Incidence and profile of severe exacerbations of chronic obstructive pulmonary disease due to biomass smoke or tobacco.

INTRODUCTION AND OBJECTIVES: Stable chronic obstructive pulmonary disease (COPD) caused by biomass smoke (B-COPD) has some differences from tobacco-induced-COPD (T-COPD), but acute exacerbations (AECOPD) have not been well characterized in B-COPD. OBJECTIVE: To compare the incidence, characteristics and outcomes of AECOPD in B-COPD with those of T-COPD. METHODS: A retrospective observational study that included consecutive patients seen at a specialized COPD clinic (2008-2021). The incidence of severe AECOPD that required hospital admission was studied. For the first AECOPD, the following variables were recorded: fever, coexistence of pneumonia, purulent sputum, eosinophil count, neutrophil to lymphocyte ratio, hypercapnia, and respiratory acidosis. Outcome variables were intensive care unit (ICU) admission, length of hospital stay, and mortality within 1 month of hospital admission. RESULTS: Of 1060 subjects, 195 (18.4%) belonged to the B-COPD group and 865 (81.6%) to the T-COPD group. During a follow-up of 67.9 (37.8-98.8) months, 75 (38.4%) patients in the B-COPD group and 319 (36.8%) in the T-COPD group suffered at least one severe AECOPD. The only difference between groups was in a higher risk of ICU admission for the T-COPD group. The incidence, characteristics, and the rest of the outcomes of AECOPD were similar for both groups. CONCLUSION: AECOPD are similar events for B-COPD and T-COPD and should be managed similarly.

Evaluation of the multimorbidity network and its relationship with clinical phenotypes in chronic obstructive pulmonary disease: The GALAXIA study.

BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a complex and heterogeneous condition, in which taking into consideration clinical phenotypes and multimorbidity is relevant to disease management. Network analysis, a procedure designed to study complex systems, allows to represent connections between the distinct features found in COPD. METHODS: Network analysis was applied to a cohort of patients with COPD in order to explore the degree of connectivity between different diseases, taking into account the presence of two phenotypic traits commonly used to categorize patients in clinical practice: chronic bronchitis (CB+ /CB- ) and the history of previous severe exacerbations (Ex+ /Ex- ). The strength of association between diseases was quantified using the correlation coefficient Phi (ɸ). RESULTS: A total of 1726 patients were included, and 91 possible links between 14 diseases were established. Although the four phenotypically defined groups presented a similar underlying comorbidity pattern, with special relevance for cardiovascular diseases and/or risk factors, classifying patients according to the presence or absence of CB implied differences between groups in network density (mean ɸ: 0.098 in the CB- group and 0.050 in the CB+ group). In contrast, between-group differences in network density were small and of questionable significance when classifying patients according to prior exacerbation history (mean ɸ: 0.082 among Ex- subjects and 0.072 in the Ex+ group). The degree of connectivity of any given disease with the rest of the network also varied depending on the selected phenotypic trait. The classification of patients according to the CB- /CB+ groups revealed significant differences between groups in the degree of conectivity between comorbidities. On the other side, grouping the patients according to the Ex- /Ex+ trait did not disclose differences in connectivity between network nodes (diseases). CONCLUSIONS: The multimorbidity network of a patient with COPD differs according to the underlying clinical characteristics, suggesting that the connections linking comorbidities between them vary for different phenotypes and that the clinical heterogeneity of COPD could influence the expression of latent multimorbidity. Network analysis has the potential to delve into the interactions between COPD clinical traits and comorbidities and is a promising tool to investigate possible specific biological pathways that modulate multimorbidity patterns.

Evaluación a los dos meses del alta hospitalaria tras la primera ola de COVID-19: presencia de síntomas persistentes / Assessment of hospitalized covid-19 patients two month after discharge: characterization of persistent symptoms

Introduction: a series of symptoms have been reported after COVID-19, which have been encompassed in the so-named “postCOVID syndrome”. PostCOVID syndrome is a heterogeneous disorder with an uncertain pathophysiology. The aim of this study is to describe the characteristics and frequence of symptoms after COVID-19 discharge and to analyze the possible implicated factors. Methods: this is an observational propective study with COVID-19 patients hospitalized from March to April 2020. Patients were assessed in an outpatient clinic two months after discharge, and serological, radiological and laboratory workup was conducted. Previous medical history, length of stay (LOS) and intensive care unit (ICU) admission were recorded. Persistent symptons (PS) were defined as those appearing after the acute infection and present at follow-up. Results: 74 patients were included. Mean age was 66±13 years, and 54.4% patients were men. Six (8.1%) patients needed ICU admission, and median LOS was 8 (6-12) days. Forty (54.8%) patients presented PS, the most frequent being fatigue and dyspnea (20.3% each). 77% patients presented laboratory abnormalities but just in 11 cases (15.1%) were they severe. Ten (13.5%) had radiological abnormalities. 71 (95.9%) had positive IgG serology. There were no differences between patients with and without PS regarding previous medical history or acute infection course. PS patients had a higher heart rate 83 (75-93) vs 76 65-85) bpm; p=0.038) at assessment. Conclusion: symptoms and laboratory abnormalities are frequent two months after COVID-19, although usually mild. No predictors... (AU)

Introducción: se han notificado tras el alta por COVID-19 una serie de síntomas englobados dentro del llamado “síndrome post-COVID”, un cuadro heterogéneo cuya fisiopatología es incierta. Nuestro objetivo es describir las características y frecuencia de síntomas tras el alta y analizar los posibles factores relacionados. Métodos: estudio observacional prospectivo con pacientes ingresados por COVID-19 durante marzo-abril de 2020. Se evaluó en consulta a los dos meses tras el alta con valoración clínica, analítica, serología y radiografía de tórax. Se recogieron los antecedentes, la estancia hospitalaria y la necesidad de UCI. Se definieron síntomas persistentes (SP) como síntomas que aparecieron desde la infección aguda y que se mantenían al seguimiento. Resultados: se revisaron 74 pacientes. La edad media fue 66±13 años, siendo un 51,4% hombres. Seis (8,1%) ingresaron en UCI, y la mediana de estancia fue 8 (6-12) días. Cuarenta (54,8%) presentaron SP, siendo los más frecuentes astenia y disnea (20,3% ambos). Un 77% tenía alteraciones analíticas pero solo en 11 (15,1%) fueron relevantes. Diez (13,5%) presentaban alteraciones radiológicas y 71 (95,9%) tenían IgG positiva. No hubo diferencias entre los pacientes con y sin SP en sus antecedentes o evolución hospitalaria. Los pacientes con SP estaban más taquicárdicos [83 (75-93) lpm vs 76 (65-85) lpm; p=0,038], no existiendo diferencias significativas en el resto de variables... (AU)

Efficacy of mepolizumab in usual clinical practice and characteristics of responders.

BACKGROUND: Severe eosinophilic asthma is a high-burden disease. Mepolizumab has been effective in several randomized clinical trials. However, such success might not be applicable to patients treated in usual clinical practice. The objectives of this article are to evaluate the efficacy of mepolizumab in severe uncontrolled eosinophilic asthma under usual clinical practice, and to determine characteristics associated with the response to this treatment. METHODS: We have conducted a retrospective, multicentre study, including all adult patients with severe uncontrolled eosinophilic asthma in Galicia, Spain, on whom mepolizumab treatment was started before June 2020, at least 6 months before the time of inclusion, and had received at least one dose of the drug. Patient characteristics, clinical data, respiratory function and comorbidities were collected at baseline and at the 6-month-follow-up. Responders and super-responders were defined according to clinical response and requirement of systemic corticosteroids. RESULTS: 122 patients (mean age 58 years old) were included. In the follow-up treatment 6 months later, 75.4% of the patients were well-controlled, displaying a significant reduction in blood eosinophil counts (p < 0.001), hospital admissions and disease exacerbations (p < 0.001), and had their systemic glucocorticosteroid dose significantly reduced (p < 0.001). The inhaled corticosteroid dose was also lowered (p < 0.01) after 6 months of treatment. Around two-thirds had a clinically significant increase in FEV1, 95% of the patients were considered responders and 43% super-responders. CONCLUSION: In routine clinical practice, mepolizumab is effective in patients with severe eosinophilic asthma and it has a good safety profile.

Phenotype-Guided Asthma Therapy: An Alternative Approach to Guidelines.

Despite recent advances in therapy, a substantial proportion of asthmatics remain not well controlled. The classical stepwise approach to pharmacological therapy in adult asthma recommends that treatment is progressively stepped up by increasing the inhaled corticosteroid (ICS) dose or by adding another controller medication- to achieve symptom control and reduce the risk of exacerbations, and stepped down after a period of control. In general, asthma guideline recommendations do not reflect that there are significant differences between ICS in terms of potency. Moreover, they do not consider efficacy and safety separately, incorrectly assuming that "low" and "high" dose categories inevitably correspond with low and high risk of systemic effects. Another point of criticism is the fact that guidelines do not take into account the inflammatory profile of the patient, although substantial groups of patients with mild and moderate asthma have little evidence of "T2-high" inflammation, and by extension are likely to show a poor response to ICS treatment. On the other hand, the latest version of the Global Initiative for Asthma (GINA) equally recommends regular ICS and ICS/formoterol as needed to prevent exacerbations in step 2 patients, without taking into consideration that the therapeutic objectives (exacerbations, symptoms) may differ between individual patients and that different goals may warrant distinct treatment strategies. In this review, we bring to the table several controversial issues concerning asthma treatment and suggest an alternative proposal that takes into consideration the potential side effects of high ICS doses, the patient's inflammatory profile and the therapeutic goals to be achieved.

Validation of the portable Air-Smart Spirometer.

BACKGROUND: The Air-Smart Spirometer is the first portable device accepted by the European Community (EC) that performs spirometric measurements by a turbine mechanism and displays the results on a smartphone or a tablet. METHODS: In this multicenter, descriptive and cross-sectional prospective study carried out in 2 hospital centers, we compare FEV1, FVC, FEV1/FVC ratio measured with the Air Smart-Spirometer device and a conventional spirometer, and analyze the ability of this new portable device to detect obstructions. Patients were included for 2 consecutive months. We calculate sensitivity, specificity, positive and negative predictive value (PPV and NPV) and likelihood ratio (LR +, LR-) as well as the Kappa Index to evaluate the concordance between the two devices for the detection of obstruction. The agreement and relation between the values of FEV1 and FVC in absolute value and the FEV1/FVC ratio measured by both devices were analyzed by calculating the intraclass correlation coefficient (ICC) and the Pearson correlation coefficient (r) respectively. RESULTS: 200 patients (100 from each center) were included with a mean age of 57 (± 14) years, 110 were men (55%). Obstruction was detected by conventional spirometry in 73 patients (40.1%). Using a FEV1/FVC ratio smaller than 0.7 to detect obstruction with the Air Smart-Spirometer, the kappa index was 0.88, sensitivity (90.4%), specificity (97.2%), PPV (95.7%), NPV (93.7%), positive likelihood ratio (32.29), and negative likelihood ratio (0.10). The ICC and r between FEV1, FVC, and FEV1 / FVC ratio measured by the Air Smart Spirometer and the conventional spirometer were all higher than 0.94. CONCLUSION: The Air-Smart Spirometer is a simple and very precise instrument for detecting obstructive airway diseases. It is easy to use, which could make it especially useful non-specialized care and in other areas.

Toxicidad pulmonar inducida por bortezomib / Bortezomib-Induced Lung Toxicity

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Características clínicas y supervivencia de los pacientes nunca fumadores con cáncer de pulmón / Clinical Characteristics and Survival in Never Smokers With Lung Cancer

Introducción y objetivo: Analizar la frecuencia, las características clínicas y la supervivencia de los pacientes con cáncer de pulmón nunca fumadores comparándolas con los pacientes fumadores. Pacientes y métodos: Estudio retrospectivo de pacientes diagnosticados de cáncer de pulmón mediante citohistología de 1999 al 2011. Se estimó la supervivencia por el método de Kaplan-Meier. Para estimar la relación entre las variables se usó la prueba de χ2. Resultados: Se diagnosticaron 2.161 pacientes, 396 (18,3%) nunca fumadores. En este grupo la edad media (± desviación estándar) fue de 72,85 ± 10,52, el 64,6% mujeres y el 35,4% hombres. Según la citohistología, el 55,6% eran adenocarcinoma, el 20,5% epidermoide, el 15% de célula pequeña, el 2,7% de célula grande y el 6,2% otros subtipos. El diagnóstico se hizo en estadio avanzado ( IV ) en el 61,4% de pacientes, y el 14,4% recibieron tratamiento quirúrgico. La supervivencia fue del 12,4%, sin diferencias entre los 2 grupos. En el grupo de nunca fumadores las mujeres tuvieron mejor supervivencia que los hombres. Conclusiones: El 18,3% fueron pacientes nunca fumadores. Se diagnosticaron mayoritariamente en mujeres, estadios avanzados y estirpe histológica adenocarcinoma. No hubo diferencias de supervivencia con el grupo de fumadores

Introduction and objective: To analyze the frequency, clinical characteristics and survival of patients with lung cancer (LC) who have never smoked in comparison to patients who smoke. Patients and methods: A retrospective study in patients diagnosed with LC by cytohistology between 1999 and 2011. Survival was estimated by the Kaplan-Meier method. The χ2 test was used to estimate the relationship between the variables. Results: A total of 2161 patients were diagnosed with LC, 396 (18.3%) of whom had never smoked. The mean age (±standard deviation) in this group was 72.85±10.52; 64.6% were women and 35.4% men. According to the cytohistology, 55.6% were adenocarcinoma, 20.5% squamous cell, 15% small cell, 2.7%large cell and 6.2% other subtypes. The diagnosis was made in advanced stage (IV) in 61.4%, and 14.4% of the patients received surgical treatment. Survival was 12.4%, with no differences between the two groups. In the group of never smokers, women had better survival than men. Conclusions: Of the patients diagnosed with LC, 18.3% had never smoked. It was diagnosed mainly in women, at advanced stages and the most common histological type was adenocarcinoma. There were no survival differences compared to the group of smokers

Clinical characteristics and survival in never smokers with lung cancer.

INTRODUCTION AND OBJECTIVE: To analyze the frequency, clinical characteristics and survival of patients with lung cancer (LC) who have never smoked in comparison to patients who smoke. PATIENTS AND METHODS: A retrospective study in patients diagnosed with LC by cytohistology between 1999 and 2011. Survival was estimated by the Kaplan-Meier method. The χ(2) test was used to estimate the relationship between the variables. RESULTS: A total of 2161 patients were diagnosed with LC, 396 (18.3%) of whom had never smoked. The mean age (±standard deviation) in this group was 72.85±10.52; 64.6% were women and 35.4% men. According to the cytohistology, 55.6% were adenocarcinoma, 20.5% squamous cell, 15% small cell, 2.7% large cell and 6.2% other subtypes. The diagnosis was made in advanced stage (iv) in 61.4%, and 14.4% of the patients received surgical treatment. Survival was 12.4%, with no differences between the two groups. In the group of never smokers, women had better survival than men. CONCLUSIONS: Of the patients diagnosed with LC, 18.3% had never smoked. It was diagnosed mainly in women, at advanced stages and the most common histological type was adenocarcinoma. There were no survival differences compared to the group of smokers.