Vivências de idosos com doença pulmonar crônica em uso de oxigenoterapia domiciliar prolongada no relacionamento amoroso e sexual / Experiences of older adult with chronic pulmonary disease using long-term home oxygen therapy in romantic and sexual relationships

Resumo Objetivo Compreender os significados atribuídos pela pessoa idosa com Doença Pulmonar Obstrutiva Crônica (DPOC) em uso da Oxigenoterapia Domiciliar Prolongada (ODP) referente ao relacionamento amoroso e a prática sexual. Método Estudo qualitativo, no qual foram realizadas sete entrevistas semidirigidas com pacientes com diagnóstico confirmado de DPOC e em uso de ODP, atendidos em serviço ambulatorial. A técnica de análise de conteúdo foi aplicada com o apoio do software WebQDA 2.0®. Os critérios COREQ foram usados ​​para relatar o método e o resultado. Resultados Duas categorias emergiram: 1- Desestabilização no relacionamento amoroso e na vida sexual do usuário de ODP: revelou que a terapia causa perturbação nos relacionamentos, mudança de parceiro depois que foi prescrita a ODP ou até a ideia de procurar uma pessoa extraconjugal. 2- Vivência e significados da DPOC e da oxigenoterapia durante a relação sexual: o sofrimento com as questões fisiológicas, o quanto o paciente sente falta de ar para ter relação sexual e o impacto disso no desempenho e na frequência, diminuindo esses momentos com o parceiro Conclusão A percepção da pessoa idosa com DPOC em uso da ODP indica que a oxigenoterapia impactou sobre a prática sexual e nos relacionamentos amorosos. Ter boa qualidade nos relacionamentos e na prática sexual é condição fundamental para promover a saúde.

Abstract Objective To understand the meanings attributed by older adult with Chronic Obstructive Pulmonary Disease (COPD) using the Long-Term Home Oxygen Therapy (LTOT) regarding romantic relationships and sexual practice. Method Qualitative study in which seven semi-structured interviews were carried out with patients with a confirmed diagnosis of COPD and using LTOT, treated in an outpatient service. The content analysis technique was applied with the support of the WebQDA2.0 software license. COREQ criteria were used to report method and outcome. Results Two categories emerged: 1- Destabilization in the romantic relationship and in the sexual life of the LTOT user: : revealed that therapy causes relationship breakup, change of partner after prescription of the LTOT or even the idea of ​​looking for an extramarital person; 2- Experience and meanings of COPD and oxygen therapy during sexual intercourse: suffering with physiological problems, how much the patient feels short of breath to have sexual intercourse and the impact of this on performance and frequency, reducing these moments with the partner. Conclusion The perception of elderly people with COPD using LTOT indicates that oxygen therapy had an impact on sexual practice and romantic relationships. Having good quality in relationships and sexual practice is a fundamental condition for health promotion.

Aplicación de modelos metabolómicos para la identificación de EPOC en poblaciones expuestas a humo de leña en una comunidad indígena de México / Application of metabolomic models for the identificaron of coPD in populations exposed to wood smoke in an indigenous community in Mexico

Resumen Propósito: Para la evaluación metabólica de la fisiopatología pulmonar se utiliza principalmente el aliento exhalado, el cual ha tomado una gran relevancia como método de diagnóstico no invasivo, de bajo costo, rápido y seguro. El objetivo del presente estudio fue aplicar modelos metabolómicos para la identificación de la Enfermedad Pulmonar Obstructiva Crónica (EPOC) en población vulnerable expuesta a la quema de biomasa en una comunidad indígena de México. Métodos: El estudio se conformó por 142 participantes, 44 pacientes con EPOC asociado a la quema de biomasa, 60 controles y 38 población indígena expuesta a la quema de biomasa (PIE). Las muestras de aliento exhalado se analizaron mediante una nariz electrónica (HERACLES II, Alpha MOS). Con los datos obtenidos se realizó un Análisis Canónico de Coordenadas principales (CAP), que fue utilizado para la predicción de EPOC de la PIE y se determinó la concentración de 1-hidroxipireno (1-OHP) en muestras de orina. Resultados: Se logró identificar un total 59 COVs en las muestras de aliento exhalado de los grupos de estudio, los cuales se utilizaron para establecer un modelo de discriminación entre la huella química del grupo de pacientes con EPOC y el grupo control. El modelo CAP indicó una separación entre las huellas químicas de los pacientes con EPOC y sujetos sanos, con una correcta predicción de 91,34%, con una sensibilidad y especificidad de 93,2 y 96,7% respectivamente. Se encontraron 10 participantes de la PIE con patrón obstructivo y una alta concentración de 1-OHP, determinando que existe una concentración del 1,31 ± 0,67gg/mol de creatinina. Esta concentración se encuentra más de 5 veces arriba de los valores de referencia establecidos en el 2001, que es de 0,24 gg/mol de creatinina. Al comparar los resultados de la huella química de la PIE se posicionó en el grupo de EPOC. Conclusión: Se logró obtener un diagnóstico oportuno en población vulnerable mediante el uso de la metabolómica y se demostró la exposición y los efectos pulmonares en población indígena de San Luis Potosí.

Abstract Purpose: to evaluate metabolic disorders of the pathophysiology of the lung, the exhaled breath is mainly used, this has become highly relevant as a non-invasive, low-cost, fast and safe diagnostic method. The objective of this study is to apply metabolomic models for the identification of Chronic Obstructive Pulmonary Disease (COPD) in a vulnerable population exposed to biomass burning in an indigenous community in Mexico. Methods: The study consisted of 142 participants, 44 patients with COPD associated with biomass burning, 60 controls and 38 indigenous population exposed to biomass burning (PIE). Exhaled breath samples were analyzed using an electronic nose (HERACLES II, Alpha MOS). With the data obtained, a Canonical Analy-sis of Principal Coordinates (CAP) was performed, which was used for the prediction of COPD of IEP and the concentration of 1-hydroxypyrene (1-OHP) in urine samples was determined. Results: A total of 59 VOCs were identified in the exhaled breath samples of the study groups, which were used to establish a discrimination model between the chemical fingerprint of the COPD patient group and the control group. The CAP model indicated a separation between the chemical fingerprints of COPD patients and healthy subjects, with a correct prediction of 91,34%, with a sensitivity and specificity of 93,2 and 96,7%, respectively. 10 IEP participants with an obstructive pattern and a high concentration of 1-OHP were found, determining that there is a concentration of 1,31 ± 0,67gg/mol of creatinine. This concentration is more than 5 times above the reference values established in 2001, which is 0,24 -jg/mol of creatinine. When comparing the results of the Chemical fingerprint of the PIE, it was positioned in the COPD group. Conclusion: It was possible to obtain an opportune diagnosis in a vulnerable population using metabolomics and exposure and pulmonary effects were demonstrated in the indigenous population of San Luis Potosí.

Mechanisms by which exercise training benefits patients with copd mecanismos pelo qual o treinamento de exercício beneficia pacientes com dpoc running title: exercise training / Mecanismos pelos quais o treinamento de exercício beneficia pacientes com o título dpoc running: treinamento de exercício / Mecanismos por los que el entrenamiento de ejercicio beneficia a los pacientes con epoc mecanismos por los que el entrenamiento de ejercicio beneficia a los pacientes con epoc running title: exercise training

The clinical consequences of chronic obstructive pulmonary disease (COPD) include fatigue, dyspnea and progressive impairment of exercise capacity. It also produces significant systemic consequences such as nutritional depletion, physical deconditioning, systemic inflammation, and structural and functional changes in the respiratory and locomotor muscles. Regular exercise provides improvements in the health of patients with stable COPD and can relieve the symptoms, increasing the exercise capacity and improving the quality of life, while also reducing hospitalization and, to some extent, the risk of morbidity and mortality. Training with progressive exercises is associated with metabolic and neurohumoral adaptations, heart rate variability, with adaptations in the pulmonary and skeletal muscles, as well as the inflammatory, cardiovascular and respiratory systems. This review will focus on current knowledge of the mechanisms by which physical training can provide beneficial effects in COPD patients. Results: After analyzing the titles, abstracts and content, out of 500 articles found, 489 were excluded, leaving 11 articles. Studies have shown the beneficial effect of aerobic training on COPD. Conclusion: Physical training should be considered a therapeutic option in patients with COPD, regardless of being terrestrial or aquatic, as it can have beneficial effects on the systems.

As consequências clínicas da doença pulmonar obstrutiva crônica (DPOC) são: fadiga, dispnéia e comprometimento progressivo da capacidade do exercício, além disso, também produz consequências sistêmicas significativas como depleção nutricional, descondicionamento físico, inflamação sistêmica, mudanças estruturais e funcionais de músculos respiratórios e locomotores. O treinamento físico regular traz como beneficíos efeitos da melhoria da saúde em pacientes com DPOC estável e pode aliviar os sintomas, melhorar a capacidade de exercício e a qualidade de vida, reduzir a hospitalização e, em certa medida, o risco de morbi-mortalidade. Já o treinamento com exercícios progressivos está associado a adaptações metabólicas, neurohumorais, variabilidade da frequência cardíaca, inflamatórias, dos músculos pulmonares e esqueléticos, cardiovasculares e respiratórias. Esta revisão enfocará o conhecimento atual dos mecanismos pelos quais o treinamento físico pode ter efeitos benéficos em pacientes com DPOC. Resultados: Após análise dos títulos, resumos e conteúdo, dos 500 artigos encontrados, 489 foram excluídos, restando 11 artigos. Estudos têm demonstrado o efeito benéfico do treinamento aeróbico na DPOC. Conclusão: O treinamento físico deve ser considerado uma opção terapêutica em pacientes com DPOC, independente de ser terrestre ou aquático, pois pode ter efeitos benéficos nos sistemas.

Las consecuencias clínicas de la enfermedad pulmonar obstructiva crónica (EPOC) incluyen fatiga, disnea y deterioro progresivo de la capacidad de ejercicio. También produce importantes consecuencias sistémicas como el agotamiento nutricional, el desacondicionamiento físico, la inflamación sistémica y los cambios estructurales y funcionales en los músculos respiratorios y locomotores. El ejercicio regular proporciona mejoras en la salud de los pacientes con EPOC estable y puede aliviar los síntomas, aumentando la capacidad de ejercicio y mejorando la calidad de vida, al tiempo que reduce la hospitalización y, en cierta medida, el riesgo de morbilidad y mortalidad. El entrenamiento con ejercicios progresivos se asocia a adaptaciones metabólicas y neurohumorales, a la variabilidad de la frecuencia cardíaca, con adaptaciones en los músculos pulmonares y esqueléticos, así como en los sistemas inflamatorio, cardiovascular y respiratorio. Esta revisión se centrará en el conocimiento actual de los mecanismos por los que el entrenamiento físico puede proporcionar efectos beneficiosos en los pacientes con EPOC. Resultados: Tras analizar los títulos, resúmenes y contenido, de los 500 artículos encontrados se excluyeron 489, quedando 11 artículos. Los estudios han demostrado el efecto beneficioso del entrenamiento aeróbico en la EPOC. Conclusiones: El entrenamiento físico debe considerarse una opción terapéutica en pacientes con EPOC, independientemente de que sea terrestre o acuático, ya que puede tener efectos beneficiosos sobre los sistemas.

Chronic Obstructive Pulmonary Disease: The Role of Myocardial Deformation Indices and Right Ventricle Three-Dimensional Echocardiography

Abstract Background: Right ventricular dysfunction is a major complication in chronic obstructive pulmonary disease (COPD) and, despite its prognostic implications, is rarely considered in routine clinical analysis. Objectives: To compare RV function variables with standard and advanced echocardiographic techniques in patients with stable COPD and controls. Methods: Twenty COPD patients classified as GOLD ≥ II (13 men aged 68.4 ± 8.3 years) and 20 matched controls were compared. Myocardial strain/strain rate indices were obtained by tissue Doppler and two-dimensional speckle tracking echocardiography. Right ventricular ejection fraction was obtained with three-dimensional software. Free wall myocardial thickness (FWMT) and tricuspid annular systolic excursion (TAPSE) were also measured. Numerical variables were compared between groups with Student's t-test or the Mann-Whitney test. Associations between categorical variables were determined with Fisher's exact test. P-values < 0.05 were considered statistically significant. Results: All myocardial deformation indices, particularly global longitudinal strain (-17.2 ± 4.4 vs -21.2: ± 4.4 = 0.001) and 3D right ventricular ejection fraction (40.8 ± 9.3% vs 51.1 ± 6.4% p <0.001) were reduced in COPD patients. These patients presented higher right ventricular FWMT and lower TAPSE values than controls. Conclusion: Myocardial deformation indices, either tissue Doppler or speckle tracking echocardiography and 3D right ventricular ejection fraction, are robust markers of right ventricular dysfunction in patients with stable COPD. Assessing global longitudinal strain by speckle tracking echocardiography is a more practical and reproducible method.

Causas asociadas a mortalidad por epoc en el Hospital Clínico Quirúrgico Docente "Dr. Salvador Allende"

RESUMEN Introducción: La enfermedad pulmonar obstructiva crónica (epoc) es una entidad inflamatoria crónica caracterizada por una limitación, parcialmente reversible, del flujo aéreo. Su principal factor de riesgo es el tabaquismo y existen múltiples factores asociados a su elevada letalidad. Objetivo: Identificar los factores asociados con la muerte en pacientes con epoc pertenecientes al Hospital Clínico Quirúrgico Docente "Dr. Salvador Allende", La Habana, Cuba, en el periodo comprendido desde el 1 de enero al 31 de diciembre de 2019. Método: Se realizó un estudio epidemiológico observacional analítico de casos y controles. Los casos fueron los fallecimientos (n=34) con diagnóstico de epoc y los controles fueron los pacientes vivos (n=59) con este diagnóstico confirmado al egreso. Fueron consideradas las variables: edad, sexo, tabaquismo, hipertensión arterial, diabetes mellitus, cor pulmonale crónico, cáncer, grado de epoc, causa de hospitalización, sitio de hospitalización y necesidad de ventilación mecánica invasiva. Se emplearon métodos estadísticos descriptivos, análisis univariado y multivariado para calcular el riesgo, y la regresión logística para valorar los factores de confusión. Resultados: Hubo predominio de pacientes con edad superior a los 65 años y del sexo femenino. Las variables asociadas con la muerte por epoc fueron: comorbilidad por cáncer (OR: 5,1; IC 95 %: 1,2-22,4; p=0,032) y necesidad de ventilación mecánica invasiva (OR: 6,5; IC 95 %: 1,1-38,3; p=0,04). Conclusiones: La comorbilidad por cáncer y la necesidad de ventilación mecánica invasiva se comportaron como factores de riesgo para la mortalidad en pacientes con epoc.

ABSTRACT Introduction: Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory entity characterized by a partially reversible limitation of airflow. Its main risk factor is smoking and there are multiple factors associated with its high mortality. Objective: To identify the factors associated with death in COPD patients belonging to the Hospital Clínico Quirúrgico Docente "Dr. Salvador Allende", in the period from January 1 to December 31, 2019. Method: An analytical observational epidemiological study of cases and controls was carried out. The cases were deaths (n=34) with a diagnosis of COPD, and the controls were living patients (n=59) with this diagnosis confirmed at discharge. Demographic and clinical variables were considered. The variables were considered: age, sex, smoking, arterial hypertension, diabetes mellitus, chronic cor pulmonale, cancer, degree of COPD, cause of hospitalization, site of hospitalization and need for invasive mechanical ventilation. Descriptive statistical methods, univariate and multivariate analysis were used to calculate risk, and logistic regression to assess confounding factors. Results: There was a predominance of patients over 65 years of age, and females. The variables associated with death from COPD were: cancer comorbidity (OR: 5.1; 95% CI: 1.2-22.4; p=0.032) and need for invasive mechanical ventilation (OR: 6.5; CI 95%: 1.1-38.3; p=0.04). Conclusions: Cancer comorbidity and the need for invasive mechanical ventilation behaved as risk factors for mortality in patients with COPD.

RESUMO Introdução: A doença pulmonar obstrutiva crônica (DPOC) é uma entidade inflamatória crônica caracterizada por uma limitação parcialmente reversível do fluxo aéreo. Seu principal fator de risco é o tabagismo e existem múltiplos fatores associados à sua alta letalidade. Objetivo: Identificar os fatores associados ao óbito em pacientes com DPOC pertencentes ao grupo "Dr. Salvador Allende", Havana, Cuba, no período de 1º de janeiro a 31 de dezembro de 2019. Método: Foi realizado um estudo epidemiológico observacional analítico de casos e controles. Os casos eram óbitos (n=34) com diagnóstico de DPOC e os controles eram pacientes vivos (n=59) com esse diagnóstico confirmado na alta. Foram consideradas as variáveis: idade, sexo, tabagismo, hipertensão arterial, diabetes mellitus, cor pulmonale crônico, câncer, grau da DPOC, causa da internação, local da internação e necessidade de ventilação mecânica invasiva. Métodos estatísticos descritivos, análise univariada e multivariada foram usados para calcular o risco e regressão logística para avaliar os fatores de confusão. Resultados: Houve predomínio de pacientes com mais de 65 anos e do sexo feminino. As variáveis associadas ao óbito por DPOC foram: comorbidade por câncer (OR: 5,1; IC 95%: 1,2-22,4; p=0,032) e necessidade de ventilação mecânica invasiva (OR: 6,5; IC 95%: 1,1-38,3; p=0,04). Conclusões: A comorbidade oncológica e a necessidade de ventilação mecânica invasiva se comportaram como fatores de risco para mortalidade em pacientes com DPOC.

Frecuencia de hipertensión pulmonar en pacientes con enfermedad pulmonar obstructiva crónica / Frequency of pulmonary hypertension in patients with chronic obstructive pulmonary disease

Introducción: La enfermedad pulmonar obstructiva crónica es uno de los padecimientos pulmonares más frecuente a nivel mundial. Tiene repercusión sobre la mortalidad, causa importante discapacidad y afecta un número considerable de sujetos en edad productiva. La hipertensión pulmonar es una complicación usual de las enfermedades respiratorias crónicas y en particular de la pulmonar obstructiva crónica. Objetivo: Caracterizar a pacientes con enfermedad pulmonar obstructiva crónica y sospecha de hipertensión pulmonar. Métodos: Se realizó un estudio descriptivo, prospectivo en 50 pacientes atendidos en el Hospital Neumológico Benéfico Jurídico desde noviembre 2016 a enero 2018. Se analizaron variables tales como la edad, el sexo, la prueba de función ventilatoria, la radiografía de tórax, el electrocardiograma y el ecocardiograma. Resultados: De 700 pacientes portadores de enfermedad pulmonar crónica, se sospechó hipertensión pulmonar en 7 por ciento y fue confirmada en 34. Las frecuencias por sexo fueron similares y primaron los mayores de 60 años. El 41,6 por ciento de los pacientes tuvo afectación respiratoria severa, 70,6 por ciento presentó hipertensión pulmonar ligera y 64,7 por ciento tenía disnea grado 3. Los índices kappa entre las técnicas utilizadas para el diagnóstico de la hipertensión pulmonar superaron la cifra de 0,74. Conclusiones: La frecuencia de hipertensión pulmonar en pacientes con enfermedad pulmonar obstructiva crónica fue elevada. Primaron pacientes con afectación severa de la función respiratoria e hipertensión pulmonar ligera. El grado de enfermedad pulmonar obstructiva crónica no determinó la severidad de hipertensión pulmonar. Los mayores valores de concordancia entre las técnicas diagnósticas se obtuvieron para la radiografía y el ecocardiograma(AU)

Introduction: Chronic obstructive pulmonary disease is one of the most frequent, worldwide. It has impact on mortality, causing significant disability and affecting a considerable number of subjects of productive age. Pulmonary hypertension is a common complication of chronic respiratory diseases, particularly chronic obstructive pulmonary disease. Objective: To describe patients with chronic obstructive pulmonary disease and suspected pulmonary hypertension. Methods: A descriptive, prospective study was carried out in 50 patients treated at Benéfico Jurídico Pneumological Hospital from November 2016 to January 2018. Variables such as age, sex, ventilatory function test, chest X-ray, electrocardiogram and the echocardiogram were analyzed. Results: Out of 700 patients with chronic lung disease, pulmonary hypertension was suspected in 7 por ciento and confirmed in 34. The frequencies by sex were similar and those older than 60 years prevailed. 41.6 por ciento of the patients had severe respiratory involvement, 70.6 por ciento had mild pulmonary hypertension and 64.7 por ciento had grade 3 dyspnea. The kappa indices between the techniques used for the diagnosis of pulmonary hypertension exceeded the figure of 0.74. Conclusions: The frequency of pulmonary hypertension in patients with chronic obstructive pulmonary disease was high. Patients with severe impairment of respiratory function and mild pulmonary hypertension predominated. The degree of chronic obstructive pulmonary disease did not determine the severity of pulmonary hypertension. The highest concordance values between diagnostic techniques were obtained for radiography and echocardiography(AU)

Self-reported depression and anxiety among COPD patients. A case-control study

Abstract BACKGROUND: Anxiety and depression are the most prevalent mental disorders worldwide. However, the exact mechanisms linking chronic obstructive pulmonary disease (COPD) with depression and anxiety have not been identified. OBJECTIVES: To compare self-reported depression and anxiety among patients diagnosed with COPD in relation to healthy controls. DESIGN AND SETTING: Case control study at a public hospital institution in Spain. METHODS: We designed a case-control study. Patients were recruited using a consecutive sampling method from a single institution. Two groups were created: COPD and healthy controls. Data on medical history and demographic background were collected from the medical records. Self-reported depression levels were assessed using Beck's depression inventory (BDI). Self-reported anxiety was measured using the State-trait anxiety inventory (STAI). RESULTS: Fifty-two patients with COPD and fifty healthy patients were included in this study. BDI scores were higher for COPD patients (10.23 ± 6.26) than in the control group (5.2 ± 6.56). STAI-state scores were higher for COPD patients (41.85 ± 12.55) than for controls (34.88 ± 9.25). STAI-trait scores were higher for COPD patients (41.42 ± 10.01) than for controls (34.62 ± 9.19). CONCLUSIONS: This study showed that there were higher levels of depression and anxiety among COPD patients than among healthy controls.

Níveis de eosinófilos circulantes e declínio da função pulmonar em doença pulmonar obstrutiva crônica estável: um estudo longitudinal retrospectivo / Circulating eosinophil levels and lung function decline in stable chronic obstructive pulmonary disease: a retrospective longitudinal study

RESUMO Objetivo Discute-se se eosinófilos no sangue (EOS) na doença pulmonar obstrutiva crônica (DPOC) são associados à evolução da doença. O objetivo deste estudo foi avaliar se a contagem diferencial de células brancas do sangue (CBS), os sintomas e o tratamento podem prever o declínio da função pulmonar e as exacerbações em pacientes com DPOC. Métodos Foram retrospectivamente examinados pacientes com DPOC estável submetidos a um monitoramento mínimo de três anos em nossas clínicas ambulatoriais. Coletaram-se informações sobre volumes pulmonares (VEF1 e CVF), contagens total e diferencial de CBS, exacerbações agudas de DPOC (número nos 12 meses anteriores ao início do estudo = EA-DPOC-B; e durante o monitoramento = EA-DPOC-F), status tabagístico e tratamento. Os declínios de VEF1 e EA-DPOC-F foram descritos empregando modelo linear generalizado e regressão binomial negativa com interceptação aleatória de nível 2, respectivamente. Os modelos incluíram contagens de eosinófilo e neutrófilo como potenciais preditores e foram ajustados de acordo com sexo, idade, status tabagístico, EA-DPOC-B, tratamento com broncodilatadores e corticosteroides inalados (CSI). Resultados 68 pacientes foram considerados, dos quais 36 para EOS- (< 170 células/μL, valor da mediana) e 32 para EOS+ (≥ 170 células/μL). ∆VEF1 foi maior em EOS+ do que em EOS- (34,86 mL/ano vs 4,49 mL/ano, p = 0,029). Após o ajuste em relação aos potenciais confundidores, as contagens de eosinófilos (β = 19,4; CI 95% 2,8,36,1; p = 0,022) e CSI (β = -57,7; CI 95% -91,5,-23,9; p = 0,001) foram positivamente e negativamente associadas ao declínio da função pulmonar, respectivamente. Os EOS não foram associados ao número de EA-DPOC-F. Conclusão Em pacientes com DPOC estável, o maior nível de EOS (embora em um intervalo regular) prevê um maior declínio de VEF1, enquanto os CSIs são associados a uma evolução mais lenta da obstrução do fluxo aéreo.

ABSTRACT Objective Whether blood eosinophils (bEOS) in chronic obstructive pulmonary disease (COPD) are associated with disease progression is a topic of debate. We aimed to evaluate whether the differential white blood cell (WBC) count, symptoms and treatment may predict lung function decline and exacerbations in COPD patients. Methods We retrospectively examined stable COPD patients with a minimum follow-up of 3 years at our outpatients' clinic. We collected information about lung volumes (FEV1, FVC), the total and differential WBC count, acute exacerbations of COPD (number in the 12 months before the beginning of the study=AE-COPD-B, and during the follow-up=AE-COPD-F), smoking status and treatment. FEV1 decline and AE-COPD-F were described by using a generalized linear model and a 2-level random intercept negative binomial regression, respectively. The models included eosinophil and neutrophil counts as potential predictors and were adjusted by sex, age, smoking status, AE-COPD-B, treatment with bronchodilators and inhaled corticosteroids (ICS). Results Sixty-eight patients were considered, 36 bEOS- (<170 cells/μL, the median value) and 32 bEOS+ (≥170 cells/μL). ∆FEV1 was higher in bEOS+ than bEOS- (34.86 mL/yr vs 4.49 mL/yr, p=0.029). After adjusting for potential confounders, the eosinophil count was positively (β=19.4; CI 95% 2.8, 36.1; p=0.022) and ICS negatively (β=-57.7; CI 95% -91.5,-23.9; p=0.001) associated with lung function decline. bEOS were not found to be associated with the number of AE-COPD-F. Conclusion In stable COPD patients, a higher level of blood eosinophils (albeit in the normal range) predicts a greater FEV1 decline, while ICS are associated with a slower progression of airflow obstruction.

Importancia de los virus en las exacerbaciones de Enfermedad Pulmonar Obstructiva Crónica (EPOC). ¿Podría cambiar su comportamiento durante la pandemia de SARS-COV-2 (COVID-19)? / Importance of Viruses in Exacerbations of Chronic Obstructive Pulmonary Disease (COPD). Could Change its Behavior During the SARS-COV-2 (COVID-19) pandemic? / Importância dos vírus nas exacerbações da Doença Pulmonar Obstrutiva Crónica (DPOC). Poderia mudar seu comportamento durante a pandemia de SARS-COV-2 (COVID-19)?

Resumen: La pandemia por SARS-COV-2 ha generado muchos interrogantes sobre el comportamiento de enfermedades crónicas. Si bien se conoce que los pacientes con comorbilidades importantes tienen un mayor riesgo de complicaciones, no se conoce el comportamiento de enfermedades, como la enfermedad pulmonar obstructiva crónica (EPOC), en el período de pandemia y cuarentena por COVID-19. En este artículo, se realizó una revisión de la literatura sobre los principales aspectos teóricos para entender las posibles interacciones entre la infección por SARS-COV-2 y pacientes con patología respiratoria como la EPOC. Se revisaron los principales aspectos de las infecciones virales y su fisiopatología en la exacerbación de la enfermedad, sus mecanismos inflamatorios, y las condiciones que pueden aumentar el riesgo de infección y gravedad durante la pandemia por COVID-19. Además, se exploraron los aspectos relacionados a la cuarentena y su posible influencia sobre la exacerbación de la enfermedad. Finalmente, se exploraron los aspectos económicos relacionados con la exacerbación y su manejo asociado a la pandemia.

Abstract: The SARS-COV-2 pandemic has raised many questions about the behavior of chronic diseases. Although it is known that patients with significant comorbidities have a higher risk of complications, the behavior of diseases, such as chronic obstructive pulmonary disease (COPD), during the period of the COVID-19 pandemic and quarantine is not known. In this article, a literature review was carried out on the main theoretical aspects to understand the possible interactions between SARS-COV-2 infection and patients with respiratory pathology such as COPD. The main aspects of viral infections and their pathophysiology in the exacerbation of the disease, their inflammatory mechanisms, and the conditions that can increase the risk of infection and severity during the COVID-19 pandemic were reviewed. In addition, aspects related to quarantine and its possible influence on the exacerbation of the disease were explored. Finally, the economic aspects related to the exacerbation and its management associated with the pandemic were explored.

Resumo: A pandemia de SARS-COV-2 tem gerado muitos questionamentos sobre o comportamento das doenças crônicas. Embora se saiba que pacientes com comorbidades significativas apresentam risco aumentado de complicações, o comportamento de doenças como a doença pulmonar obstrutiva crónica (DPOC) não é conhecido. No período de pandemia e quarentena por COVID-19. Neste artigo, foi realizada urna revisão da literatura sobre os principais aspectos teóricos para compreender as possíveis interações entre a infecção por SARS-COV-2 e pacientes com patologia respiratória, como DPOC. Foram revisados os principais aspectos das infecções virais e sua fisiopatologia na exacerbação da doença, seus mecanismos inflamatórios e as condições que podem aumentar o risco de infecção e gravidade durante a pandemia COVID-19. Além disso, foram explorados aspectos relacionados à quarentena e sua possível influencia na exacerbação da doença. Por fim, foram explorados os aspectos económicos relacionados à exacerbação e sua gestão associada à pandemia.

Hábito de fumar y comorbilidad en pacientes con enfermedad pulmonar obstructiva crónica / Smoking habit and comorbidity in patients with chronic obstructive pulmonary disease

RESUMEN Introducción: La enfermedad pulmonar obstructiva crónica constituye un problema de salud en Cuba y el mundo; su pronóstico está en relación con varios factores. Objetivo: Caracterizar a una serie de pacientes hospitalizados con enfermedad pulmonar obstructiva crónica, según edad, sexo, fenotipo, hábito de fumar y enfermedades comórbidas. Métodos: Se realizó un estudio descriptivo transversal que incluyó a los 296 pacientes que ingresaron en el Servicio de Medicina Interna del Hospital Militar Central "Dr. Carlos J. Finlay" con el diagnóstico de enfermedad pulmonar obstructiva crónica, en el período de dos años. Se determinaron las enfermedades comórbidas, el fenotipo dado por la forma clínica de presentación de los pacientes (A, B, C y D); la edad, sexo, hábito de fumar, tiempo y cantidad que fuma. Se utilizó el índice de comorbilidad de Charlson, para valorar la comorbilidad asociada en la enfermedad. Resultados: El 54 % de los pacientes fueron masculinos, el 96,9 % mayor de 50 años, el 36,1 % del fenotipo C y el 76,6 % fumadores. La hipertensión arterial fue más frecuente en los fenotipos B, C y D, en más del 70 %, la diabetes mellitus en el 73,7 % del fenotipo B y la cardiopatía isquémica en el 61,7 % del fenotipo D. Conclusiones: La mayoría de los pacientes estudiados fueron masculinos, mayores de 50 años, fumadores por más de 10 años y del fenotipo C. Las enfermedades comórbidas más frecuentes fueron la hipertensión arterial, la diabetes mellitus y la cardiopatía isquémica.

ABSTRACT Introduction: Chronic obstructive pulmonary disease constitutes a health problem in Cuba and the world, its prognosis is related to several factors. Objective: To characterize a series of hospitalized patients with chronic obstructive pulmonary disease, according to age, sex, phenotype, smoking habit and comorbid diseases. Method: A descriptive cross-sectional study was carried out that included the 296 patients who were admitted to the Internal Medicine Service of the Central Military Hospital Dr. Carlos J. Finlay with the diagnosis of chronic obstructive pulmonary disease in the period of two years. Comorbid diseases were determined, the phenotype given by the clinical presentation of the patients (A, B, C and D); age, sex, smoking habit, time and amount of smoking. The Charlson comorbidity index was used to assess the associated comorbidity in COPD. Results: 54% of the patients were male, 96,9% older than 50 years, 36,1% phenotype C, and 76,6% smokers. Hypertension was more frequent in phenotypes B, C and D, in more than 70%, diabetes mellitus in 73,7% of phenotype B, and ischemic heart disease in 61,7% of phenotype D. Conclusions: Most of the patients studied were male, older than 50 years, smokers for more than 10 years and phenotype C. The most frequent comorbid diseases were arterial hypertension, diabetes mellitus and ischemic heart disease.

Respiratory symptoms (COPD Assessment Test and modified Medical Research Council dyspnea scores) and GOLD-ABCD COPD classification: the LASSYC study / Sintomas respiratórios (Teste de Avaliação da DPOC e pontuação modificada de dispneia do Conselho de Pesquisa Médica) e classificação GOLD-ABCD COPD: o estudo LASSYC

ABSTRACT Objective To assess the frequency and severity of 24-hour respiratory symptoms according to COPD GOLD-ABCD classification (2017-version), the distribution of the patients with COPD into GOLD categories using mMRC (≥2) or CAT (≥10) scores, and agreement between these cut-off points. Methods In this cross-sectional study (LASSYC study), 24-hour day respiratory symptoms were assessed by the Evaluating Respiratory Symptoms in COPD (E-RS) questionnaire, Nighttime Symptoms of COPD Instrument (NiSCI), Early Morning Symptoms of COPD Instrument (EMSCI), CAT and mMRC scores. Results Among the 734 patients with COPD, 61% were male, age 69.6±8.7 years, FEV1% post-BD 49.1±17.5%, mMRC 1.8±1.0 and CAT 15.3±.8.1. By mMRC 33.7% were group-A, 29.2% group-B, 10.2% group-C and 26.9% group-D. By CAT 22.3% were group-A, 41% group-B, 4.8% group-C and 31.9% group-D. Using the mMRC the severity of E-RS, NiSCI and EMSCI scores increased from group A to D. Using the CAT, the groups B and D had the higher scores. Agreement between mMRC and CAT was 89.5% (Kappa statistics=75.7%). For mMRC score of 2, CAT score of ≥11 showed the maximum Youden's index (1.34). For mMRC score of 1, CAT score of ≥9 and ≥10 showed the maximum Youden's index (1.48). Conclusion GOLD COPD classification by CAT seems to better discriminate 24-hour symptoms. Results do not support the equivalent use of CAT≥10 and mMRC≥2 for assessing symptoms.

RESUMO Objetivo Avaliar a frequência e gravidade dos sintomas respiratórios de 24 horas de acordo com a classificação COPD GOLD-ABCD (versão 2017), a distribuição dos pacientes com DPOC nas categorias GOLD usando escores mMRC (≥2) ou CAT (≥10) e concordância entre esses pontos de corte. Métodos Neste estudo transversal (estudo LASSYC), os sintomas respiratórios diários de 24 horas foram avaliados pelo questionário Avaliando os Sintomas Respiratórios em DPOC (Evaluating Respiratory Symptoms - E-RS), Instrumento de Sintomas Noturnos de DPOC (Nighttime Symptoms of COPD Instrument -NiSCI), Instrumento de Sintomas Matinais de DPOC (Early Morning Symptoms of COPD Instrument - EMSCI), pontuações CAT e mMRC. Resultados Entre os 734 pacientes com DPOC, 61% eram do sexo masculino, idade 69,6 ± 8,7 anos, VEF1% pós-BD 49,1 ± 17,5%, mMRC 1,8 ± 1,0 e CAT 15,3 ± 0,8,1. Por mMRC 33,7% eram do grupo A, 29,2% do grupo B, 10,2% do grupo C e 26,9% do grupo D. Por CAT, 22,3% eram do grupo A, 41% do grupo B, 4,8% do grupo C e 31,9% do grupo D. Usando o mMRC, a gravidade dos escores E-RS, NiSCI e EMSCI aumentou do grupo A para D. Usando o CAT, os grupos B e D tiveram os escores mais altos. A concordância entre mMRC e CAT foi de 89,5% (estatística Kappa = 75,7%). Para a pontuação mMRC de 2, a pontuação CAT ≥11 mostrou o índice de Youden máximo (1,34). Para a pontuação mMRC de 1, a pontuação CAT ≥9 e ≥10 mostrou o índice de Youden máximo (1,48). Conclusão A classificação GOLD COPD por CAT parece discriminar melhor os sintomas de 24 horas. Os resultados não suportam o uso equivalente de CAT≥10 e mMRC≥2 para avaliação dos sintomas.

Desfechos da terapia manual sobre a biomecânica da deglutição em indivíduos com DPOC / Outcomes of manual therapy on the biomechanics of swallowing in individuals with COPD

RESUMO Objetivo Diversos comprometimentos da deglutição têm sido relatados em indivíduos com doença pulmonar obstrutiva crônica (DPOC), tendo como causa a desvantagem mecânica da musculatura respiratória devido à hiperinsuflação. Dentre as estratégias terapêuticas, até o momento, não foram encontrados relatos na literatura sobre o uso da terapia manual (TM) no manejo dos transtornos da deglutição nesta população. O objetivo do estudo foi verificar os desfechos de um programa de TM sobre a biomecânica da deglutição de indivíduos com DPOC. Método Foram avaliados 18 indivíduos com idade média 66,06±8,86 anos, 61,1% (11) homens e VEF1%médio 40,28±16,73 antes e após-programa de TM. As medidas analisadas foram: tempo de trânsito oral, tempo de trânsito faríngeo (TTF), número de deglutições, resíduos em valéculas (VL) e seios piriformes, penetração/aspiração e excursão hiolaríngea na deglutição das consistências líquida e pastosa. Resultados Houve diferença significativa no TTF (p=0,04), resíduos em VL (p=0,03), elevação máxima do hioide (p=0,003) e deslocamento do hioide (p=0,02) na deglutição da consistência pastosa. Na consistência líquida apenas redução de resíduos em VL (p=0,001). Conclusão O programa de TM interferiu na biomecânica da deglutição de indivíduos DPOC demonstrada pela redução do TTF, resíduos em VL e maior elevação e deslocamento do hioide na consistência pastosa. Na consistência líquida houve redução de resíduos em VL.

ABSTRACT Purpose Several swallowing disorders have been reported in chronic obstructive pulmonary disease (COPD) patients due to the mechanical disadvantage of the respiratory muscles caused by hyperinflation. To date, no reports have been found in the literature among the therapeutic strategies on the use of manual therapy (MT) to manage swallowing disorders in COPD. The aim of the study was to verify the outcomes of a TM program on the biomechanics of swallowing of individuals with COPD. Methods 18 individuals with a mean age of 66.06 ± 8.86 years, 61.1% (11) men, and a FEV1% mean of 40.28 ± 16.73 were evaluated before and after TM. The measures analyzed were: oral transit time, pharyngeal transit time (PTT), number of swallows, vallecular (VL) residue and pyriform sinuses, penetration/aspiration and hyolaryngeal excursion in liquid and pasty consistencies. Results A significant difference was found in PTT (p=0.04), VL residue (p=0.03), maximal hyoid elevation (p=0.003), and displacement of hyoid (p=0.02) in the pasty consistency. In the liquid consistency, we found a decrease in VL residue (p=0.001). Conclusion The MT program influenced the swallowing biomechanics of COPD patients demonstrated by a reduction in PTT and VL residue and increased hyoid elevation and displacement in the pasty consistency. In the liquid consistency, a decrease in VL residue was found.

Impact of chronic obstructive pulmonary disease on linear and nonlinear dynamics of heart rate variability in patients with heart failure

The objective of this study was to investigate the impact of chronic obstructive pulmonary disease (COPD)-heart failure (HF) coexistence on linear and nonlinear dynamics of heart rate variability (HRV). Forty-one patients (14 with COPD-HF and 27 HF) were enrolled and underwent pulmonary function and echocardiography evaluation to confirm the clinical diagnosis. Heart rate (HR) and R-R intervals (iRR) were collected during active postural maneuver (APM) [supine (10 min) to orthostasis (10 min)], respiratory sinus arrhythmia maneuver (RSA-M) (4 min), and analysis of frequency domain, time domain, and nonlinear HRV. We found expected autonomic response during orthostatic changes with reduction of mean iRR, root mean square of successive differences between heart beats (RMSSD), RR tri index, and high-frequency [HF (nu)] and an increased mean HR, low-frequency [LF (nu)], and LF/HF (nu) compared with supine only in HF patients (P<0.05). Patients with COPD-HF coexistence did not respond to postural change. In addition, in the orthostatic position, higher HF nu and lower LF nu and LF/HF (nu) were observed in COPD-HF compared with HF patients. HF patients showed an opposite response during RSA-M, with increased sympathetic modulation (LF nu) and reduced parasympathetic modulation (HF nu) (P<0.05) compared with COPD-HF patients. COPD-HF directly influenced cardiac autonomic modulation during active postural change and controlled breathing, demonstrating an autonomic imbalance during sympathetic and parasympathetic maneuvers compared with isolated HF.

How are COPD. AR smokers? Smoking Characteristics of Populations With and Without COPD / ¿Cómo son los fumadores del EPOC. AR? Características de tabaquismo en población con y sin EPOC

Introduction: The COPD.AR Study was conducted between 2014 and 2016 in Argentina to determine the prevalence of COPD in the country. This work was carried out to compare the smoking characteristics of smokers with and without COPD of said study, to know how many of them received medical advice, the characteristics of their previous attempts to quit and their exposure to secondhand tobacco smoke. Materials and Methods: The association between smoking characteristics and COPD was evaluated by Odds Ratio, its 95% confidence interval and p value corresponding to the hypothesis test, using the chi square technique. Results: We included 3469 surveys of subjects older than 39 years, 42.2% men. 70.7% were current or former smokers and 53.3% had spirometric characteristics of COPD. 34.7% are current smokers, 73.4% out of which think about quitting; 64% received advice about it and only 7.3% reported having used some treatment. 40.2% of the respondents reported exposure to environmental smoke, and 56.1% reported occupational exposure to tobacco smoke. The majority of COPD.AR smokers smoke less than 20 cigarettes per day; there is a higher prevalence of COPD in men and a higher percentage of never smokers with COPD in women. A high percentage thinks of quitting smoking, a little lower among patients with COPD, who had more previous attempts to quit. Almost half of the subjects did not receive any medical advice and a very low percentage used drugs to quit. There is high exposure to secondhand smoke in homes and workplaces. Conclusions: COPD.AR smokers smoke less than 20 cigarettes a day; there are more men, a high percentage want to quit and very few receive medical advice or drugs.

Screening tool for restrictive and obstructive ventilatory abnormalities in a population-based survey

Abstract Background: A 6 s spirometry with an inexpensive pocket spirometer efficiently selects individuals for a diagnostic-quality spirometry for airflow limitation, but could also be useful to identify individuals with a restrictive pattern. Objectives: We evaluated an inexpensive simplified spirometer (chronic obstructive pulmonary disease [COPD]-6) as a screening tool to identify spirometric abnormalities. Methods: A population-based survey in Mexico City, with 742 participants performing pre- and post-BD spirometry and a three-maneuver 6 s spirometry (pre-BD) with a COPD-6. We evaluated forced expiratory volume in 1 s (FEV1), FEV6, and FEV1/FEV6 from the COPD-6, crude and expressed as the percentage of predicted (%P), to discriminate post-bronchodilator airflow obstruction (FEV1/forced vital capacity [FVC] <5th percentile) or restriction (FVC or FEV1 <5th percentile with normal FEV1/FVC) through receiver operating characteristics and their area under the curve (AUC). Results: FEV1%P was the best predictor to identify pre- and post-BD ventilatory abnormalities (best cutoff point 87%P, AUC 92% for restrictive pattern, 89% for obstructive pattern, and 91% for any spirometric abnormality). Deriving to clinical spirometry only those with <87%P (26% of the sample) missed only 12% of spirometric abnormalities most of the latter mild. Conclusions: An FEV1 <87%P from a pre-BD 6 s spirometry correctly identified individuals with spirometric ventilatory defects, either obstructive or restrictive.

Epidemiology of Chronic Obstructive Pulmonary Disease in Brazil: a systematic review and meta-analysis / Epidemiologia da Doença Pulmonar Obstrutiva Crônica no Brasil: uma revisão sistemática e metanálise

Abstract Chronic Obstructive Pulmonary Disease (COPD) is among the leading causes of morbidity and mortality in developing countries; however, few systematic reviews are available in the literature. This review examines the prevalence of COPD in the Brazilian population. For this purpose, a systematic review and meta-analysis was conducted of epidemiological observational studies indexed in the databases PubMed, Cochrane, Ovid, Scopus, ScienceDirect, SciELO, Lilacs, and Google Scholar published up to May 2018. The prevalence was estimated using a random effects model. Of the 1,182 articles identified, 12 were eligible. The prevalence of COPD in Brazil was 17% (95%CI: 13-22; I2 = 94%) and the region with the highest prevalence of COPD was the Center-western region (25%), followed by the Southeastern region (23%). The Southern region had the lowest prevalence among the studies (12%). We found that Brazil has a high occurrence of COPD, higher than the estimates of Latin American and world population Hence, additional studies are necessary to support intervention strategies, as well as formulation of specific public health policies to control and prevent COPD.

Resumo A Doença Pulmonar Obstrutiva Crônica (DPOC) encontra-se entre as principais causas de morbidade e mortalidade em países em desenvolvimento, contudo, poucos estudos de revisão sistemática estão disponíveis na literatura. Neste sentido, sumarizamos a prevalência de DPOC na população brasileira. Para tanto, foi realizada revisão sistemática e metanálise de estudos epidemiológicos observacionais indexados nas bases de dados PubMed, Cochrane, Ovid, Scopus, ScienceDirect, SciELO, Lilacs, Google Scholar, publicados até maio de 2018. As prevalências foram estimadas utilizando modelo de efeitos aleatórios. Identificaram-se 1.182 e 12 artigos foram elegíveis. A prevalência de DPOC no Brasil foi de 17% (IC95%: 13-22; I2 = 94%) entre adultos maiores de 40 anos e a região de maior prevalência de DPOC é o Centro-Oeste (25%), seguida pela Região Sudeste (23%). A Região Sul registrou a menor prevalência entre os estudos (12%). Conclui-se que o Brasil apresenta elevada ocorrência de DPOC. Desta forma, estudos adicionais são necessários para subsidiar estratégias de intervenção, bem como formulação de políticas públicas de saúde especificas voltadas ao controle e prevenção da DPOC.

Comportamiento clínico y gasométrico en falla respiratoria aguda tratada con cánula nasal de alto flujo / Clinical and gasometric behavior in acute respiratory failure treated with a high-flow nasal cannula

Introducción: La cánula nasal de alto flujo en adultos ofrece un tratamiento alternativo a la oxigenoterapia convencional. Objetivo: Establecer el comportamiento clínico y gasométrico de pacientes con falla respiratoria aguda que habitan a 2.600 msnm, tratados con cánula nasal de alto flujo en cuidado intensivo adulto. Materiales y métodos: Estudio piloto cuasi experimental pretest-postest intrasujeto, tamaño de muestra 14 pacientes calculado a través de Epidat. Tipo de muestreo no probabilístico por conveniencia, durante catorce meses. Resultados: El 78% de los pacientes fueron mujeres, la edad promedio fue 68 años, y el diagnóstico principal fue enfermedad pulmonar obstructiva crónica (EPOC) en el 71,42% de los casos. Se administró un flujo de oxígeno promedio de 30 Lt/min para pacientes con (EPOC), para el resto de diagnósticos se programaron flujos mayores. El trabajo respiratorio disminuyó posterior al uso de cánula nasal de alto flujo, la presión arterial de oxígeno mejoró paulatinamente en pacientes con falla hipoxémica y el índice de oxigenación incrementó progresivamente en los dos tipos de falla respiratoria. Conclusiones: La cánula nasal de alto flujo es una opción terapéutica útil en el manejo de la falla respiratoria aguda a 2.600 msnm, permitiendo mejoría de la oxigenación y disminución del trabajo respiratorio.

Introduction: High-flow nasal cannula offers an alternative treatment approach to conventional oxygen therapy in adults. Objective: To establish the clinical and gasometric behavior of patients with acute respiratory failure who live at 2,600 m.a.s.l. and are treated with high-flow nasal cannula in an adult intensive care unit. Materials and methods: Quasi-experimental pilot study with a pretest-posttest within-subject design and a sample size of 14 patients calculated through Epidat. A non-probabilistic convenience sampling was conducted for fourteen months. Results: 78% of the patients were women and their average age was 68 years. Chronic Obstructive Pulmonary Disease (COPD) was diagnosed in 71.42% of the cases. An oxygen flow rate of 30 L/min was administered to patients with Chronic Obstructive Pulmonary Disease, while higher rates were used for the rest of the diagnoses. Nasal cannula treatment led to (i) a decreased respiratory function, (ii) a gradually improved arterial blood pressure in patients with hypoxemic failure, (iii) and a progressively increased oxygenation rate. Conclusions: High-flow nasal cannula is a useful therapeutic option in the management of patients with acute respiratory failure living at 2,600 m.a.s.l. because it improves oxygenation and reduces respiratory function.

FEV1/FEV6 y FEV6 una alternativa para FEV1/FVC y FVC en la detección de obstrucción de vías respiratorias / FEV1/FEV6 and FEV6 an alternative for FEV1/FVC and FVC in the detection of airway obstruction

INTRODUCCIÓN: el objetivo de este estudio fue verificar si los puntos de corte fijos y el límite inferior de lo normal (LLN) para el volumen espiratorio forzado en un segundo (FEV1) y el volumen espiratorio forzado en 6 segundos (FEV6) FEV1/FEV6 y el FEV6 son una medida alternativa para el FEV1 y la capacidad vital forzada (FVC), FEV1/FVC y la FVC en la detección de la enfermedad pulmonar obstructiva crónica (EPOC), en una muestra de pacientes del oriente boliviano. MÉTODOS: se analizaron un total de 92 pruebas espirométricas, 66 varones y 26 mujeres con riesgo de EPOC. La población del estudio incluyó a residentes de la ciudad de Santa Cruz de la Sierra-Bolivia (ciudad cosmopolita) de 35 a 90 años de edad. RESULTADOS: la sensibilidad y la especificidad fueron del 97,0% y el 96,9%, respectivamente, cuando se compararon los valores de corte fijos de FEV1/FEV6 de 0,73 con los de FEV1/FVC < 0,7 como regla estándar, según las recomendaciones del global obstructive lung diseases (GOLD) para detectar la obstrucción de las vías respiratorias. La sensibilidad y la especificidad fueron de 93,4% y 81,2%, respectivamente, cuando el LLN de FEV1/FVC y FEV1/FEV6 fueron utilizados. CONCLUSIONES: en conclusión, el FEV6 es un sustituto válido de la CVF para detectar la obstrucción de las vías respiratorias, ya sea utilizando puntos de corte fijos o el LLN. Se necesitan más estudios para verificar estos resultados en una población más grande y para establecer los valores predictivos espirométricos locales.

INTRODUCTION: the aim of this study was to verify if fixed cut-off points and lower limit of normal (LLN) for forced expiratory volume in one second (FEV1)/FEV6 and FEV6 as an alternative for FEV1/forced vital capacity (FVC) and FVC are valid for the detection of obstructive lung disease in a sample of Bolivian subjects. METHODS: a total of 92 spirometric consecutive tests from subjects, 66 males and 26 females at risk for COPD were analyzed. The study population included residents of city Santa Cruz de la Sierra, (Bolivia) aged from 35 to 90 yrs., from various ethnical origins (cosmopolitan city). RESULTS: sensibility and specificity were 97.0% and 96.9%, respectively when fixed cut-off values of FEV1/FEV6 of 0.73 was compared to FEV1/FVC<0.7 as standard, according to GOLD recommendations to detect airway obstruction. Sensibility and specificity were 100% and 89.5%, respectively when LLN of FEV1/FVC and FEV1/FEV6 were used. CONCLUSIONS: in conclusion, FEV6 is a valid surrogate for FVC to detect airway obstruction, either using fixed cut-off points or LLN. Further study is needed to verify these results in a larger population and to establish local spirometric predicted values

Is it possible to reverse frailty in patients with chronic obstructive pulmonary disease?

In recent years, frailty has attracted increasing attention from clinicians and health care workers. The influence of frailty on the elderly, especially those with chronic diseases of the respiratory system, is highly significant. Frailty is particularly more common in patients with chronic obstructive pulmonary disease (COPD). Frailty and COPD share many risk factors and pathophysiological mechanisms. As a comprehensive interventional method for chronic respiratory diseases, pulmonary rehabilitation is an important basic measure for the management of patients with COPD. Frailty in these patients can be reversed using pulmonary rehabilitation by targeting five components of the frailty phenotype at the entry point. The present review discusses the benefits of pulmonary rehabilitation in patients with COPD complicated by frailty and provides a theoretical basis for pulmonary rehabilitation treatment in this population. In addition, the timing of pulmonary rehabilitation is also addressed, with the prefrail stage being the "golden" period. The implementation of pulmonary rehabilitation must vary among individuals, and individualized treatment strategies will help maximize benefits.

Disfagia orofaríngea e a frequência de exacerbações em pacientes com Doença Pulmonar Obstrutiva Crônica com fenótipo exacerbador / Oropharyngeal dysfunction and frequency of exacerbation in Chronic Obstructive Pulmonary Disease patients with exacerbating phenotype

RESUMO Objetivo Avaliar se existe associação entre a presença de disfagia orofaríngea e a frequência de exacerbações em pacientes com doença pulmonar obstrutiva crônica (DPOC). Métodos Estudo transversal, para o qual foram recrutados pacientes com DPOC (Volume expiratório forçado no 1º segundo [VEF1]/Capacidade vital forçada [CVF] <0,7 após uso de broncodilatador), sem exacerbação dos sintomas nas últimas seis semanas, que realizavam acompanhamento ambulatorial e responderam ao questionário de autoavaliação para risco de disfagia. Além disso, foram submetidos à avaliação clínica e videofluoroscópica da deglutição. Resultados Vinte e sete pacientes com diagnóstico de DPOC responderam ao questionário de autoavaliação e realizaram a avaliação clínica da deglutição. Dezoito (66,7%) foram submetidos à avaliação instrumental por meio do exame de videofluoroscopia. A média de idade dos pacientes avaliados foi de 62,7 anos, sendo a maioria mulheres (63%), e mais da metade dos pacientes (70,4%) possuía fenótipo exacerbador. Observou-se associação significativa (p=0,039) entre os pacientes com diagnóstico de disfagia e o número de exacerbações no último ano. Conclusão A presença da disfagia orofaríngea deve ser considerada nos pacientes portadores de DPOC que apresentam o fenótipo exacerbador.

ABSTRACT Purpose To assess whether there is an association between the presence of oropharyngeal dysphagia and the frequency of exacerbations in patients with chronic obstructive pulmonary disease (COPD). Methods This is a cross-sectional study. Patients with COPD (forced expiratory volume in the first second [FEV1] / forced vital capacity [FVC] <0.7 after bronchodilator use) were recruited, with no exacerbation of symptoms in the last six weeks, who underwent outpatient follow-up and answered the questionnaire of self-assessment for risk of dysphagia. In addition, they underwent clinical and videofluoroscopic evaluation of swallowing. Results Twenty-seven patients diagnosed with COPD answered the self-assessment questionnaire and underwent the clinical evaluation of swallowing. Eighteen (66.7%) underwent instrumental evaluation through the videofluoroscopy exam. The mean age was 62.7 years, with the majority of females (63%) and more than half of patients (70.4%) having an exacerbator phenotype. A significant association (p = 0.039) was observed between patients diagnosed with dysphagia and the number of exacerbations in the last year. Conclusion The presence of oropharyngeal dysphagia should be considered in patients with COPD presenting an exacerbator phenotype.