Respiratory Center Function and Its Impact in Obesity Hypoventilation Syndrome Treatment

Introduction: Patients with obesity hypoventilation syndrome (OHS) need treatment with positive pressure either with continuous (CPAP) or double pressure (NIV). The apnea–hypopnea index (AHI) is considered a key data for making therapeutic decisions. We hypothesized that HR may be an useful tool to establish different phenotypes and individualize treatment in patients with OHS. Our objective was to analyze the role of the respiratory center response to hypercapnia (HR) in the adequacy of positive airway pressure therapy. Method: We included subjects with OHS treated with CPAP or NIV according to AHI and baseline pCO2. We analyzed therapeutic effectiveness and treatment changes prioritizing CPAP if AHI>30/h. Therapy was considered adequate if it was effective after two years. HR was measured with the p0.1/pEtCO2 ratio and its capability to select therapy was analyzed. The statistical study was performed by means comparison (Student's t) and multivariate analysis (logistic regression). Results: 67 subjects were included of 68(11) years old, 37 (55%) males, initially 45 (67%) treated with NIV and 22 (33%) with CPAP, one case was excluded and in 25 (38%) the treatment was changed. Finally, CPAP was adequate for 29 subjects (44%) and NIV for 37 (56%). The CPAP group showed AHI 57/h (24) and p0.1/pEtCO2 0.37cmH2O/mmHg (0.23), NIV group AHI 43/h (35) and p0.1/pEtCO2 0.24 (0.15) with p=0.049 and 0.006. In multivariate analysis, p0.1/pEtCO2 (p=0.033) and AHI>30 (p=0.001) were predictors of adequate therapy. Conclusion: Measuring the RH of the respiratory center helps to select the most appropriate treatment for patients with OHS. (AU)

Respiratory Center Function and Its Impact in Obesity Hypoventilation Syndrome Treatment.

INTRODUCTION: Patients with obesity hypoventilation syndrome (OHS) need treatment with positive pressure either with continuous (CPAP) or double pressure (NIV). The apnea-hypopnea index (AHI) is considered a key data for making therapeutic decisions. We hypothesized that HR may be an useful tool to establish different phenotypes and individualize treatment in patients with OHS. Our objective was to analyze the role of the respiratory center response to hypercapnia (HR) in the adequacy of positive airway pressure therapy. METHOD: We included subjects with OHS treated with CPAP or NIV according to AHI and baseline pCO2. We analyzed therapeutic effectiveness and treatment changes prioritizing CPAP if AHI>30/h. Therapy was considered adequate if it was effective after two years. HR was measured with the p0.1/pEtCO2 ratio and its capability to select therapy was analyzed. The statistical study was performed by means comparison (Student's t) and multivariate analysis (logistic regression). RESULTS: 67 subjects were included of 68(11) years old, 37 (55%) males, initially 45 (67%) treated with NIV and 22 (33%) with CPAP, one case was excluded and in 25 (38%) the treatment was changed. Finally, CPAP was adequate for 29 subjects (44%) and NIV for 37 (56%). The CPAP group showed AHI 57/h (24) and p0.1/pEtCO2 0.37cmH2O/mmHg (0.23), NIV group AHI 43/h (35) and p0.1/pEtCO2 0.24 (0.15) with p=0.049 and 0.006. In multivariate analysis, p0.1/pEtCO2 (p=0.033) and AHI>30 (p=0.001) were predictors of adequate therapy. CONCLUSION: Measuring the RH of the respiratory center helps to select the most appropriate treatment for patients with OHS.

Antecedentes personales y vacunales como factores asociados a la infección por SARS-CoV-2 / Personal and vaccination history as factors associated with SARS-CoV-2 infection

Antecedentes y objetivo: El SARS-CoV-2 ha supuesto un importante reto de salud pública. Desde el inicio de la pandemia, se han postulado diferentes comorbilidades que se han asociado con espectros de mayor gravedad y mortalidad. Los objetivos de la presente investigación son: 1) analizar los factores asociados a la infección por SARS-CoV-2 (COVID-19) en un área sanitaria del norte de España; 2) conocer el posible papel de la vacunación antigripal y antineumocócica en el desarrollo de la COVID-19.Materiales y métodosSe ha realizado un estudio de casos y controles de test negativo. Se tuvieron en cuenta variables relacionadas con los antecedentes personales y vacunales. A pesar de que la definición epidemiológica de caso fue variando a lo largo del tiempo, se tuvo como referencia la correspondiente al 31 de enero del 2020 en España. Se efectuó un análisis bivariante y multivariante.ResultadosLa muestra incluyó a 188 pacientes, de los cuales 63 fueron casos y 125 controles. Los resultados muestran que la obesidad aumenta 2,4 veces el riesgo de padecer esta infección (IC 95% 1.301 a 4.521) y los antagonistas de los receptores de la angiotensina II (ARA-2) lo aumentan 2,2 veces (IC 95% 1.256 a 6.982). Por otro lado, la vacunación antineumocócica conjugada de 13 serotipos mostró resultados cercanos a la significación estadística (OR = 0,4; IC 95% 0,170 a 1.006).ConclusionesLa obesidad y el uso de fármacos ARA-2 aumentan el riesgo de la COVID-19. El conocimiento científico sobre los factores asociados a la COVID-19 debe seguir ampliándose. La presente investigación plantea la necesidad de profundizar en el papel de las vacunas sobre esta infección y sus posibles propiedades heterólogas. (AU)

Background and objective: SARS-CoV-2 has been and is a major global Public Health challenge. Since the beginning of the pandemic, different comorbidities have been postulated and associated with spectra of increased severity and mortality. The objectives of this research are: 1) to analyse the factors associated with SARS-CoV-2 infection (COVID-19) in a health area in northern Spain; 2) to understand the possible role of influenza vaccination and pneumococcal vaccination in the development of COVID-19.Materials and methodA test-negative case-control study was conducted. Variables related to personal and vaccination history were considered. Although the epidemiological definition of the case varied over time, the reference definition was that corresponding to 31/01/2020 in Spain. A bivariate and multivariate analysis was performed.ResultsThe sample included 188 patients, of which 63 were cases and 125 controls. The results show that obesity increases the risk 2.4-fold of suffering this infection (IC 95% 1,301-4,521) and ARA-2 increases it 2.2-fold (95% CI 1,256-6,982). On the other hand, anti-pneumococcal vaccination of 13 serotypes showed results close to statistical significance (OR = 0.4; 95% CI 0.170-1,006).ConclusionObesity and the use of ARA-2 increases the risk of COVID-19. Scientific knowledge about factors associated with COVID-19 should be expanded. The authors consider that the present research raises the need further investigate the role of vaccines in this infection and their possible heterologous properties. (AU)

Personal and vaccination history as factors associated with SARS-CoV-2 infection.

BACKGROUND AND OBJECTIVE: SARS-CoV-2 has been and is a major global Public Health challenge. Since the beginning of the pandemic, different comorbidities have been postulated and associated with spectra of increased severity and mortality. The objectives of this research are: 1) to analyse the factors associated with SARS-CoV-2 infection (COVID-19) in a health area in northern Spain; 2) to understand the possible role of influenza vaccination and pneumococcal vaccination in the development of COVID-19. MATERIALS AND METHOD: A test-negative case-control study was conducted. Variables related to personal and vaccination history were considered. Although the epidemiological definition of the case varied over time, the reference definition was that corresponding to 31/01/2020 in Spain. A bivariate and multivariate analysis was performed. RESULTS: The sample included 188 patients, of which 63 were cases and 125 controls. The results show that obesity increases the risk 2.4-fold of suffering this infection (IC 95% 1,301-4,521) and ARA-2 increases it 2.2-fold (95% CI 1,256-6,982). On the other hand, anti-pneumococcal vaccination of 13 serotypes showed results close to statistical significance (OR = 0.4; 95% CI 0.170-1,006). CONCLUSION: Obesity and the use of ARA-2 increases the risk of COVID-19. Scientific knowledge about factors associated with COVID-19 should be expanded. The authors consider that the present research raises the need further investigate the role of vaccines in this infection and their possible heterologous properties.

ANTECEDENTES Y OBJETIVO: El SARS-CoV-2 ha supuesto un importante reto de salud pública. Desde el inicio de la pandemia, se han postulado diferentes comorbilidades que se han asociado con espectros de mayor gravedad y mortalidad. Los objetivos de la presente investigación son: 1) analizar los factores asociados a la infección por SARS-CoV-2 (COVID-19) en un área sanitaria del norte de España; 2) conocer el posible papel de la vacunación antigripal y antineumocócica en el desarrollo de la COVID-19. MATERIALES Y MÉTODOS: Se ha realizado un estudio de casos y controles de test negativo. Se tuvieron en cuenta variables relacionadas con los antecedentes personales y vacunales. A pesar de que la definición epidemiológica de caso fue variando a lo largo del tiempo, se tuvo como referencia la correspondiente al 31 de enero del 2020 en España. Se efectuó un análisis bivariante y multivariante. RESULTADOS: La muestra incluyó a 188 pacientes, de los cuales 63 fueron casos y 125 controles. Los resultados muestran que la obesidad aumenta 2,4 veces el riesgo de padecer esta infección (IC 95% 1.301 a 4.521) y los antagonistas de los receptores de la angiotensina II (ARA-2) lo aumentan 2,2 veces (IC 95% 1.256 a 6.982). Por otro lado, la vacunación antineumocócica conjugada de 13 serotipos mostró resultados cercanos a la significación estadística (OR = 0,4; IC 95% 0,170 a 1.006). CONCLUSIONES: La obesidad y el uso de fármacos ARA-2 aumentan el riesgo de la COVID-19. El conocimiento científico sobre los factores asociados a la COVID-19 debe seguir ampliándose. La presente investigación plantea la necesidad de profundizar en el papel de las vacunas sobre esta infección y sus posibles propiedades heterólogas.

Biopsy of Intrapulmonary Lesions in Lungs with Atelectasis and Pleural Effusion / Biopsia de lesiones intrapulmonares en pulmones con atelectasia y derrame pleural

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[Personal and vaccination history as factors associated with SARS-CoV-2 infection]. / Antecedentes personales y vacunales como factores asociados a la infección por SARS-CoV-2.

BACKGROUND AND OBJECTIVE: SARS-CoV-2 has been and is a major global Public Health challenge. Since the beginning of the pandemic, different comorbidities have been postulated and associated with spectra of increased severity and mortality. The objectives of this research are: 1) to analyse the factors associated with SARS-CoV-2 infection (COVID-19) in a health area in northern Spain; 2) to understand the possible role of influenza vaccination and pneumococcal vaccination in the development of COVID-19. MATERIALS AND METHOD: A test-negative case-control study was conducted. Variables related to personal and vaccination history were considered. Although the epidemiological definition of the case varied over time, the reference definition was that corresponding to 31/01/2020 in Spain. A bivariate and multivariate analysis was performed. RESULTS: The sample included 188 patients, of which 63 were cases and 125 controls. The results show that obesity increases the risk 2.4-fold of suffering this infection (IC 95% 1,301-4,521) and ARA-2 increases it 2.2-fold (95% CI 1,256-6,982). On the other hand, anti-pneumococcal vaccination of 13 serotypes showed results close to statistical significance (OR = 0.4; 95% CI 0.170-1,006). CONCLUSION: Obesity and the use of ARA-2 increases the risk of COVID-19. Scientific knowledge about factors associated with COVID-19 should be expanded. The authors consider that the present research raises the need further investigate the role of vaccines in this infection and their possible heterologous properties.

Pulmonary nodular amyloidosis. A rare cause of multiple pulmonary nodules / Amiloidosis nodular pulmonar, una causa infrecuente de nódulos pulmonares múltiples

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Impacto clínico de una unidad de patología pleural en un hospital de tercer nivel / Clinical Impact of a Pleural Unit in a Tertiary Level Hospital

INTRODUCCIÓN: La enfermedad pleural conlleva un gran número de ingresos y elevadas estancias hospitalarias. Con el fin de mejorar esto, se creó en nuestro hospital una unidad de patología pleural (UPP). Nuestro objetivo es analizar el impacto clínico de dicha unidad. MATERIAL Y MÉTODOS: Estudio prospectivo en el que incluimos a los pacientes ingresados en la UPP del Hospital Universitario Central de Asturias por neumotórax espontáneo primario (NEP), secundario (NES), derrame pleural paraneumónico complicado (DPPC) y derrame pleural maligno (DPM), entre enero de 2015 y diciembre de 2018. Analizamos parámetros descriptivos, estancias medias, reingresos al mes, necesidad de cirugía y, en los DPPC, también la mortalidad hospitalaria. Los datos se compararon con los de los pacientes ingresados por la misma enfermedad en neumología durante los 2 años previos (2013-2014). Describimos además todos los procedimientos realizados en la UPP, tanto ambulatorios como en pacientes ingresados. RESULTADOS: Se incluyeron 741 pacientes. Objetivamos una disminución progresiva de los ingresos totales por enfermedad pleural y de la estancia media (días) en dichas afecciones, excepto en el DPM: NEP de 6,2 a 4,2 (p = 0,004), NES de 13,2 a 8,6 (p = 0,005), DPM de 10,3 a 12,3 (p = 0,05) y DPPC de 18,3 a 11,3 (p = 0,001). Existió una reducción de los reingresos al mes y de la mortalidad hospitalaria por DPPC en el periodo de la UPP (14,9% al 5,5%) (p = 0,021). CONCLUSIONES: La creación de una UPP podría disminuir el número de ingresos innecesarios, favoreciendo una reducción de las estancias medias y, en los DPPC, también la mortalidad hospitalaria

INTRODUCTION: Pleural disease involves a large number of admissions and long hospital stays. In order to improve this situation, a Pleural Unit (PU) was created in our hospital. Our aim was to analyze the clinical impact of this unit. MATERIAL AND METHODS: In this prospective study, we included patients admitted to the PU of the Hospital Universitario Central de Asturias for primary spontaneous pneumothorax (PSP), secondary spontaneous pneumothorax (SSP), complicated parapneumonic pleural effusion (CPPE), and malignant pleural effusion (MPE) between January 2015 and December 2018. We analyzed descriptive parameters, mean length of stay, readmissions at 1 month, need for surgery, and in the CPPE group, in-hospital mortality. The data were compared with those of patients admitted to the respiratory medicine department for the same diseases during the previous two years (2013-2014). We also describe all procedures performed in the PU, in both inpatients and outpatients. RESULTS: A total of 741 patients were included, We observed a progressive decrease in total admissions for pleural diseases and mean length of stay (days) (with the exception of MPE), as follows: PSP: from 6.2 to 4.2 (P = .004); SSP: 13.2 to 8.6 (P = .005), MPE: 10.3 to 12.3 (P = .05); and CPPE: 18.3 to 11.3 (P = .001) There was a reduction in hospital readmissions at 1 month and in in-hospital mortality due to CPPE in the PU period (14.9% to 5.5%) (P = .021). CONCLUSIONS: The creation of a PU could decrease the number of unnecessary admissions, and reduce mean lengths of stay and, in the case of CPPE, in-hospital mortality

Clinical Impact of a Pleural Unit in a Tertiary Level Hospital. / Impacto clínico de una unidad de patología pleural en un hospital de tercer nivel.

INTRODUCTION: Pleural disease involves a large number of admissions and long hospital stays. In order to improve this situation, a Pleural Unit (PU) was created in our hospital. Our aim was to analyze the clinical impact of this unit. MATERIAL AND METHODS: In this prospective study, we included patients admitted to the PU of the Hospital Universitario Central de Asturias for primary spontaneous pneumothorax (PSP), secondary spontaneous pneumothorax (SSP), complicated parapneumonic pleural effusion (CPPE), and malignant pleural effusion (MPE) between January 2015 and December 2018. We analyzed descriptive parameters, mean length of stay, readmissions at 1 month, need for surgery, and in the CPPE group, in-hospital mortality. The data were compared with those of patients admitted to the respiratory medicine department for the same diseases during the previous two years (2013-2014). We also describe all procedures performed in the PU, in both inpatients and outpatients. RESULTS: A total of 741 patients were included, We observed a progressive decrease in total admissions for pleural diseases and mean length of stay (days) (with the exception of MPE), as follows: PSP: from 6.2 to 4.2 (P=.004); SSP: 13.2 to 8.6 (P=.005), MPE: 10.3 to 12.3 (P=.05); and CPPE: 18.3 to 11.3 (P=.001) There was a reduction in hospital readmissions at 1 month and in in-hospital mortality due to CPPE in the PU period (14.9% to 5.5%) (P=.021). CONCLUSIONS: The creation of a PU could decrease the number of unnecessary admissions, and reduce mean lengths of stay and, in the case of CPPE, in-hospital mortality.

"Respiratory pattern" o donde hay patrón... ¿no manda marinero? / "Respiratory Pattern" or Where the Capitan Rules a Sailor has no Sway?

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Respuesta a la hipercapnia en pacientes con síndrome obesidad-hipoventilación en tratamiento con ventilación no invasiva en domicilio / Hypercapnia Response in Patients with Obesity-Hypoventilation Syndrome Treated with Non-Invasive Ventilation at Home

Introducción: En la patogenia del síndrome de obesidad-hipoventilación (SOH) se ha postulado una disfunción del centro respiratorio, que muchas veces precisa la utilización de ventilación no invasiva (VNI) en domicilio para el tratamiento. Nuestro objetivo fue medir el efecto de la VNI en la función del CR en pacientes con SOH y los factores que lo determinan. Métodos: Con un diseño prospectivo de mediciones repetidas se estudió la respuesta a la hipercapnia (RHC) midiendo la pendiente de la relación p01/pEtCO2 en situación basal y tras 6meses de tratamiento con VNI en un grupo de pacientes con SOH. Previamente en un grupo control se estableció un umbral en 0,22cmH2O/mmHg para diferenciar la respuesta óptima (RO) de la respuesta subóptima (RSO) del CR. Resultados: Se incluyeron 36 casos, 19 varones (52%), de 65 (DE: 9) años de edad; un 63% de ellos tenían un p01/pEtCO2 por debajo del valor de referencia. El valor basal de p01/pEtCO2 fue de 0,17 (DE: 0,14) cmH2O/mmHg y tras 6meses de VNI fue de 0,30 (DE: 0,22) cmH2O/mmHg (p=0,011). Tras 6meses de tratamiento con VNI, 12 casos (33%) mantienen una función deprimida de su CR. Conclusión: Un 63% de los pacientes con SOH mostraron disfunción de su CR. La aplicación de VNI mejora la función del CR, aunque no en todos los casos

Introduction: Respiratory center (RC) dysfunction has been implicated in the pathogenesis of obesity-hypoventilation syndrome (OHS), and often requires treatment with home non-invasive ventilation (NIV). Our objective was to measure the effect of NIV on RC function in patients with OHS, and the factors that determine such an effect. Methods: We performed a prospective, repeated measures study to evaluate hypercapnia response (HR) by determining the p01/pEtCO2 ratio slope at baseline and after 6months of treatment with NIV in a group of OHS patients. A threshold of 0.22cmH2O/mmHg had previously been established in a control group, in order to differentiate optimal RC response from suboptimal RC response. Results: A total of 36 cases were included, 19 men (52%) aged 65 (SD 9) years, 63% of whom had p01/pEtCO2 below the reference value. Baseline p01/pEtCO2 was 0.17 (SD: 0.14) cmH2O/mmHg and, after 6 months of NIV, 0.30 (SD: 0.22) cmH2O/mmHg (p=0.011). After 6months of treatment with NIV, depressed RC function persisted in 12 cases (33%). Conclusion: In total, 63% of OHS patients had RC dysfunction. The application of NIV improves RC function but not in all cases

Hypercapnia Response in Patients with Obesity-Hypoventilation Syndrome Treated with Non-Invasive Ventilation at Home. / Respuesta a la hipercapnia en pacientes con síndrome obesidad-hipoventilación en tratamiento con ventilación no invasiva en domicilio.

INTRODUCTION: Respiratory center (RC) dysfunction has been implicated in the pathogenesis of obesity-hypoventilation syndrome (OHS), and often requires treatment with home non-invasive ventilation (NIV). Our objective was to measure the effect of NIV on RC function in patients with OHS, and the factors that determine such an effect. METHODS: We performed a prospective, repeated measures study to evaluate hypercapnia response (HR) by determining the p01/pEtCO2 ratio slope at baseline and after 6months of treatment with NIV in a group of OHS patients. A threshold of 0.22cmH2O/mmHg had previously been established in a control group, in order to differentiate optimal RC response from suboptimal RC response. RESULTS: A total of 36 cases were included, 19 men (52%) aged 65 (SD 9) years, 63% of whom had p01/pEtCO2 below the reference value. Baseline p01/pEtCO2 was 0.17 (SD: 0.14) cmH2O/mmHg and, after 6 months of NIV, 0.30 (SD: 0.22) cmH2O/mmHg (p=0.011). After 6months of treatment with NIV, depressed RC function persisted in 12 cases (33%). CONCLUSION: In total, 63% of OHS patients had RC dysfunction. The application of NIV improves RC function but not in all cases.