that favored it in our population is pending.


INTRODUCCIÓN: A consecuencia de COVID-19, numerosos hospitales sufrieron una reconversión para la atención de esta enfermedad. OBJETIVO: Analizar el comportamiento epidemiológico hospitalario de COVID-19 entre marzo y agosto de 2020. MÉTODOS: En una serie de casos se analizó el comportamiento epidemiológico de COVID-19 en un hospital de tercer nivel, para lo cual se estimaron frecuencias simples de casos, porcentajes e incidencia por cada 100 egresos hospitalarios. RESULTADOS: De 491 sujetos con prueba positiva para SARS-CoV-2, 156 (31.7 %) fueron hospitalizados por datos clínicos de enfermedad moderada a grave. La edad promedio fue de 59.1 años; 121 casos (75 %) egresaron por mejoría y 32 (20.5 %), por defunción. El promedio de edad de quienes fallecieron fue de 69.7 años y el grupo etario más afectado fue el de 60 a 80 años (45.4 %). La letalidad calculada fue de 20.5 por 100 egresos hospitalarios, mientras que la calculada tomando en cuenta los pacientes positivos (ambulatorios y hospitalizados) fue de 6.5. CONCLUSIONES: El comportamiento epidemiológico de COVID-19 fue similar al descrito en otros estudios; sin embargo, la letalidad y la mortalidad están por encima de la media nacional. Está pendiente el análisis de estas y de los factores que las favorecieron en nuestra población.


Assuntos
COVID-19/epidemiologia , Mortalidade Hospitalar , Hospitalização/estatística & dados numéricos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , COVID-19/mortalidade , COVID-19/fisiopatologia , Criança , Feminino , Humanos , Incidência , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Pacientes Ambulatoriais , Índice de Gravidade de Doença , Centros de Atenção Terciária , Adulto Jovem
11.
Reumatol Clin (Engl Ed) ; 17(8): 440-446, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34625146

RESUMO

OBJECTIVE: To determine the comorbidities associated with disability in patients with OA in Mexico (2013-2015). MATERIAL AND METHODS: A cross-sectional, retrospective and multicentre IMPACTAR study (n=7703) in Mexican patients (2013-2015). Comorbidities associated with disability were identified in 4971 patients diagnosed with OA from the IMPACTAR registry (n=7073). An adjusted logistic regression analysis was carried out by demographic, economic, clinical and medical variables. RESULTS: Mean age was 63 years; and 75% of the patients were women. Subjects with OA and presence of comorbidities are 42% more likely to develop disabilities than patients without associated comorbidity, considering age, sex, family income, OA diagnosis duration, and education level. The highest rate of people with disability (28.9%) was concentrated in Region 7, which corresponds to Mexico City. There are also significant differences between median family incomes, when the income of persons with disability is under $13 000 (IQR: 9000-16 000) Mexican pesos, compared to patients without disability. Almost half of the subjects (49.6%) reported having at least one comorbidity. Arterial hypertension was the risk factor with a statistically significant difference (32.8%) among those with disability (34.7%). CONCLUSIONS: Programs and interventions for OA patients should take into consideration comorbidity factors, being female, family income, and the region of residence as variables that may increase the possibility of developing an OA-associated disability.


Assuntos
Pessoas com Deficiência , Osteoartrite , Comorbidade , Estudos Transversais , Feminino , Humanos , México/epidemiologia , Pessoa de Meia-Idade , Osteoartrite/epidemiologia , Sistema de Registros , Estudos Retrospectivos
12.
Reumatol. clín. (Barc.) ; 17(8): 440-446, Oct. 2021.
Artigo em Inglês | IBECS | ID: ibc-213342

RESUMO

Objective. To determine the comorbidities associated with disability in patients with OA in Mexico (2013–2015). Material and methods: A cross-sectional, retrospective and multicentre IMPACTAR study (n=7703) in Mexican patients (2013–2015). Comorbidities associated with disability were identified in 4971 patients diagnosed with OA from the IMPACTAR registry (n=7073). An adjusted logistic regression analysis was carried out by demographic, economic, clinical and medical variables. Results: Mean age was 63 years; and 75% of the patients were women. Subjects with OA and presence of comorbidities are 42% more likely to develop disabilities than patients without associated comorbidity, considering age, sex, family income, OA diagnosis duration, and education level. The highest rate of people with disability (28.9%) was concentrated in Region 7, which corresponds to Mexico City. There are also significant differences between median family incomes, when the income of persons with disability is under $13 000 (IQR: 9000–16 000) Mexican pesos, compared to patients without disability. Almost half of the subjects (49.6%) reported having at least one comorbidity. Arterial hypertension was the risk factor with a statistically significant difference (32.8%) among those with disability (34.7%). Conclusions: Programs and interventions for OA patients should take into consideration comorbidity factors, being female, family income, and the region of residence as variables that may increase the possibility of developing an OA-associated disability.(AU)


Objetivo: Determinar las comorbilidades asociadas a la incapacidad en pacientes con osteoartritis (OA) en México (2013-2015). Material y métodos: Estudio IMPACTAR transversal, retrospectivo y multicéntrico (n=7.703) en pacientes mejicanos (2013-2015). Se identificaron las comorbilidades asociadas a la incapacidad en 4.971 pacientes diagnosticados de OA en el registro IMPACTAR (n=7.073). Se realizó un análisis de regresión logística ajustada por variables demográfica, económica, clínica y médica. Resultados: La edad media fue de 63 años, y el 75% de los pacientes eran mujeres. Los sujetos con OA y la presencia de comorbilidades tienen un 42% mayor de probabilidad de desarrollar incapacidades que los pacientes sin comorbilidad asociada, considerando la edad, el sexo familia, los ingresos, la duración del diagnóstico de OA y el nivel educativo. La tasa poblacional con mayor tasa de incapacidad (28,9%) se concentró en la Región 7, que corresponde a Ciudad de México. También existieron diferencias significativas entre los ingresos familiares medios, cuando la renta de las personas con incapacidad se sitúa por debajo de los 13.000$ (RIC: 9.000-16.000) pesos mejicanos, en comparación con los pacientes sin incapacidad. Casi la mitad de los sujetos (49,6%) reportaron tener al menos una comorbilidad. La hipertensión arterial fue el factor de riesgo con diferencia estadísticamente significativa (32,8%) entre aquellas personas con incapacidad (34,7%). Conclusiones: Los programas e intervenciones para pacientes con OA deberían considerar los factores de comorbilidad tales como sexo femenino, ingresos familiares y región de residencia como variables que podrían incrementar la posibilidad de desarrollar una incapacidad asociada a OA.(AU)


Assuntos
Humanos , Masculino , Feminino , Comorbidade , Pessoas com Deficiência , Osteoartrite , Doença Crônica , Artrite , 29161 , Reumatologia , Doenças Reumáticas , Estudos Transversais , Estudos Retrospectivos , México
13.
Pharmacol Res Perspect ; 9(5): e00864, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34523245

RESUMO

Over the last few years, fluoxetine has been one of the most prescribed medications for the treatment of diverse psychiatric conditions in Mexico. Fluoxetine therapeutic effect is consequence of the joint action of the parent drug and its active metabolite, norfluoxetine. However, the clinical efficacy of fluoxetine, can be affected due to diverse factors, such as drug-drug interactions and the large interindividual variability in the pharmacokinetics of this drug. The aim of this study was to determine the factors associated with variability in plasma concentrations of fluoxetine and norfluoxetine and its association with the therapeutic response. Fluoxetine and norfluoxetine plasma concentrations were quantified by liquid chromatography in 81 Mexican patients with mental disorders; 25% of the patients had no medication adherence and 40% were below the reference range of fluoxetine plus norfluoxetine plasma concentrations. The results showed that concentrations can be affected by fluoxetine metabolism caused by CYP2D6 phenotype and the concomitant administration of olanzapine. Furthermore, CYP3A5 and CYP2C19 phenotype were associated with lower anxiety and depression control during treatment with fluoxetine. This study can be a starting point to elucidate the causes of fluoxetine variable response in Mexican patients with mental disorders, as well as to detect and support medication adherence.


Assuntos
Sistema Enzimático do Citocromo P-450/genética , Fluoxetina/farmacocinética , Transtornos Mentais/tratamento farmacológico , Inibidores Seletivos de Recaptação de Serotonina/farmacocinética , Adulto , Antipsicóticos/efeitos adversos , Ansiedade/tratamento farmacológico , Ansiedade/psicologia , Citocromo P-450 CYP2C19/genética , Citocromo P-450 CYP2C19/metabolismo , Citocromo P-450 CYP2D6/genética , Citocromo P-450 CYP2D6/metabolismo , Citocromo P-450 CYP3A/genética , Citocromo P-450 CYP3A/metabolismo , Sistema Enzimático do Citocromo P-450/metabolismo , Depressão/tratamento farmacológico , Depressão/psicologia , Interações Medicamentosas , Feminino , Fluoxetina/análogos & derivados , Fluoxetina/sangue , Fluoxetina/metabolismo , Genótipo , Humanos , Masculino , Adesão à Medicação , Transtornos Mentais/psicologia , México , Pessoa de Meia-Idade , Olanzapina/efeitos adversos , Variantes Farmacogenômicos , Farmacocinética , Inibidores Seletivos de Recaptação de Serotonina/metabolismo , Resultado do Tratamento
14.
Sci Total Environ ; 798: 149227, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34332386

RESUMO

The production of carbohydrate-enriched biomass from waste streams as a sustainable biofuel precursor is a noteworthy endeavor. This study investigates the long-term microalgae cultivated under low domestic wastewater loads and different hydraulic retention times (HRT) in a semi-continuous photobioreactor. The influence of operational conditions, the microalgae interaction with carbon, nutrients availability, and microbial population in terms of carbohydrate content were elucidated. The results revealed that the operation at similar low nutrients and carbon loads maintained at three different hydraulic retention times (HRT) of 10, 8, and 6 days caused different patterns in nutrients uptake and biomass composition. Particularly, the carbohydrate accumulation was greatly influenced by the unbalance in the N:P ratios than complete depletion of the nutrients. Hence, during the period operated at HRT of 10 d, high nutrients removal efficiencies were observed while gradually increasing carbohydrate content up to 57% in dry cell weight (DCW). Afterward, the decrease to 8 and 6 d of HRT showed lower nutrient consumption with depleted alkalinity, reaching an appreciably high carbohydrate accumulation of up to 46%, and 56%, respectively. The biomass concentration decreased in the order of HRT of 10, 8, and 6 days. This study demonstrated that microalgae adapted to low carbon and nutrient loads could still accumulate high carbohydrate at shorter HRT using domestic wastewater as substrate.


Assuntos
Microalgas , Águas Residuárias , Biomassa , Carboidratos , Nitrogênio/análise , Fotobiorreatores
15.
Gac. méd. Méx ; 157(3): 267-272, may.-jun. 2021. graf
Artigo em Espanhol | LILACS | ID: biblio-1346106

RESUMO

Resumen Introducción: A consecuencia de COVID-19, numerosos hospitales sufrieron una reconversión para la atención de esta enfermedad. Objetivo: Analizar el comportamiento epidemiológico hospitalario de COVID-19 entre marzo y agosto de 2020. Métodos: En una serie de casos se analizó el comportamiento epidemiológico de COVID-19 en un hospital de tercer nivel, para lo cual se estimaron frecuencias simples de casos, porcentajes e incidencia por cada 100 egresos hospitalarios. Resultados: De 491 sujetos con prueba positiva para SARS-CoV-2, 156 (31.7 %) fueron hospitalizados por datos clínicos de enfermedad moderada a grave. La edad promedio fue de 59.1 años; 121 casos (75 %) egresaron por mejoría y 32 (20.5 %), por defunción. El promedio de edad de quienes fallecieron fue de 69.7 años y el grupo etario más afectado fue el de 60 a 80 años (45.4 %). La letalidad calculada fue de 20.5 por 100 egresos hospitalarios, mientras que la calculada tomando en cuenta los pacientes positivos (ambulatorios y hospitalizados) fue de 6.5. Conclusiones: El comportamiento epidemiológico de COVID-19 fue similar al descrito en otros estudios; sin embargo, la letalidad y la mortalidad están por encima de la media nacional. Está pendiente el análisis de estas y de los factores que las favorecieron en nuestra población.


Abstract Introduction: As a result of COVID-19, many hospitals underwent a conversion for the care for this disease Objective: To analyze COVID-19 hospital epidemiological behavior from March to August 2020. Methods: Through a series of cases, COVID-19 epidemiological behavior at the hospital was analyzed, for which simple case rates, percentages and incidence of COVID-19 per 100 hospital discharges were estimated. Results: Out of 491 subjects who tested positive for SARS-CoV-2, 156 (31.7 %) were hospitalized for clinical data of moderate to severe disease. Average age was 59.1 years; 121 cases (75 %) were discharged due to improvement, and 32 (20.5 %), due to death. Average age of those who died was 69.7 years, and the most affected age group was 60 to 80 years (45.4 %). Calculated lethality was 20.5 per 100 hospital discharges, while that calculated taking into account positive patients (outpatients and hospitalized patients) was 6.5. Conclusions: COVID-19 epidemiological behavior was similar to that described in other studies; however, lethality and mortality are above national average. The analysis of this and of the factors that favored it in our population is pending.


Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Adulto Jovem , Mortalidade Hospitalar , COVID-19/epidemiologia , Hospitalização/estatística & dados numéricos , Pacientes Ambulatoriais , Índice de Gravidade de Doença , Incidência , Centros de Atenção Terciária , COVID-19/fisiopatologia , COVID-19/mortalidade , México/epidemiologia
16.
Rev Esp Enferm Dig ; 113(8): 624-625, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33569965

RESUMO

In response to the kind letter from Joaquín Cabezas et al., we agree that medical care in the COVID era has radically changed and using new mechanisms in the care of different diseases is undoubtedly now a priority to avoid contagion of both the patient and the medical staff. Although a vaccine could protect the population, there are still many questions to answer. The model we use for the care of patients with a diagnosis of hepatitis C virus (HCV) in Mexico showed great benefits, as in other studies.


Assuntos
COVID-19 , Hepatite C Crônica , Hepatite C , Telemedicina , Antivirais/uso terapêutico , Hepacivirus , Hepatite C/tratamento farmacológico , Hepatite C Crônica/tratamento farmacológico , Humanos , México , SARS-CoV-2
17.
Am J Dermatopathol ; 43(3): 209-212, 2021 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-33464749

RESUMO

ABSTRACT: Cutaneous Kaposi sarcoma (KS) covers a broad spectrum both clinically and pathologically. Some histological patterns of KS may be difficult to recognize and must be differentiated from other vascular neoplasms. We report on a 56-year-old Peruvian man who had been diagnosed with classical KS on the right foot 2 years before the present episode. He presented in our clinic with new lesions on the left foot. Histopathological findings included areas showing epithelioid cells with moderate pleomorphism, growing in solid sheets. Immunohistochemistry showed strong nuclear staining with a granular nuclear staining pattern for human herpesvirus 8 in the epithelioid cells. A diagnosis of epithelioid Kaposi sarcoma was made, which should be considered a new histological variant.


Assuntos
Células Epitelioides/patologia , Segunda Neoplasia Primária/patologia , Sarcoma de Kaposi/patologia , Neoplasias Cutâneas/patologia , Células Epitelioides/virologia , Herpesvirus Humano 8 , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade
18.
Gac Med Mex ; 156(4): 321-327, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32831323

RESUMO

Medical specialties' teaching is an area of health systems that deserves special consideration in light of the lessons learned from influenza and COVID-19; educational programs and implementation of the training strategies that are used must be reevaluated, since the level of training of most specialty students does not allow to consider them as personnel who can face these global problems. The number of specialization courses has exponentially grown, and their main threat is the cancellation or partial execution of their academic programs as a consequence of not implementing functional operational strategies during a contingency.


La enseñanza en las especialidades médicas es un rubro de los sistemas de salud que merece consideraciones especiales de acuerdo con las lecciones aprendidas de la influenza y COVID-19. Deben reevaluarse los programas educativos y las estrategias de capacitación implementadas, ya que la preparación escolar de la mayoría de los alumnos no les permite ser considerados como personal que pueda enfrentar esos problemas globales. Los cursos de especialización han crecido en número, pero su principal amenaza es la suspensión de los programas académicos o que sean parcialmente cubiertos como consecuencia de no implementar estrategias operativas funcionales durante una contingencia.


Assuntos
Educação Médica/métodos , Especialização , Estudantes de Medicina , COVID-19 , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/terapia , Humanos , Influenza Humana/epidemiologia , Influenza Humana/terapia , Pandemias , Pneumonia Viral/epidemiologia , Pneumonia Viral/terapia
19.
Gac. méd. Méx ; 156(4): 317-323, Jul.-Aug. 2020. graf
Artigo em Inglês | LILACS | ID: biblio-1249918

RESUMO

Abstract Medical specialties’ teaching is an area of health systems that deserves special consideration in light of the lessons learned from influenza and COVID-19; educational programs and implementation of the training strategies that are used must be reevaluated, since the level of training of most specialty students does not allow to consider them as personnel who can face these global problems. The number of specialization courses has exponentially grown, and their main threat is the cancellation or partial execution of their academic programs as a consequence of not implementing functional operational strategies during a contingency.


Resumen La enseñanza en las especialidades médicas es un rubro de los sistemas de salud que merece consideraciones especiales de acuerdo con las lecciones aprendidas de la influenza y COVID-19. Deben reevaluarse los programas educativos y las estrategias de capacitación implementadas, ya que la preparación escolar de la mayoría de los alumnos no les permite ser considerados como personal que pueda enfrentar esos problemas globales. Los cursos de especialización han crecido en número, pero su principal amenaza es la suspensión de los programas académicos o que sean parcialmente cubiertos como consecuencia de no implementar estrategias operativas funcionales durante una contingencia.


Assuntos
Humanos , Especialização , Estudantes de Medicina , Educação Médica/métodos , Pneumonia Viral/terapia , Pneumonia Viral/epidemiologia , Infecções por Coronavirus/terapia , Infecções por Coronavirus/epidemiologia , Influenza Humana/terapia , Influenza Humana/epidemiologia , Pandemias , COVID-19
20.
Rev. chil. infectol ; 37(4): 456-460, ago. 2020.
Artigo em Espanhol | LILACS | ID: biblio-1138570

RESUMO

Resumen Existe la percepción general de que los estudiantes de medicina deben ayudar en caso de situaciones de desastre o en contingencias epidemiológicas; aunque es posible que no hayan sido debidamente educados para hacerlo. En últimas fechas, la participación de estudiantes es importante en actividades de capacitación de personal, triage, atención de actividades burocráticas, voluntariado; pero no son considerados como una primera línea de atención en los sitios de desastre o de manejo de pacientes. Se revisa en la literatura médica la percepción de la participación de los estudiantes de medicina en desastres y pandemias y se establecen algunas de las necesidades para su capacitación y enseñanza, para que realmente puedan convertirse en una opción en los momentos de crisis.


Abstract There is a general perception that medical students should help in case of disaster situations or epidemiological contingencies; although, they may not have been properly educated to do so. In recent dates, the participation of students is important in staff training activities, triage, care of bureaucratic activities, volunteering; but they are not considered a first line of care at disaster sites or patient management. The perception of the participation of medical students in disasters and pandemics is reviewed in the literature and some of the needs for their training and teaching are established, so that they can truly become an option in times of crisis.


Assuntos
Humanos , Estudantes de Medicina , Desastres , Triagem , Pandemias
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...