Clinical Concepts for Triple Therapy Use in Patients with COPD: A Delphi Consensus.

Purpose: Role of triple therapy in chronic obstructive pulmonary disease (COPD) management is supported by growing evidence, but consensus is lacking on various aspects. We conducted a Delphi survey in respiratory experts on the effects of triple therapy on exacerbation reduction, early optimization, pneumonia risk, and mortality benefits in COPD management. Methods: The study comprised 2-round online surveys and a participant meeting with 21 respiratory experts from 10 countries. The 31-statement questionnaire was prepared using Decipher software after literature review. Responses were recorded using Likert scale ranging from 1 (disagreement) to 9 (agreement) with a consensus threshold of 75%. Results: All experts participated in both surveys and 14/21 attended participant meeting. Consensus was reached on 13/31 questions in first survey and 4/14 in second survey on: mortality benefits of triple therapy; comparable pneumonia risk between single inhaler triple therapy (SITT) and multiple inhaler triple therapy (81%); preference of SITT for patients with high eosinophil count (95%); exacerbation risk reduction and healthcare cost benefits with early initiation of SITT post exacerbation-related hospitalization (<30 days) (86%). No consensus was reached on first line SITT use after first exacerbation resulting in COPD diagnosis (62%). Conclusion: This study demonstrated that there is consensus among experts regarding many of the key concepts about appropriate clinical use and benefits of triple therapy in COPD. More evidence is required for evaluating the benefits of early optimisation of triple therapy.

Associated factors of professional burnout among faculty members of graduate stricto sensu programs in language teaching and linguistics: a cross-sectional study

Abstract BACKGROUND: The burnout syndrome can be avoided and/or have its signs and symptoms reduced by knowing the five associated factors that help identify the health and working conditions of the professors of graduate programs. OBJECTIVE: To analyze the factors associated with burnout among faculty members of graduate stricto sensu programs. DESIGN AND SETTING: A cross-sectional study was conducted among 585 faculty members of Graduate Programs in Language Teaching and Linguistics in Brazil. METHODS: Data were collected through an online questionnaire. The outcomes were the dimensions of burnout and its related factors identified through multiple templates of logistic regression. RESULTS: Faculty members with increased chances of emotional exhaustion and depersonalization mentioned the use of medications due to labor activities. The negative influence of pace and intensity of work, thoughts about quitting the program, and having to produce three or more scientific articles were associated with higher chances of emotional exhaustion, while having to achieve nine hours per week in undergraduate programs was related to reduced personal accomplishment. Having a conjugal relationship, satisfaction with health and work, post-doctoral degree, autonomy, and good interpersonal relationships with faculty members of the program reduced the chances of emotional exhaustion. Reduced chances of depersonalization occurred among those who were satisfied with work, had good interpersonal relationships with advisees and faculty members, and received productivity funding. CONCLUSION: Sociodemographic, health, and occupational factors related to the dimensions of burnout were identified.

Associated factors of professional burnout among faculty members of graduate stricto sensu programs in language teaching and linguistics: a cross-sectional study.

BACKGROUND: The burnout syndrome can be avoided and/or have its signs and symptoms reduced by knowing the five associated factors that help identify the health and working conditions of the professors of graduate programs. OBJECTIVE: To analyze the factors associated with burnout among faculty members of graduate stricto sensu programs. DESIGN AND SETTING: A cross-sectional study was conducted among 585 faculty members of Graduate Programs in Language Teaching and Linguistics in Brazil. METHODS: Data were collected through an online questionnaire. The outcomes were the dimensions of burnout and its related factors identified through multiple templates of logistic regression. RESULTS: Faculty members with increased chances of emotional exhaustion and depersonalization mentioned the use of medications due to labor activities. The negative influence of pace and intensity of work, thoughts about quitting the program, and having to produce three or more scientific articles were associated with higher chances of emotional exhaustion, while having to achieve nine hours per week in undergraduate programs was related to reduced personal accomplishment. Having a conjugal relationship, satisfaction with health and work, post-doctoral degree, autonomy, and good interpersonal relationships with faculty members of the program reduced the chances of emotional exhaustion. Reduced chances of depersonalization occurred among those who were satisfied with work, had good interpersonal relationships with advisees and faculty members, and received productivity funding. CONCLUSION: Sociodemographic, health, and occupational factors related to the dimensions of burnout were identified.

Workaholism and burnout among stricto sensu graduate professors.

OBJECTIVE: To analyze the association of excessive work and compulsive work with the dimensions of the burnout syndrome in masters and doctoral professors of Languages, Literature, and Linguistics in Brazil. METHODS: Cross-sectional study carried out with 585 permanent professors of stricto sensu graduate studies in Languages, Literature, and Linguistics in Brazil. Data collection took place between February and August 2019, by an online questionnaire. The outcomes of this study were the compulsive work and excessive work dimensions of the Dutch Work Addiction Scale, the Maslach Burnout Inventory TM dimensions and their associated factors, identified by multiple logistic regression models. RESULTS: Professors with a high level of excessive work (29.40%) had 2.75 times the chance of high emotional exhaustion and 2.08 times the chance of high depersonalization. Regarding professors with a high level of compulsive work (8.03%), they had 4.88 times the chance of high emotional exhaustion and 2.97 times the chance of high depersonalization. No association of excessive work and compulsive work with low professional fulfillment was identified. CONCLUSION: The results showed a statistically significant association of excessive work and compulsive work with high emotional exhaustion and high depersonalization, allowing managers and professors to reflect the criteria that guide their work processes, to adopt management models, institutional regulatory policies, and strategies to improve the working conditions and health of professors.

Chronic Obstructive Pulmonary Disease-Related Mortality in Brazil, 2000-2019: A Multiple-Cause-of-Death Study.

Chronic obstructive pulmonary disease (COPD) remains a compelling cause of morbidity and mortality; however, it is underestimated and undertreated in Brazil. Using multiple causes of death data from the Information System on Mortality, we evaluated, from 2000 to 2019, national proportional mortality; trends in mortality rates stratified by age, sex, and macro-region; and causes of death and seasonal variation, considering COPD as an underlying and associated cause of death. COPD occurred in 1,132,968 deaths, corresponding to a proportional mortality of 5.0% (5.2% and 4.7% among men and women), 67.6% as the underlying, and 32.4% as an associated cause of death. The standardized mortality rate decreased by 25.8% from 2000 to 2019, and the underlying, associated, male and female, Southeast, South, and Center-West region deaths revealed decreasing standardized mortality trends. The mean age at death increased from 73.2 (±12.5) to 76.0 (±12.0) years of age. Respiratory diseases were the leading underlying causes, totaling 69.8%, with COPD itself reported for 67.6% of deaths, followed by circulatory diseases (15.8%) and neoplasms (6.24%). Respiratory failure, pneumonia, septicemia, and hypertensive diseases were the major associated causes of death. Significant seasonal variations, with the highest proportional COPD mortality during winter, occurred in the southeast, south, and center-west regions. This study discloses the need and value to accurately document epidemiologic trends related to COPD in Brazil, provided its burden on mortality in older age as a significant cause of death, aiming at effective planning of mortality prevention and control.

Bioprosthetic Aortic Valve Degeneration: a Review from a Basic Science Perspective

Abstract Introduction: The increase in the prevalence of aortic stenosis due to an aging population has led to an increasing number of surgical aortic valve replacements. Over the past 20 years, there has been a major shift in preference from mechanical to bioprosthetic valves. However, despite efforts, there is still no "ideal" bioprosthesis. It is crucial to understand the structure, biology, and function of native heart valves to design more intelligent, strong, durable, and physiological heart valve tissues. Methods: A comprehensive review of the literature was performed to identify articles reporting the basic mechanisms of bioprosthetic valve dysfunction and the biology of native valve cells. Searches were run in PubMed, MEDLINE® (the Medical Literature Analysis and Retrieval System Online), and Google Scholar. Terms for subject heading and keywords search included "biological heart valve dysfunction", "bioprosthesis dysfunction", "bioprosthesis degeneration", and "tissue heart valves". Results: All the relevant findings are summarized in the appropriate subsections. Structural dysfunction is a logical and expected consequence of the chemical, mechanical, and immunological processes that occur during fixation, manufacture, and implantation. Conclusion: Biological prosthesis valve dysfunction is a clinically significant process. It has become a major issue considering the growing rate of bioprosthesis implantation and improved long-term patient survival. Understanding bioprosthetic aortic valve degeneration from a basic science perspective is a key point to improve technologic advances and specifications that lead to a new generation of bioprostheses.

Comparative venomic profiles of three spiders of the genus Phoneutria.

Background: Spider venoms induce different physio-pharmacological effects by binding with high affinity on molecular targets, therefore being of biotechnological interest. Some of these toxins, acting on different types of ion channels, have been identified in the venom of spiders of the genus Phoneutria, mainly from P. nigriventer. In spite of the pharmaceutical potential demonstrated by P. nigriventer toxins, there is limited information on molecules from venoms of the same genus, as their toxins remain poorly characterized. Understanding this diversity and clarifying the differences in the mechanisms of action of spider toxins is of great importance for establishing their true biotechnological potential. This prompted us to compare three different venoms of the Phoneutria genus: P. nigriventer (Pn-V), P. eickstedtae (Pe-V) and P. pertyi (Pp-V). Methods: Biochemical and functional comparison of the venoms were carried out by SDS-PAGE, HPLC, mass spectrometry, enzymatic activities and electrophysiological assays (whole-cell patch clamp). Results: The employed approach revealed that all three venoms had an overall similarity in their components, with only minor differences. The presence of a high number of similar proteins was evident, particularly toxins in the mass range of ~6.0 kDa. Hyaluronidase and proteolytic activities were detected in all venoms, in addition to isoforms of the toxins Tx1 and Tx2-6. All Tx1 isoforms blocked Nav1.6 ion currents, with slight differences. Conclusion: Our findings showed that Pn-V, Pe-V and Pp-V are highly similar concerning protein composition and enzymatic activities, containing isoforms of the same toxins sharing high sequence homology, with minor modifications. However, these structural and functional variations are very important for venom diversity. In addition, our findings will contribute to the comprehension of the molecular diversity of the venoms of the other species from Phoneutria genus, exposing their biotechnological potential as a source for searching for new active molecules.

Bioprosthetic Aortic Valve Degeneration: a Review from a Basic Science Perspective.

INTRODUCTION: The increase in the prevalence of aortic stenosis due to an aging population has led to an increasing number of surgical aortic valve replacements. Over the past 20 years, there has been a major shift in preference from mechanical to bioprosthetic valves. However, despite efforts, there is still no "ideal" bioprosthesis. It is crucial to understand the structure, biology, and function of native heart valves to design more intelligent, strong, durable, and physiological heart valve tissues. METHODS: A comprehensive review of the literature was performed to identify articles reporting the basic mechanisms of bioprosthetic valve dysfunction and the biology of native valve cells. Searches were run in PubMed, MEDLINE® (the Medical Literature Analysis and Retrieval System Online), and Google Scholar. Terms for subject heading and keywords search included "biological heart valve dysfunction", "bioprosthesis dysfunction", "bioprosthesis degeneration", and "tissue heart valves". RESULTS: All the relevant findings are summarized in the appropriate subsections. Structural dysfunction is a logical and expected consequence of the chemical, mechanical, and immunological processes that occur during fixation, manufacture, and implantation. CONCLUSION: Biological prosthesis valve dysfunction is a clinically significant process. It has become a major issue considering the growing rate of bioprosthesis implantation and improved long-term patient survival. Understanding bioprosthetic aortic valve degeneration from a basic science perspective is a key point to improve technologic advances and specifications that lead to a new generation of bioprostheses.

Workaholism and burnout among stricto sensu graduate professors / Workaholism e burnout entre docentes de pós-graduação stricto sensu

ABSTRACT OBJECTIVE To analyze the association of excessive work and compulsive work with the dimensions of the burnout syndrome in masters and doctoral professors of Languages, Literature, and Linguistics in Brazil. METHODS Cross-sectional study carried out with 585 permanent professors of stricto sensu graduate studies in Languages, Literature, and Linguistics in Brazil. Data collection took place between February and August 2019, by an online questionnaire. The outcomes of this study were the compulsive work and excessive work dimensions of the Dutch Work Addiction Scale, the Maslach Burnout Inventory TM dimensions and their associated factors, identified by multiple logistic regression models. RESULTS Professors with a high level of excessive work (29.40%) had 2.75 times the chance of high emotional exhaustion and 2.08 times the chance of high depersonalization. Regarding professors with a high level of compulsive work (8.03%), they had 4.88 times the chance of high emotional exhaustion and 2.97 times the chance of high depersonalization. No association of excessive work and compulsive work with low professional fulfillment was identified. CONCLUSION The results showed a statistically significant association of excessive work and compulsive work with high emotional exhaustion and high depersonalization, allowing managers and professors to reflect the criteria that guide their work processes, to adopt management models, institutional regulatory policies, and strategies to improve the working conditions and health of professors.

RESUMO OBJETIVO Analisar a associação entre trabalho excessivo e trabalho compulsivo com as dimensões da síndrome de burnout em docentes de mestrado e doutorado em Letras e Linguística do Brasil. MÉTODOS Estudo transversal realizado com 585 docentes permanentes de pós-graduação stricto sensu em Letras e Linguística do Brasil. A obtenção dos dados ocorreu entre fevereiro e agosto de 2019, por meio de um questionário online. Os desfechos deste estudo foram as dimensões trabalho compulsivo e trabalho excessivo da escala Dutch Work Addiction Scale, as dimensões da Maslach Burnout Inventory TM e seus fatores associados, identificados por modelos múltiplos de regressão logística. RESULTADOS Docentes com alto nível de trabalho excessivo (29,40%) apresentaram 2,75 vezes a chance de exaustão emocional alta e 2,08 vezes a chance de despersonalização alta. Quanto aos docentes com alto nível de trabalho compulsivo (8,03%), apresentaram 4,88 vezes a chance de exaustão emocional alta e 2,97 vezes a chance de despersonalização alta. Não foi identificado associação entre trabalho excessivo e trabalho compulsivo com a baixa realização profissional. CONCLUSÃO Os resultados mostraram que existe uma associação estatisticamente significativa entre trabalho excessivo e trabalho compulsivo com exaustão emocional alta e despersonalização alta, possibilitando aos gestores e docentes refletirem os critérios que norteiam seus processos laborais, a fim de adotarem modelos de gestão, políticas reguladoras institucionais e estratégias adequadas para melhorar as condições de trabalho e saúde dos docentes.

Comparative venomic profiles of three spiders of the genus Phoneutria

Abstract Background: Spider venoms induce different physio-pharmacological effects by binding with high affinity on molecular targets, therefore being of biotechnological interest. Some of these toxins, acting on different types of ion channels, have been identified in the venom of spiders of the genus Phoneutria, mainly from P. nigriventer. In spite of the pharmaceutical potential demonstrated by P. nigriventer toxins, there is limited information on molecules from venoms of the same genus, as their toxins remain poorly characterized. Understanding this diversity and clarifying the differences in the mechanisms of action of spider toxins is of great importance for establishing their true biotechnological potential. This prompted us to compare three different venoms of the Phoneutria genus: P. nigriventer (Pn-V), P. eickstedtae (Pe-V) and P. pertyi (Pp-V). Methods: Biochemical and functional comparison of the venoms were carried out by SDS-PAGE, HPLC, mass spectrometry, enzymatic activities and electrophysiological assays (whole-cell patch clamp). Results: The employed approach revealed that all three venoms had an overall similarity in their components, with only minor differences. The presence of a high number of similar proteins was evident, particularly toxins in the mass range of ~6.0 kDa. Hyaluronidase and proteolytic activities were detected in all venoms, in addition to isoforms of the toxins Tx1 and Tx2-6. All Tx1 isoforms blocked Nav1.6 ion currents, with slight differences. Conclusion: Our findings showed that Pn-V, Pe-V and Pp-V are highly similar concerning protein composition and enzymatic activities, containing isoforms of the same toxins sharing high sequence homology, with minor modifications. However, these structural and functional variations are very important for venom diversity. In addition, our findings will contribute to the comprehension of the molecular diversity of the venoms of the other species from Phoneutria genus, exposing their biotechnological potential as a source for searching for new active molecules.

Comparative venomic profiles of three spiders of the genus Phoneutria

Spider venoms induce different physio-pharmacological effects by binding with high affinity on molecular targets, therefore being of biotechnological interest. Some of these toxins, acting on different types of ion channels, have been identified in the venom of spiders of the genus Phoneutria, mainly from P. nigriventer. In spite of the pharmaceutical potential demonstrated by P. nigriventer toxins, there is limited information on molecules from venoms of the same genus, as their toxins remain poorly characterized. Understanding this diversity and clarifying the differences in the mechanisms of action of spider toxins is of great importance for establishing their true biotechnological potential. This prompted us to compare three different venoms of the Phoneutria genus: P. nigriventer (Pn-V), P. eickstedtae (Pe-V) and P. pertyi (Pp-V). Methods: Biochemical and functional comparison of the venoms were carried out by SDS-PAGE, HPLC, mass spectrometry, enzymatic activities and electrophysiological assays (whole-cell patch clamp). Results: The employed approach revealed that all three venoms had an overall similarity in their components, with only minor differences. The presence of a high number of similar proteins was evident, particularly toxins in the mass range of ~6.0 kDa. Hyaluronidase and proteolytic activities were detected in all venoms, in addition to isoforms of the toxins Tx1 and Tx2-6. All Tx1 isoforms blocked Nav1.6 ion currents, with slight differences. Conclusion: Our findings showed that Pn-V, Pe-V and Pp-V are highly similar concerning protein composition and enzymatic activities, containing isoforms of the same toxins sharing high sequence homology, with minor modifications. However, these structural and functional variations are very important for venom diversity. In addition, our findings will contribute to the comprehension of the molecular diversity of the venoms of the other species from Phoneutria genus, exposing their biotechnological potential as a source for searching for new active molecules.(AU)

Transfusion of ABO non-identical platelets increases the severity of trauma patients at ICU admission

ABSTRACT Background: Transfusion of ABO-compatible non-identical platelets (PTLs), fresh plasma (FP) and red blood cells (RBCs) has been associated with increased morbidity and mortality of recipients. Trauma victims are frequently exposed to ABO non-identical products, given the need for emergency transfusions. Our goal was to evaluate the impact of the transfusion of ABO non-identical blood products on the severity and all-cause 30-day mortality of trauma patients. Methods: This was a retrospective single-center cohort, which included trauma patients who received emergency transfusions in the first 24 h of hospitalization. Patients were divided in two groups according to the use of <3 or ≥3 ABO non-identical blood products. The patient severity, measured by the Acute Physiology and Chronic Health Evaluation (APACHEII) score at ICU admission, and the 30-day mortality were compared between groups. Results: Two hundred and sixteen trauma patients were enrolled. Of these, 21.3% received ≥3 ABO non-identical blood products (RBCs, PLTs and FP or cryoprecipitate). The transfusion of ≥3 ABO non-identical blood products in the first 24 h of hospitalization was independently associated with a higher APACHEII score at ICU admission (OR = 3.28 and CI95% = 1.48-7.16). Transfusion of at least one unit of ABO non-identical PTLs was also associated with severity (OR = 10.89 and CI95% = 3.38-38.49). Transfusion of ABO non-identical blood products was not associated with a higher 30-day mortality in the studied cohort. Conclusion: The transfusion of ABO non-identical blood products and, especially, of ABO non-identical PLTs may be associated with the greater severity of trauma patients at ICU admission. The transfusion of ABO non-identical blood products in the trauma setting is not without risks.

Th17/Treg-Related Intracellular Signaling in Patients with Chronic Obstructive Pulmonary Disease: Comparison between Local and Systemic Responses.

Th17/Treg imbalance plays a pivotal role in COPD development and progression. We aimed to assess Th17/Treg-related intracellular signaling at different COPD stages in local and systemic responses. Lung tissue and/or peripheral blood samples were collected and divided into non-obstructed (NOS), COPD stages I and II, and COPD stages III and IV groups. Gene expression of STAT3 and -5, RORγt, Foxp3, interleukin (IL)-6, -17, -10, and TGF-ß was assessed by RT-qPCR. IL-6, -17, -10, and TGF-ß levels were determined by ELISA. We observed increased STAT3, RORγt, Foxp3, IL-6, and TGF-ß gene expression and IL-6 levels in the lungs of COPD I and II patients compared to those of NOS patients. Regarding the systemic response, we observed increased STAT3, RORγt, IL-6, and TGF-ß gene expression in the COPD III and IV group and increased IL-6 levels in the COPD I and II group. STAT5 was increased in COPD III and IV patients, although there was a decrease in Foxp3 expression and IL-10 levels in the COPD I and II and COPD III and IV groups, respectively. We demonstrated that an increase in Th17 intracellular signaling in the lungs precedes this increase in the systemic response, whereas Treg intracellular signaling varies between the compartments analyzed in different COPD stages.

Update on and future perspectives for the diagnosis of alpha-1 antitrypsin deficiency in Brazil.

Alpha-1 antitrypsin deficiency (AATD) is a rare genetic disorder caused by a mutation in the SERPINA1 gene, which encodes the protease inhibitor alpha-1 antitrypsin (AAT). Severe AATD predisposes individuals to COPD and liver disease. Early diagnosis is essential for implementing preventive measures and limiting the disease burden. Although national and international guidelines for the diagnosis and management of AATD have been available for 20 years, more than 85% of cases go undiagnosed and therefore untreated. In Brazil, reasons for the underdiagnosis of AATD include a lack of awareness of the condition among physicians, a racially diverse population, serum AAT levels being assessed in a limited number of individuals, and lack of convenient diagnostic tools. The diagnosis of AATD is based on laboratory test results. The standard diagnostic approach involves the assessment of serum AAT levels, followed by phenotyping, genotyping, gene sequencing, or combinations of those, to detect the specific mutation. Over the past 10 years, new techniques have been developed, offering a rapid, minimally invasive, reliable alternative to traditional testing methods. One such test available in Brazil is the A1AT Genotyping Test, which simultaneously analyzes the 14 most prevalent AATD mutations, using DNA extracted from a buccal swab or dried blood spot. Such advances may contribute to overcoming the problem of underdiagnosis in Brazil and elsewhere, as well as being likely to increase the rate detection of AATD and therefore mitigate the harmful effects of delayed diagnosis.

Knowledge of and attitudes toward the WHO MPOWER policies to reduce tobacco use at the population level: a comparison between third-year and sixth-year medical students.

OBJECTIVE: To evaluate third- and sixth-year medical students in Brazil in terms of their knowledge of and attitudes toward the WHO MPOWER policies to reduce tobacco use. METHODS: The WHO Global Health Professions Student Survey was applied in five cohorts of medical students evaluated in their third and sixth years of medical school, between 2008 and 2015. Comparisons were drawn between the two years of medical school in terms of the proportions of students who experimented with or used tobacco products in the last 30 days prior to the survey; knowledge of and compliance with smoke-free policies on the university campus; formal training on smoking cessation strategies; and self-recognition as role models for patients/society. RESULTS: Of the 943 students who completed the survey, approximately 6% had smoked cigarettes in the last 30 days prior to the survey. Comparing the third and sixth years of medical school, we observed a significant increase in the proportion of students who were knowledgeable about smoking cessation strategies (22.74% vs. 95.84%; p < 0.001) and in that of those who recognized their role as models for patients/society (84.5% vs. 89.7%; p = 0.023). Student knowledge of the smoking policies on the university campus was associated with an increase in self-recognition as role models (adjusted absolute difference = 6.7%; adjusted p = 0.050). CONCLUSIONS: Knowledge of smoking cessation strategies and self-recognition as role models for patients/society increase over the course of medical school and are associated with the implementation of smoke-free policies.

Transfusion of ABO non-identical platelets increases the severity of trauma patients at ICU admission.

BACKGROUND: Transfusion of ABO-compatible non-identical platelets (PTLs), fresh plasma (FP) and red blood cells (RBCs) has been associated with increased morbidity and mortality of recipients. Trauma victims are frequently exposed to ABO non-identical products, given the need for emergency transfusions. Our goal was to evaluate the impact of the transfusion of ABO non-identical blood products on the severity and all-cause 30-day mortality of trauma patients. METHODS: This was a retrospective single-center cohort, which included trauma patients who received emergency transfusions in the first 24 h of hospitalization. Patients were divided in two groups according to the use of <3 or ≥3 ABO non-identical blood products. The patient severity, measured by the Acute Physiology and Chronic Health Evaluation (APACHEII) score at ICU admission, and the 30-day mortality were compared between groups. RESULTS: Two hundred and sixteen trauma patients were enrolled. Of these, 21.3% received ≥3 ABO non-identical blood products (RBCs, PLTs and FP or cryoprecipitate). The transfusion of ≥3 ABO non-identical blood products in the first 24 h of hospitalization was independently associated with a higher APACHEII score at ICU admission (OR = 3.28 and CI95% = 1.48-7.16). Transfusion of at least one unit of ABO non-identical PTLs was also associated with severity (OR = 10.89 and CI95% = 3.38-38.49). Transfusion of ABO non-identical blood products was not associated with a higher 30-day mortality in the studied cohort. CONCLUSION: The transfusion of ABO non-identical blood products and, especially, of ABO non-identical PLTs may be associated with the greater severity of trauma patients at ICU admission. The transfusion of ABO non-identical blood products in the trauma setting is not without risks.

Characterization of the severity of dyspnea in patients with bronchiectasis: correlation with clinical, functional, and tomographic aspects.

OBJECTIVE: To characterize a population of patients with bronchiectasis, correlating clinical, radiological, and functional aspects with the severity of dyspnea. METHODS: This was a cross-sectional study involving adult patients with HRCT-confirmed bronchiectasis, categorized according to the severity of dyspnea (as being mildly or severely symptomatic, on the basis of the modified Medical Research Council scale). We correlated the severity of dyspnea with clinical parameters, functional parameters (spirometry values, lung volumes, and DLCO), and CT parameters. RESULTS: We evaluated 114 patients, 47 (41%) of whom were men. The median age (interquartile range) was 42 years (30-55 years). The most common form was idiopathic bronchiectasis. Of the 114 patients, 20 (17.5%) were colonized with Pseudomonas aeruginosa and 59 (51.8%) were under continuous treatment with macrolides. When we applied the Exacerbation in the previous year, FEV1, Age, Colonization, Extension, and Dyspnea score, the severity of dyspnea was categorized as moderate in 54 patients (47.4%), whereas it was categorized as mild in 50 (43.9%) when we applied the Bronchiectasis Severity Index. The most common lung function pattern was one of obstruction, seen in 95 patients (83.3%), and air trapping was seen in 77 patients (68.7%). The prevalence of an obstructive pattern on spirometry was higher among the patients with dyspnea that was more severe, and most functional parameters showed reasonable accuracy in discriminating between levels of dyspnea severity. CONCLUSIONS: Patients with bronchiectasis and dyspnea that was more severe had greater functional impairment. The measurement of lung volumes complemented the spirometry data. Because bronchiectasis is a complex, heterogeneous condition, a single variable does not seem to be sufficient to provide an overall characterization of the clinical condition.