Preliminary experience on the safety and tolerability of mechanical "insufflation-exsufflation" in subjects with artificial airway.

BACKGROUND: Catheter suctioning of respiratory secretions in intubated subjects is limited to the proximal airway and associated with traumatic lesions to the mucosa and poor tolerance. "Mechanical insufflation-exsufflation" exerts positive pressure, followed by an abrupt drop to negative pressure. Potential advantages of this technique are aspiration of distal airway secretions, avoiding trauma, and improving tolerance. METHODS: We applied insufflation of 50 cmH2O for 3 s and exsufflation of - 45 cmH2O for 4 s in patients with an endotracheal tube or tracheostomy cannula requiring secretion suctioning. Cycles of 10 to 12 insufflations-exsufflations were performed and repeated if secretions were aspirated and visible in the proximal artificial airway. Clinical and laboratory parameters were collected before and 5 and 60 min after the procedure. Subjects were followed during their ICU stay until discharge or death. RESULTS: Mechanical insufflation-exsufflation was applied 26 times to 7 male and 6 female subjects requiring suctioning. Mean age was 62.6 ± 20 years and mean Apache II score 23.3 ± 7.4 points. At each session, a median of 2 (IQR 1; 2) cycles on median day of intubation 11.5 (IQR 6.25; 25.75) were performed. Mean insufflation tidal volume was 1043.6 ± 649.9 ml. No statistically significant differences were identified between baseline and post-procedure time points. Barotrauma, desaturation, atelectasis, hemoptysis, or other airway complication and hemodynamic complications were not detected. All, except one, of the mechanical insufflation-exsufflation sessions were productive, showing secretions in the proximal artificial airway, and were well tolerated. CONCLUSIONS: Our preliminary data suggest that mechanical insufflation-exsufflation may be safe and effective in patients with artificial airway. Safety and efficacy need to be confirmed in larger studies with different patient populations. TRIAL REGISTRATION: EudraCT 2017-005201-13 (EU Clinical Trials Register).

Benefits of Long-Term Pulmonary Rehabilitation Maintenance Program in Patients with Severe Chronic Obstructive Pulmonary Disease. Three-Year Follow-up.

RATIONALE: In chronic obstructive pulmonary disease (COPD), the benefits of pulmonary rehabilitation (PR) tend to wane over time. Whether maintenance techniques may help sustain the benefits achieved after completion of the initial PR program remains controversial. OBJECTIVES: To determine whether a long-term (3-yr) maintenance program after PR preserves the short-term effects on outcomes in patients with COPD. METHODS: This was a multicenter prospective randomized trial including 143 patients with moderate-severe COPD, with 3 years of PR maintenance following an 8-week outpatient PR program. Patients were randomized to maintenance intervention group (IG) and standard monitoring program or control group (CG). The effects on BODE index, 6-minute-walk test distance (6MWD), and health-related quality of life were compared at 12, 24, and 36 months. MEASUREMENTS AND MAIN RESULTS: A total of 138 (96.5%) completed the 8-week program. At this time, all outcomes (BODE, 6MWD, and health-related quality of life) showed clinically and statistically significant improvements (P ≤ 0.001). During the follow-up period, the magnitude of change in 6MWD differed between IG and CG (P = 0.042), with a slight initial increase in the IG during the first year and smaller decline afterward. The BODE index changes differed between baseline and measurements at Month 24 (P = 0.043). At 3 years, the adherence rate of IG patients was 66% and 17% for the CG group (P < 0.001). CONCLUSIONS: This study shows a 2-year beneficial effect of a program of rehabilitation maintenance on the BODE index and 6MWD when compared with a standard strategy. This effect vanishes after the second year of follow-up. Clinical trial registered with www.clinicaltrials.gov (NCT 01090999).

Persistence of Breakage in Specific Chromosome Bands 6 Years after Acute Exposure to Oil.

BACKGROUND: The identification of breakpoints involved in chromosomal damage could help to detect genes involved in genetic disorders, most notably cancer. Until now, only one published study, carried out by our group, has identified chromosome bands affected by exposure to oil from an oil spill. In that study, which was performed two years after the initial oil exposure in individuals who had participated in clean-up tasks following the wreck of the Prestige, three chromosomal bands (2q21, 3q27, 5q31) were found to be especially prone to breakage. A recent follow-up study, performed on the same individuals, revealed that the genotoxic damage had persisted six years after oil exposure. OBJECTIVES: To determine whether there exist chromosome bands which are especially prone to breakages and to know if there is some correlation with those detected in the previous study. In addition, to investigate if the DNA repair problems detected previously persist in the present study. DESIGN: Follow-up study performed six years after the Prestige oil spill. SETTING: Fishermen cooperatives in coastal villages. PARTICIPANTS: Fishermen highly exposed to oil spill who participated in previous genotoxic study six years after the oil. MEASUREMENTS: Chromosome damage in peripheral lymphocytes. For accurate identification of the breakpoints involved in chromosome damage of circulating lymphocytes, a sequential stain/G-banding technique was employed. To determine the most break-prone chromosome bands, two statistical methods, the Fragile Site Multinomial and the chi-square tests (where the bands were corrected by their length) were used. To compare the chromosome lesions, structural chromosome alterations and gaps/breaks between two groups of individuals we used the GEE test which takes into account a possible within-individual correlation. Dysfunctions in DNA repair mechanisms, expressed as chromosome damage, were assessed in cultures with aphidicolin by the GEE test. RESULTS: Cytogenetic analyses were performed in 47 exposed individuals. A total of 251 breakpoints in exposed individuals) were identified, showing a non-uniform distribution in the human ideogram. Ten chromosome bands were found to be especially prone to breakage through both statistical methods. By comparing these bands with those observed in certain exposed individuals who had already participated the previous study, it was found in both studies that four bands (2q21, 3q27, 5q31 and 17p11.2) are particularly sensitive to breakage. Additionally, the dysfunction in DNA repair mechanisms was not significantly higher in oil-exposed individuals than in non-exposed individuals. LIMITATIONS: The sample size and the possibility of some kind of selection bias should be considered. Genotoxic results cannot be extrapolated to the high number of individuals who participated occasionally in clean-up tasks. CONCLUSION: Our findings show the existence of at least four target bands (2q21, 3q27, 5q31 and 17p11.2) with a greater propensity to break over time after an acute exposure to oil. The breaks in these bands, which are commonly involved in hematological cancer, may explain the increase of cancer risk reported in chronically benzene-exposed individuals. In addition, a more efficiency of the DNA repair mechanisms has been detected six years after in fishermen who were highly exposed to the oil spill. To date, only this study, performed by our group on the previous and present genotoxic effects, has analyzed the chromosomal regions affected by breakage after an acute oil exposure.

Follow-Up Genotoxic Study: Chromosome Damage Two and Six Years after Exposure to the Prestige Oil Spill.

BACKGROUND: The north-west coast of Spain was heavily contaminated by the Prestige oil spill, in 2002. Individuals who participated in the clean-up tasks showed increased chromosome damage two years after exposure. Long-term clinical implications of chromosome damage are still unknown. OBJECTIVE: To realize a follow-up genotoxic study to detect whether the chromosome damage persisted six years after exposure to the oil. DESIGN: Follow-up study. SETTING: Fishermen cooperatives in coastal villages. PARTICIPANTS: Local fishermen who were highly exposed (n = 52) and non-exposed (n = 23) to oil seven years after the spill. MEASUREMENTS: Chromosome damage in circulating lymphocytes. RESULTS: Chromosome damage in exposed individuals persists six years after oil exposure, with a similar incidence than those previously detected four years before. A surprising increase in chromosome damage in non-exposed individual was found six years after Prestige spill vs. those detected two years after the exposure. LIMITATIONS: The sample size and the possibility of some kind of selection bias should be considered. Genotoxic results cannot be extrapolated to the approximately 300,000 individuals who participated occasionally in clean-up tasks. CONCLUSION: The persistence of chromosome damage detected in exposed individuals six years after oil exposure seems to indicate that the cells of the bone marrow are affected. A surprising increase in chromosome damage in non-exposed individuals detected in the follow-up study suggests an indirect exposition of these individuals to some oil compounds or to other toxic agents during the last four years. More long-term studies are needed to confirm the presence of chromosome damage in exposed and non-exposed fishermen due to the association between increased chromosomal damage and increased risk of cancer. Understanding and detecting chromosome damage is important for detecting cancer in its early stages. The present work is the first follow-up cytogenetic study carried out in lymphocytes to determine genotoxic damage evolution between two and six years after oil exposure in same individuals.

Rehabilitación respiratoria / Pulmonary Rehabilitation

La rehabilitación respiratoria (RR) ha demostrado mejorar la disnea, la capacidad de esfuerzo y la calidad de vida relacionada con la salud en los pacientes con enfermedad pulmonar obstructiva crónica (EPOC). En otras enfermedades distintas de la EPOC también ha mostrado beneficios, aunque el grado de evidencia es menor. Los componentes fundamentales de los programas de RR son el entrenamiento muscular, la educación y la fisioterapia respiratoria, siendo aconsejable también contemplar la terapia ocupacional, el soporte psicosocial y la intervención nutricional. Los programas domiciliarios han demostrado igual eficacia que los hospitalarios. La duración de los programas de RR no debe ser inferior a 8 semanas o 20 sesiones. La RR iniciada precozmente, incluso durante las exacerbaciones, ha demostrado ser eficaz y segura. La utilización de oxígeno o ventilación no invasiva durante el entrenamiento es controvertida y dependiente de la situación del paciente. En el momento actual desconocemos cuál es la mejor estrategia para mantener los beneficios de la RR a largo plazo. Una mayor duración de los programas o la telemedicina podrían ser claves para prolongar los resultados conseguidos

Pulmonary rehabilitation (PR) has been shown to improve dyspnea, exercise capacity and health-related quality of life in patients with chronic obstructive pulmonary disease (COPD). PR has also shown benefits in diseases other than COPD but the level of evidence is lower. The fundamental components of PR programs are muscle training, education and chest physiotherapy. Occupational therapy, psychosocial support and nutritional intervention should also be considered. Home programs have been shown to be as effective as hospital therapy. The duration of rehabilitation programs should not be less than 8 weeks or 20 sessions. Early initiation of PR, even during exacerbations, has proven safe and effective. The use of oxygen or noninvasive ventilation during training is controversial and dependent on the patient's situation. At present, the best strategy for maintaining the benefits of PR in the long term is unknown. Longer PR programs or telemedicine could play a key role in extending the results obtained

Pulmonary rehabilitation. Sociedad Española de Neumología y Cirugía Torácica (SEPAR).

Pulmonary rehabilitation (PR) has been shown to improve dyspnea, exercise capacity and health-related quality of life in patients with chronic obstructive pulmonary disease (COPD). PR has also shown benefits in diseases other than COPD but the level of evidence is lower. The fundamental components of PR programs are muscle training, education and chest physiotherapy. Occupational therapy, psychosocial support and nutritional intervention should also be considered. Home programs have been shown to be as effective as hospital therapy. The duration of rehabilitation programs should not be less than 8 weeks or 20 sessions. Early initiation of PR, even during exacerbations, has proven safe and effective. The use of oxygen or noninvasive ventilation during training is controversial and dependent on the patient's situation. At present, the best strategy for maintaining the benefits of PR in the long term is unknown. Longer PR programs or telemedicine could play a key role in extending the results obtained.

Evaluation of the persistence of functional and biological respiratory health effects in clean-up workers 6 years after the prestige oil spill.

Fishermen who had participated in clean-up activities of the Prestige oil spill showed increased bronchial responsiveness and higher levels of respiratory biomarkers 2 years later. We aimed to evaluate the persistence of these functional and biological respiratory health effects 6 years after clean-up work. In 2008/2009 a follow-up study was done in 230 never-smoking fishermen who had been exposed to clean-up work in 2002/2003 and 87 non-exposed fishermen. Lung function and bronchial responsiveness testing and the determination of respiratory biomarkers in exhaled breath condensate were done identically as in the baseline survey in 2004/2005. Associations between participation in clean-up work and respiratory health parameters were assessed using linear and logistic regression analyses adjusting for sex and age. Information from 158 exposed (69%) and 57 non-exposed (66%) fishermen was obtained. Loss to follow-up in the non-exposed was characterised by less respiratory symptoms at baseline. During the 4-year follow-up period lung function, bronchial hyperresponsiveness and the levels of respiratory biomarkers of oxidative stress and growth factors had deteriorated notably more among non-exposed than among exposed. At follow-up, respiratory health indices were similar or better in clean-up workers than in non-exposed. No clear differences between highly exposed and moderately exposed clean-up workers were found. In conclusion, we could not detect long-term respiratory health effects in clean-up workers 6 years after the Prestige oil spill. Methodological issues that need to be considered in this type of studies include the choice of a non-exposed control group and limitation of follow-up to subgroups such as never smokers.

Vibration response imaging versus perfusion scan in lung cancer surgery evaluation.

OBJECTIVE: Ventilation/perfusion scan is a standard procedure in high-risk surgical patients to predict pulmonary function after surgery. Vibration response imaging is a technique that could be used in these patients. The objective of our study was to compare this imaging technique with the usual scanning technique for predicting postoperative forced expiratory volume. METHODS: We assessed 48 patients with lung cancer who were candidates for lung resection. Forced spirometry, vibration response imaging, and ventilation/perfusion scan were performed in patients before surgery, and spirometry was performed after intervention. RESULTS: We included 48 patients (43 men; mean age, 64 years) undergoing lung cancer surgery (32 lobectomies/16 pneumonectomies). On comparison of both techniques, for pneumonectomy, we found a concordance of 0.84 (95% confidence interval, 0.76-0.92) and Bland-Altman limits of agreement of -0.33 to +0.45, with an average difference of 0.064. By comparing postoperative spirometry with vibration response imaging, we found a concordance of 0.66 (95% confidence interval, 0.38-0.93) and Bland-Altman limits of agreement of -0.60 to +0.33, with an average difference of -0.13. CONCLUSIONS: The 2 techniques presented good concordance values. Vibration response imaging shows non-negligible confidence intervals. Vibration response imaging may be useful in preoperative algorithms in patients before lung cancer surgery.

Chromosomal bands affected by acute oil exposure and DNA repair errors.

BACKGROUND: In a previous study, we showed that individuals who had participated in oil clean-up tasks after the wreckage of the Prestige presented an increase of structural chromosomal alterations two years after the acute exposure had occurred. Other studies have also reported the presence of DNA damage during acute oil exposure, but little is known about the long term persistence of chromosomal alterations, which can be considered as a marker of cancer risk. OBJECTIVES: We analyzed whether the breakpoints involved in chromosomal damage can help to assess the risk of cancer as well as to investigate their possible association with DNA repair efficiency. METHODS: Cytogenetic analyses were carried out on the same individuals of our previous study and DNA repair errors were assessed in cultures with aphidicolin. RESULTS: Three chromosomal bands, 2q21, 3q27 and 5q31, were most affected by acute oil exposure. The dysfunction in DNA repair mechanisms, expressed as chromosomal damage, was significantly higher in exposed-oil participants than in those not exposed (p= 0.016). CONCLUSION: The present study shows that breaks in 2q21, 3q27 and 5q31 chromosomal bands, which are commonly involved in hematological cancer, could be considered useful genotoxic oil biomarkers. Moreover, breakages in these bands could induce chromosomal instability, which can explain the increased risk of cancer (leukemia and lymphomas) reported in chronically benzene-exposed individuals. In addition, it has been determined that the individuals who participated in clean-up of the oil spill presented an alteration of their DNA repair mechanisms two years after exposure.

Estándares de calidad asistencial en rehabilitación respiratoria en pacientes con enfermedad pulmonar crónica / Standards for Quality Care in Respiratory Rehabilitation in Patients With Chronic Pulmonary Disease

La rehabilitación respiratoria (RR) ha demostrado ser eficaz con un alto nivel de evidencia en términos de mejora de los síntomas, la capacidad de esfuerzo y la calidad de vida relacionada con la salud (CVRS) en los pacientes con enfermedad pulmonar obstructiva crónica (EPOC) y en algunos pacientes con enfermedades distintas de la EPOC. De acuerdo con las guías internacionales, la RR está indicada fundamentalmente en todo paciente con síntomas respiratorios crónicos. Dependiendo de los mismos se le ofrecerá un tipo u otro de programa. Por encargo de la Sociedad Española de Neumología y Cirugía Torácica (SEPAR) hemos realizado este documento con el objetivo de unificar los criterios de calidad asistencial en RR. El documento esta organizado en 5 apartados que incluyen: las indicaciones de la RR, la evaluación de los candidatos, los componentes de los programas, las características de los programas de RR y el papel de la administración en la implantación de la RR. En cada apartado hemos distinguido 5 grandes grupos de enfermedades: EPOC, enfermedades respiratorias crónicas distintas de la EPOC con disnea limitante (ERCDL), enfermedades hipersecretoras, enfermedades neuromusculares con síntomas respiratorios y pacientes candidatos a cirugía torácica para una resección pulmonar(AU)

Respiratory rehabilitation (RR) has been shown to be effective with a high level of evidence in terms of improving symptoms, exertion capacity and health-related quality of life (HRQL) in patients with COPD and in some patients with diseases other than COPD. According to international guidelines, RR is basically indicated in all patients with chronic respiratory symptoms, and the type of program offered depends on the symptoms themselves. As requested by the Spanish Society of Pneumology and Thoracic Surgery (SEPAR), we have created this document with the aim to unify the criteria for quality care in RR. The document is organized into sections: indications for RR, evaluation of candidates, program components, characteristics of RR programs and the role of the administration in the implementation of RR. In each section, we have distinguished 5 large disease groups: COPD, chronic respiratory diseases other than COPD with limiting dyspnea, hypersecretory diseases, neuromuscular diseases with respiratory symptoms and patients who are candidates for thoracic surgery for lung resection(AU)

Standards for quality care in respiratory rehabilitation in patients with chronic pulmonary disease. Quality Healthcare Committee. Spanish Society of Pneumology and Thoracic Surgery (SEPAR).

Respiratory rehabilitation (RR) has been shown to be effective with a high level of evidence in terms of improving symptoms, exertion capacity and health-related quality of life (HRQL) in patients with COPD and in some patients with diseases other than COPD. According to international guidelines, RR is basically indicated in all patients with chronic respiratory symptoms, and the type of program offered depends on the symptoms themselves. As requested by the Spanish Society of Pneumology and Thoracic Surgery (SEPAR), we have created this document with the aim to unify the criteria for quality care in RR. The document is organized into sections: indications for RR, evaluation of candidates, program components, characteristics of RR programs and the role of the administration in the implementation of RR. In each section, we have distinguished 5 large disease groups: COPD, chronic respiratory diseases other than COPD with limiting dyspnea, hypersecretory diseases, neuromuscular diseases with respiratory symptoms and patients who are candidates for thoracic surgery for lung resection.

Persistent respiratory symptoms in clean-up workers 5 years after the Prestige oil spill.

OBJECTIVES: Fishermen who had participated in clean-up activities of the Prestige oil spill showed an excess risk of respiratory symptoms 1-2 years later, but the long-term persistence of these health effects is unclear. The aim of this study was to evaluate the persistence of these respiratory symptoms 5 years after clean-up work. METHODS: Subgroups of 501 fishermen who had been exposed to clean-up work and 177 non-exposed individuals were re-interviewed by telephone in 2008, including the same symptom questions as in the initial survey. Associations between participation in clean-up work and respiratory symptoms were assessed using log-binomial and multinomial regression analyses adjusting for sex, age and smoking. RESULTS: Information from 466 exposed (93%) and 156 non-exposed (88%) fishermen was obtained. The prevalence of lower respiratory tract symptoms (including wheeze, shortness of breath, cough and phlegm) had slightly decreased in both groups, but remained higher among the exposed (RR 1.4, 95% CI 1.1 to 1.9). The risk of having persistent respiratory symptoms (reported both at baseline and at follow-up) increased with the degree of exposure: RR ratio 1.7 (95% CI 0.9 to 3.1) and 3.3 (95% CI 1.8 to 6.2) for moderately and highly exposed, respectively, when compared with those without any symptoms. Findings for nasal symptoms and for respiratory medication usage were similar. CONCLUSIONS: Participation in clean-up activities of oil spills may result in respiratory symptoms that persist up to 5 years after exposure. Guidelines for preventive measures and a continued surveillance of clean-up workers of oil spills are necessary.

Health changes in fishermen 2 years after clean-up of the Prestige oil spill.

BACKGROUND: In 2002, the oil tanker Prestige spilled more than 67,000 tons of bunker oil, heavily contaminating the coast of northwestern Spain. OBJECTIVE: To assess respiratory effects and chromosomal damage in clean-up workers of the oil spill 2 years after the exposure. DESIGN: Cross-sectional study. SETTING: Fishermen cooperatives in coastal villages. PARTICIPANTS: Local fishermen who were highly exposed (n = 501) or not exposed (n = 177) to oil 2 years after the spill. MEASUREMENTS: Respiratory symptoms; forced spirometry; methacholine challenge; markers of oxidative stress (8-isoprostane), airway inflammation (interleukins, tumor necrosis factor-α, and interferon-γ), and growth factor activity in exhaled breath condensate; and chromosomal lesions and structural alterations in circulating lymphocytes. RESULTS: Compared with nonexposed participants, persons exposed to oil were at increased risk for lower respiratory tract symptoms (risk difference, 8.0 [95% CI, 1.1 to 14.8]). Lung function did not significantly differ between the groups. Among nonsmoking participants, exposed individuals had higher exhaled 8-isoprostane levels than nonexposed individuals (geometric mean ratio, 2.5 [CI, 1.7 to 3.7]), and exposed individuals with lower respiratory tract symptoms had higher 8-isoprostane levels than those of exposed individuals without symptoms. Exposed nonsmoking participants also had higher levels of exhaled vascular endothelial growth factor (risk difference, 44.8 [CI, 27.9 to 61.6]) and basic fibroblast growth factor (risk difference, 16.0 [CI, 3.5 to 28.6]). A higher proportion of exposed participants had structural chromosomal alterations (risk difference, 27.4 [CI, 10.0 to 44.8]), predominantly unbalanced alterations. The risk for elevated levels of exhaled 8-isoprostane, vascular endothelial growth factor, and basic fibroblast growth factor and structural chromosomal alterations seemed to increase with intensity of exposure to clean-up work. LIMITATIONS: The clinical significance of exhaled biomarkers and chromosomal findings are uncertain. The association between oil exposure and the observed changes may not be causal. The findings may not apply to spills involving other types of oil or to different populations of oil spill workers. CONCLUSION: Participation in clean-up of a major oil spill was associated with persistent respiratory symptoms, elevated markers of airway injury in breath condensate, and chromosomal damage.

Impacto del tratamiento preventivo con agonistas adrenérgicos B2 de acción larga y glucocorticoides inhalados en la morbimortalidad de 1.543 episodios de exacerbación grave de asma / Impact of Preventive Treatment With Long-Acting B2-Adrenergic Agonists and Inhaled Corticosteroids on the Morbidity and Mortality of Severe Asthma Exacerbations in 1543 Patients

IntroducciónRecientes revisiones sistemáticas y metaanálisis que han analizado la seguridad de los agonistas adrenérgicos β2 de acción larga por vía inhalada en el tratamiento de mantenimiento del asma han mostrado, sorprendentemente, resultados dispares. El objetivo de este estudio ha sido analizar el impacto, en términos de eficacia y seguridad, del tratamiento previo de mantenimiento del asma en la exacerbación asmática grave.Pacientes y métodosSe han evaluado retrospectivamente las características clínicas de las exacerbaciones graves que presentaron 1.543 pacientes con asma persistente moderada o grave, de los que 493 recibían previamente un agonista adrenérgico β2 de acción larga más un glucocorticoide, ambos inhalados; 456 recibían sólo un glucocorticoide inhalado, y 594 no seguían ningún tratamiento de mantenimiento.ResultadosEl grupo que recibía un agonista adrenérgico β2 de acción larga inhalado no presentó mayores mortalidad, necesidad de ingreso en la unidad de cuidados intensivos y estancia hospitalaria, peor pH ni mayor obstrucción del flujo aéreo que los otros 2 grupos de pacientes. Por el contrario, al recibir el alta hospitalaria presentó un volumen espiratorio forzado en el primer segundo significativamente mejor (p=0,009): media±desviación estándar del 54±16%, frente al 48±19 y el 48±20% de los otros 2 grupos. En el grupo que no recibía tratamiento previo el pH fue significativamente peor (7,37±0,11, frente a 7,39±0,09 y 7,39±0,08) y hubo una mayor proporción de pacientes que precisaron ingreso en la unidad de cuidados intensivos (el 11,1 frente al 6,5 y el 7,7%), en comparación con los otros 2 (p=0,002 y p=0,018, respectivamente)(AU)

ConclusionesEl presente estudio no constató una mayor morbimortalidad de la exacerbación asmática grave en los pacientes con asma persistente moderada-grave que recibían previamente tratamiento con un agonista adrenérgico β2 de acción larga y un glucocorticoide inhalados. Por el contrario, quienes no seguían tratamiento de mantenimiento presentaron una exacerbación más grave(AU)

Background and ObjectivesRecent systematic reviews and meta-analyses examining long-acting #b2-adrenergic agonists (LABA) as maintenance treatment for asthma have shown surprisingly conflicting results. The aim of the present study was to determine the impact, in terms of efficacy and safety, of previous maintenance treatment on severe asthma exacerbations.Patients and MethodsWe retrospectively evaluated the clinical characteristics of exacerbations experienced by 1543 patients with moderate persistent and severe persistent asthma. Drug therapy was as follows: a combination of inhaled LABAs and corticosteroids (493 patients), an inhaled corticosteroid only (456 patients), and no maintenance treatment (594 patients).ResultsAsthmatic patients taking LABAs did not show higher mortality, longer stay in the intensive care unit, longer hospital stay, lower pH, or worse airflow obstruction than the other 2 groups. On the contrary, they had a higher mean (SD) forced expiratory volume in 1 second at discharge (54% [16%]) than patients taking inhaled corticosteroids (48% [19%]) and patients taking no maintenance treatment (48% [20%]) (P=.009). Patients taking no maintenance treatment also had lower mean (SD) pH values (7.37 [0.11]) than patients taking LABAs (7.39 [0.09]) and patients taking inhaled corticosteroids (7.39 [0.08]) (P=.002), and more admissions to the intensive care unit (11.1% vs 6.5% and 7.7%; P=.002 and P=.018, respectively).ConclusionsThis study did not reveal higher morbidity or mortality in severe asthma exacerbations in patients with moderate persistent or severe persistent asthma who had received inhaled LABAs combined with inhaled corticosteroids. On the contrary, asthma patients who did not use maintenance treatment experienced more severe asthma exacerbations(AU)

[Impact of preventive treatment with long-acting beta(2)-adrenergic agonists and inhaled corticosteroids on the morbidity and mortality of severe asthma exacerbations in 1543 patients]. / Impacto del tratamiento preventivo con agonistas adrenérgicos beta(2) de acción larga y glucocorticoides inhalados en la morbimortalidad de 1.543 episodios de exacerbación grave de asma.

BACKGROUND AND OBJECTIVES: Recent systematic reviews and meta-analyses examining long-acting #b(2)-adrenergic agonists (LABA) as maintenance treatment for asthma have shown surprisingly conflicting results. The aim of the present study was to determine the impact, in terms of efficacy and safety, of previous maintenance treatment on severe asthma exacerbations. PATIENTS AND METHODS: We retrospectively evaluated the clinical characteristics of exacerbations experienced by 1543 patients with moderate persistent and severe persistent asthma. Drug therapy was as follows: a combination of inhaled LABAs and corticosteroids (493 patients), an inhaled corticosteroid only (456 patients), and no maintenance treatment (594 patients). RESULTS: Asthmatic patients taking LABAs did not show higher mortality, longer stay in the intensive care unit, longer hospital stay, lower pH, or worse airflow obstruction than the other 2 groups. On the contrary, they had a higher mean (SD) forced expiratory volume in 1 second at discharge (54% [16%]) than patients taking inhaled corticosteroids (48% [19%]) and patients taking no maintenance treatment (48% [20%]) (P=.009). Patients taking no maintenance treatment also had lower mean (SD) pH values (7.37 [0.11]) than patients taking LABAs (7.39 [0.09]) and patients taking inhaled corticosteroids (7.39 [0.08]) (P=.002), and more admissions to the intensive care unit (11.1% vs 6.5% and 7.7%; P=.002 and P=.018, respectively). CONCLUSIONS: This study did not reveal higher morbidity or mortality in severe asthma exacerbations in patients with moderate persistent or severe persistent asthma who had received inhaled LABAs combined with inhaled corticosteroids. On the contrary, asthma patients who did not use maintenance treatment experienced more severe asthma exacerbations.

[Management according to the Global Initiative for Asthma guidelines of patients with near-fatal asthma reduces morbidity and mortality]. / El tratamiento según la guía de la Global Initiative for Asthma (GINA) reduce la morbimortalidad de los pacientes con asma de riesgo vital.

OBJECTIVE: To assess the effect of adequate outpatient care as defined by guidelines of the Global Initiative for Asthma (GINA) on the long-term outcome of near-fatal asthma. PATIENTS AND METHODS: Fifty-three patients who had experienced a near-fatal attack of asthma were treated according to the GINA guidelines and followed for a mean of 49 months (intervention group). Clinical and spirometric measurements corresponding to the periods before the attack (obtained retrospectively) and after the attack (obtained prospectively) were compared to measurements from 40 near-fatal asthma patients who had not been managed according to the GINA guidelines and who were followed for a mean of 51 months (historic control group). RESULTS: There were no deaths in the intervention group and 6 deaths (15%) in the control group (P=.005). The mean (SD) number of new near-fatal asthma attacks was significantly lower in the intervention group (0.17 [0.61]) than in the control group (1.6 [1]) (P< .001). Emergency visits following a near-fatal asthma attack decreased from 0.9 (1.8) to 0.3 (0.6) in the intervention group and hospital admissions decreased from 3.4 (5.1) to 0.5 (1.4) (P< .001). Eosinophil count decreased from 390 (411) x l0(9) cells/L to 159 (121) x l0(9) cells/L (P=.01) and forced expiratory volume in 1 second increased from 68% (23%) of predicted to 76% (20%) (P=.006). CONCLUSIONS: Management according to the GINA guidelines of patients who had experienced a near-fatal asthma attack was associated with a decrease in asthma morbidity and mortality.

El tratamiento según la guía de la Global Initiative for Asthma (GINA) reduce la morbimortalidad de los pacientes con asma de riesgo vital / Management according to the global initiative for asthma guidelines of patients with near-fatal asthma reduces morbidity and mortality

Objetivo: Valorar el efecto de un adecuado tratamiento ambulatorio, de acuerdo con las recomendaciones de la guía de la Global Initiative for Asthma (GINA), en la evolución a largo plazo del asma de riesgo vital (ARV). Pacientes y métodos: Durante una media de 49 meses se realizó el seguimiento de 53 pacientes que habían sobrevivido a una crisis de ARV y que se trataron de acuerdo con las recomendaciones de la GINA (grupo de intervención). Se obtuvieron datos clínicos y espirométricos retrospectivos y prospectivos (antes y después del ataque de ARV, respectivamente) y se compararon con los de 40 pacientes con ARV que no fueron tratados según las recomendaciones de la GINA (grupo control histórico) y cuyo seguimiento medio fue de 51 meses. Resultados: No se registraron fallecimientos en el grupo de intervención, mientras que en el grupo control murieron 6 pacientes (15%) (p = 0,005). Los nuevos ataques de ARV fueron significativamente menores (p < 0,001) en el grupo de intervención, con una media ± desviación estándar de 0,17 ± 0,61, frente a 1,6 ± 1 en el grupo control. En el grupo de intervención las visitas a urgencias descendieron de 0,9 ± 1,8 a 0,3 ± 0,6 después de la crisis de ARV (p = 0,03), y los ingresos hospitalarios pasaron de 3,4 ± 5,1 a 0,5 ± 1,4 (p < 0,001); el recuento de eosinófilos en sangre periférica descendió de 390 ± 411 a 159 ± 121 células x 109/l (p = 0,01) y el volumen espiratorio forzado en el primer segundo aumentó del 68 ± 23% al 76 ± 20% (p = 0,006). Conclusiones: En los pacientes que han presentado una crisis de ARV el tratamiento siguiendo las recomendaciones de la GINA se asocia a un descenso de la morbilidad y la mortalidad del asma

Objective: To assess the effect of adequate outpatient care as defined by guidelines of the Global Initiative for Asthma (GINA) on the long-term outcome of near-fatal asthma. Patients and methods: Fifty-three patients who had experienced a near-fatal attack of asthma were treated according to the GINA guidelines and followed for a mean of 49 months (intervention group). Clinical and spirometric measurements corresponding to the periods before the attack (obtained retrospectively) and after the attack (obtained prospectively) were compared to measurements from 40 near-fatal asthma patients who had not been managed according to the GINA guidelines and who were followed for a mean of 51 months (historic control group). Results: There were no deaths in the intervention group and 6 deaths (15%) in the control group (P=.005). The mean (SD) number of new near-fatal asthma attacks was significantly lower in the intervention group (0.17 [0.61]) than in the control group (1.6 [1]) (P<.001). Emergency visits following a near-fatal asthma attack decreased from 0.9 (1.8) to 0.3 (0.6) in the intervention group and hospital admissions decreased from 3.4 (5.1) to 0.5 (1.4) (P<.001). Eosinophil count decreased from 390 (411) x l09 cells/L to 159 (121) x l09 cells/L (P=.01) and forced expiratory volume in 1 second increased from 68% (23%) of predicted to 76% (20%) (P=.006). Conclusions: Management according to the GINA guidelines of patients who had experienced a near-fatal asthma attack was associated with a decrease in asthma morbidity and mortality

[Health effects of exposure to oil spills]. / La exposición a las mareas negras y sus efectos en la salud.

The sinking of the oil tanker Prestige off the coast of Galicia was not only the worst ecological disaster ever to affect Spain, it also led to thousands of people who participated in the cleanup of the contaminated areas being exposed to potentially dangerous toxic substances. As the airway is one of the principal routes of entry into the body of these toxic compounds, the possible effects of exposure to such spills is of particular interest and concern to respiratory specialists. The paucity of clinical information available on the subject was the motive for this paper, which reviews the scientific studies undertaken in the aftermath of other accidents involving oil tankers and concludes with a summary of the clinical and epidemiological data published to date on the Prestige oil spill.