COPD in SARS-CoV-2 pandemic. baseline characteristics related to hospital admissions.

OBJECTIVE: To develop a predictive model for COPD patients admitted for COVID-19 to support clinical decision-making. METHOD: Retrospective cohort study of 1313 COPD patients with microbiological confirmation of SARS-CoV-2 infection. The sample was randomly divided into two subsamples, for the purposes of derivation and validation of the prediction rule (60% and 40%,respectively). Data collected for this study included sociodemographic characteristics, baseline comorbidities, baseline treatments, and other background data. Multivariable logistic regression analysis was used to develop the predictive model. RESULTS: Male sex, older age, hospital admissions in the previous year, flu vaccination in the previous season, a Charlson Index>3 and a prescription of renin-angiotensin aldosterone system inhibitors at baseline were the main risk factors for hospital admission. The AUC of the categorized risk score was 0.72 and 0.69 in the derivation and validation samples, respectively. Based on the risk score, four groups were identified with a risk of hospital admission ranging from 21% to 80%. CONCLUSIONS: We propose a classification system to identify COPD people with COVID-19 with a higher risk of hospitalization, and indirectly, more severe disease, that is easy to use in primary care, as well as hospital emergency room settings to help clinical decision-making. CLINICALTRIALS.GOV IDENTIFIER: NCT04463706.

Complications and hospital admission in the following 90 days after lung cryobiopsy performed in interstitial lung disease.

Transbronchial lung cryobiopsy (TBLC) is an emerging technique for the diagnosis of interstitial lung disease (ILD), but its risk benefit ratio has been questioned. The objectives of this research were to describe any adverse events that occur within 90 days following TBLC and to identify clinical predictors that could help to detect the population at risk. METHODS: We conducted an ambispective study including all patients with suspected ILD who underwent TBLC. Data were collected concerning the safety profile of this procedure and compared to various clinical variables. RESULTS: Overall, 257 TBLCs were analysed. Complications were observed in 15.2% of patients; nonetheless, only 5.4% of all patients required hospital admission on the day of the procedure. In the 30 and 90 days following the TBLC, rates of readmission were 1.3% and 3.5% and of mortality were 0.38%, and 0.78% respectively. Two models were built to predict early admission (AUC 0.72; 95% CI 0.59-0.84) and overall admission (AUC 0.76; 95% CI 0.67-0.85). CONCLUSIONS: Within 90 days after TBLC, 8.9% of patients suffered a complication serious enough to warrant hospital admission. Modified MRC dyspnoea score ≥2, FVC<50%, and a Charlson Comorbidity Index score ≥2 were factors that predicted early and overall admission.

Etiology of community-acquired pneumonia in a population-based study: link between etiology and patients characteristics, process-of-care, clinical evolution and outcomes.

BACKGROUND: The etiologic profile of community-acquired pneumonia (CAP) for each age group could be similar among inpatients and outpatients. This fact brings up the link between etiology of CAP and its clinical evolution and outcome. Furthermore, the majority of pneumonia etiologic studies are based on hospitalized patients, whereas there have been no recent population-based studies encompassing both inpatients and outpatients. METHODS: To evaluate the etiology of CAP, and the relationship among the different pathogens of CAP to patients characteristics, process-of-care, clinical evolution and outcomes, a prospective population-based study was conducted in Spain from April 1, 2006, to June 30, 2007. Patients (age >18) with CAP were identified through the family physicians and the hospital area. RESULTS: A total of 700 patients with etiologic evaluation were included: 276 hospitalized and 424 ambulatory patients. We were able to define the aetiology of pneumonia in 55.7% (390/700). The most frequently isolated organism was S. pneumoniae (170/390, 43.6%), followed by C. burnetti (72/390, 18.5%), M. pneumoniae (62/390, 15.9%), virus as a group (56/390, 14.4%), Chlamydia species (39/390, 106%), and L. pneumophila (17/390, 4.4%). The atypical pathogens and the S. pneumoniae are present in pneumonias of a wide spectrum of severity and age. Patients infected by conventional bacteria were elderly, had a greater hospitalization rate, and higher mortality within 30 days. CONCLUSIONS: Our study provides information about the etiology of CAP in the general population. The microbiology of CAP remains stable: infections by conventional bacteria result in higher severity, and the S. pneumoniae remains the most important pathogen. However, atypical pathogens could also infect patients in a wide spectrum of severity and age.

Study of community-acquired pneumonia: incidence, patterns of care, and outcomes in primary and hospital care.

BACKGROUND: To asses the incidence, patterns of care, and outcomes of community-acquired pneumonia (CAP) in the population of a defined geographic area. METHODS: Prospective study conducted from April 1, 2006, to June 30, 2007. All adult patients (age ≥18) with CAP in the Comarca Interior region of northern Spain were identified through the region's 150 family physicians and the emergency department (ED) of the area's general teaching hospital. RESULTS: During a 15-month period, 960 patients with CAP were identified: 418 hospitalized and 542 ambulatory patients. The hospitalization rate was 43.5% and the global 30-day mortality was 4% (38 patients). Of the patients treated at home, most (90.4%) had mild pneumonia, only 3.1% (17 patients) were subsequently hospitalized, with a 30-day mortality rate of 0%. However, 48.9% were not treated according to antibiotic recommendations of the Spanish Society of Pneumology. Mean duration of return to daily activity was 18.8 days for the entire population. The incidence study was restricted to the first 12 months, during which 787 patients fulfilled the inclusion criteria. This represented an incidence of pneumonia of 3.1/1000 adults per year. Both the incidence of CAP and hospitalization for it rose with age. CONCLUSIONS: Our study offers information about CAP in the general population and provides feedback for the management of CAP. Although the selection of patients to be treated at home was appropriate, the choice of empiric antibiotic therapy for ambulatory CAP was problematic.

Prospective comparison of severity scores for predicting clinically relevant outcomes for patients hospitalized with community-acquired pneumonia.

BACKGROUND: The comparative accuracy and discriminatory power of three validated rules for predicting clinically relevant outcomes other than mortality in patients hospitalized with community-acquired pneumonia (CAP) are unknown. METHODS: We prospectively compared the newly developed severe community-acquired pneumonia (SCAP) score, pneumonia severity index (PSI), and the British Thoracic Society confusion, urea > 7 mmol/L, respiratory rate > or = 30 breaths/min, BP < 90 mm Hg systolic or < 60 mm Hg diastolic, age > or = 65 years (CURB-65) rule in an internal validation cohort of 1,189 consecutive adult inpatients with CAP from one hospital and an external validation cohort of 671 consecutive adult inpatients from three other hospitals. Major adverse outcomes were admission to ICU, need for mechanical ventilation, progression to severe sepsis, or treatment failure. Mean hospital length of stay (LOS) was also evaluated. The rules were compared based on sensitivity, specificity, and area under the curve (AUC) of the receiver operating characteristic. RESULTS: The rate of all adverse outcomes and hospital LOS increased directly with increasing SCAP, PSI, or CURB-65 scores (p < 0.001) in both cohorts. Patients classified as high risk by the SCAP score showed higher rates of adverse outcomes (ICU admission, 35.8%; mechanical ventilation, 16.4%; severe sepsis, 98.5%; treatment failure, 22.4%) than PSI and CURB-65 high-risk classes. The discriminatory power of SCAP, as measured by AUC, was 0.75 for ICU admission, 0.76 for mechanical ventilation, 0.79 for severe sepsis, and 0.61 for treatment failure in the external validation cohort. AUC differences with PSI or CURB-65 were found. CONCLUSIONS: The SCAP score is as accurate or better than other current scoring systems in predicting adverse outcomes in patients hospitalized with CAP while helping classify patients into different categories of increasing risk for potentially closer monitoring.

Declining length of hospital stay for pneumonia and postdischarge outcomes.

OBJECTIVE: This study was designed to assess 8-year trends in the duration of hospitalization for community-acquired pneumonia and to evaluate the impact of declining length of stay on postdischarge short-term readmission and mortality. METHODS: We conducted a prospective observational cohort study of 1886 patients with community-acquired pneumonia who were discharged from a single hospital between March 1, 2000, and June 30, 2007. The main outcomes measured were all-cause mortality and hospital readmission during the 30-day period after discharge. Regression models were used to identify risk factors associated with hospital length of stay and the adjusted associations between length of stay and mortality and readmission. RESULTS: Factors associated with a longer hospital stay included the number of comorbid conditions, high risk classification on the Pneumonia Severity Index, bilateral or multilobe radiographic involvement, and treatment failure. Patients treated with an appropriate antibiotic were less likely to have an increased length of stay. The mean length of stay was significantly shorter during the 2006 to 2007 period (3.6 days) than during the 2000 to 2001 period (5.6 days, P<.001). Despite the reduction in length of stay, there were no significant differences in the likelihood of death or readmission at 30 days between the 2 time periods. Adjusted multivariate analysis showed that patients with hospital stays less than 3 days did not have significant increases in postdischarge outcomes. CONCLUSION: The marked decreased in the length of stay for patients hospitalized with community-acquired pneumonia since 2000 has not been accompanied by an increase in short-term mortality or hospital readmission.

Pneumonia: criteria for patient instability on hospital discharge.

BACKGROUND: A study was undertaken to identify and weigh at the time of hospital discharge simple clinical variables that could predict short-term outcomes in patients with pneumonia. METHODS: In a prospective observational cohort study of 870 patients discharged alive after hospitalization for pneumonia, we collected oxygenation and vital signs on discharge and assessed mortality and readmission within 30 days. From the beta-parameter obtained in a multivariate Cox proportional hazard regression model, a score was assigned to each predictive variable. The effects of instability at discharge on outcomes within 30 days thereafter were examined by adjusted models with use of the pneumonia severity index at hospital admission, the length of stay, the Charlson comorbidity index, or the preillness functional status. RESULTS: Four variables related to a 30-day mortality rate from all causes were identified in the multivariate model; these included one major criterion (temperature >37.5 degrees C) and three minor criteria (systolic BP < 90 mm Hg or diastolic BP < 60 mm Hg, respiratory rate > 24 breaths/min, and oxygen saturation < 90%). The developed score remained significantly associated with a higher risk-adjusted rate of death. Patients with a score > or = 2 (one major criterion or two minor criteria) had a sixfold-greater risk-adjusted hazard ratio (HR) of death (HR, 5.8; 95% confidence interval, 2.5 to 13.1). CONCLUSIONS: Four criteria of instability on discharge seem to be related to the mortality rate after discharge, but each of the factors must be weighed differently. The resulting score is a simple alternative that can be used by clinicians in the discharge process.

Development and validation of a clinical prediction rule for severe community-acquired pneumonia.

RATIONALE: Objective strategies are needed to improve the diagnosis of severe community-acquired pneumonia in the emergency department setting. OBJECTIVES: To develop and validate a clinical prediction rule for identifying patients with severe community-acquired pneumonia, comparing it with other prognostic rules. METHODS: Data collected from clinical information and physical examination of 1,057 patients visiting the emergency department of a hospital were used to derive a clinical prediction rule, which was then validated in two different populations: 719 patients from the same center and 1,121 patients from four other hospitals. MEASUREMENTS AND MAIN RESULTS: In the multivariate analyses, eight independent predictive factors were correlated with severe community-acquired pneumonia: arterial pH < 7.30, systolic blood pressure < 90 mm Hg, respiratory rate > 30 breaths/min, altered mental status, blood urea nitrogen > 30 mg/dl, oxygen arterial pressure < 54 mm Hg or ratio of arterial oxygen tension to fraction of inspired oxygen < 250 mm Hg, age > or = 80 yr, and multilobar/bilateral lung affectation. From the beta parameter obtained in the multivariate model, a score was assigned to each predictive variable. The model shows an area under the curve of 0.92. This rule proved better at identifying patients evolving toward severe community-acquired pneumonia than either the modified American Thoracic Society rule, the British Thoracic Society's CURB-65, or the Pneumonia Severity Index. CONCLUSIONS: A simple score using clinical data available at the time of the emergency department visit provides a practical diagnostic decision aid, and predicts the development of severe community-acquired pneumonia.

[Evaluation of clinical practice in patients admitted with community-acquired pneumonia over a 4-year period]. / Evaluación de la práctica clínica en los pacientes ingresados por neumonía adquirida en la comunidad durante un período de 4 años.

OBJECTIVE: Since March 2000 we have been using a clinical practice guideline in the management of patients diagnosed with community-acquired pneumonia (CAP). The objective of this study was to analyze the evolution of quality of care received by these patients. PATIENTS AND METHODS: This was a prospective observational study comparing the process of care and outcomes of 4 consecutive 1-year periods (March 1, 2000 through February 29, 2004) in patients admitted for CAP. RESULTS: Over the 4 years studied, the following statistically significant trends were observed: reductions in hospital admissions (P< .001), length of hospital stay (P< .05), and total duration of antibiotic treatment (P< .05); and increases in the coverage of atypical pathogens (P< .001) and administration of antibiotics within 8 hours of hospital arrival (P< .001). No significant differences were found in readmissions within 30 days, or in-hospital and 30-day mortality. Two other areas for improvement were also identified: a low percentage of admissions to the intensive care unit (4.4%) and the rate of unnecessary hospitalization of low-risk patients (36.8%). CONCLUSIONS: Systematic monitoring of the indicators of our clinical guidelines provided us with information about our clinical practice and facilitated an evaluation of the same. Many of these indicators were found to have evolved favorably and areas of improvement were identified.

Evaluación de la práctica clínica en los pacientes ingresados por neumonía adquirida en la comunidad durante un período de 4 años / Evaluation of clinical practice in patients admitted with community-acquired pneumonia over a 4-year period

Objetivo: En nuestro hospital utilizamos desde marzo de 2000 una guía clínica para el tratamiento de los pacientes diagnosticados de neumonía adquirida en la comunidad (NAC). El objetivo de este estudio ha sido analizar la evolución de la calidad del tratamiento facilitado a los pacientes ingresados por NAC. Pacientes y métodos: Se ha realizado un estudio observacional prospectivo. Se compararon, en 4 períodos consecutivos de 1 año (1 de marzo de 2000 a 29 de febrero de 2004), el tratamiento y los resultados de los pacientes ingresados por NAC. Resultados: A lo largo de los 4 años se demostraron tendencias estadísticamente significativas en los siguientes indicadores: reducción de los ingresos hospitalarios (p < 0,001), de la duración de la estancia hospitalaria (p < 0,05) y de la duración total del tratamiento antibiótico (p < 0,05); aumento de la cobertura de gérmenes atípicos (p < 0,001) y de la administración del antibiótico en las primeras 8 h (p < 0,001). No se observaron diferencias significativas en la mortalidad intrahospitalaria, en la mortalidad en 30 días y en los reingresos en 30 días. También se identificaron 2 áreas de mejora: el bajo porcentaje de ingresos en la unidad de cuidados intensivos (4,4%) y los ingresos injustificados entre los pacientes de riesgo bajo (36,8%). Conclusiones: El control sistemático de los indicadores de nuestra guía clínica nos permitió conocer y evaluar nuestra práctica clínica. Se comprobó una evolución favorable de muchos de estos indicadores y se identificaron áreas de mejora

Objective: Since March 2000 we have been using a clinical practice guideline in the management of patients diagnosed with community-acquired pneumonia (CAP). The objective of this study was to analyze the evolution of quality of care received by these patients. Patients and methods: This was a prospective observational study comparing the process of care and outcomes of 4 consecutive 1-year periods (March 1, 2000 through February 29, 2004) in patients admitted for CAP. Results: Over the 4 years studied, the following statistically significant trends were observed: reductions in hospital admissions (P<.001), length of hospital stay (P<.05), and total duration of antibiotic treatment (P<.05); and increases in the coverage of atypical pathogens (P<.001) and administration of antibiotics within 8 hours of hospital arrival (P<.001). No significant differences were found in readmissions within 30 days, or in-hospital and 30-day mortality. Two other areas for improvement were also identified: a low percentage of admissions to the intensive care unit (4.4%) and the rate of unnecessary hospitalization of low-risk patients (36.8%). Conclusions: Systematic monitoring of the indicators of our clinical guidelines provided us with information about our clinical practice and facilitated an evaluation of the same. Many of these indicators were found to have evolved favorably and areas of improvement were identified

Management of community-acquired pneumonia and secular trends at different hospitals.

STUDY OBJECTIVES: The goal of this study was to assess variability in the management of patients admitted to hospitals with community-acquired pneumonia (CAP), and changes in secular trends of this condition. METHODS: Observational study carried out, in 5 teaching hospitals, in northern Spain of patients admitted with CAP between March 1,1998 and March 1,1999 (baseline period), and between March 1, 2000 and September 30, 2001 (follow-up period). Clinical histories were analyzed retrospectively for relevant parameters for process-of-care and outcome performance. Those parameters among hospitals during the baseline period were compared. For each hospital, changes in these parameters between baseline and follow-up were also measured. All parameters were adjusted for disease severity. RESULTS: A total of 844 patients were included in the baseline period, and 654 in the follow-up period. During the baseline period, adjusted analyses revealed statistically significant differences in all process-of-care parameters except the coverage of atypical pathogens. With regard to clinical outcomes, however, only the 30-day readmission rate was significantly different (P=0.03). Adjusted mean length of stay ranged from 6.3 to 9.2 days (P<0.0001). In adjusted analyses of temporal changes within hospitals for process-of-care and outcome performance, revealed few statistically significant differences. CONCLUSIONS: Variability discovered between hospitals in the management of patients in the absence of relevant secular changes in each hospital points out the necessity to implement measures designed to reduce such variability between hospitals and to improve the quality of medical treatment.

Improvement of process-of-care and outcomes after implementing a guideline for the management of community-acquired pneumonia: a controlled before-and-after design study.

BACKGROUND: Studies investigating the impact of guideline implementation for inpatient management of community-acquired pneumonia (CAP) usually have methodological limitations. We present a controlled study that compared interventions before and after the implementation of a practice guideline. METHODS: Clinical and demographic characteristics, as well as process-of-care and outcome indicators, were recorded for all patients with CAP who were admitted to Galdakao Hospital (Galdakao, Spain) in the 19-month period after the implementation, on 1 March 2000, of a guideline for the treatment of CAP. These data were also recorded for all patients with CAP who were admitted to this hospital during the year before the guideline was implemented, as well as for randomly selected inpatients with CAP at 4 other hospitals during both periods (i.e., before and after guideline implementation) who were chosen as an external comparison group. Multivariate linear and logistic regression models were employed for adjustment. RESULTS: Guideline implementation resulted in shorter durations of antibiotic treatment (P<.001) and intravenous treatment (P<.001), better coverage of atypical pathogens (P<.001), and improved appropriateness of antibiotic treatment (P<.001), compared with the period before the guideline was implemented. The adjusted analyses revealed decreases in 30-day mortality (odds ratio [OR], 2.14; 95% confidence interval [CI], 1.23-3.72) and in-hospital mortality (OR, 2.46; 95% CI, 1.37-4.41) and a 1.8-day reduction in the duration of hospital stay. In the control hospitals, there were small but statistically insignificant changes in these indicators for admitted patients. CONCLUSIONS: This study, which was performed with an adequate, controlled before-and-after intervention design, demonstrated significant improvements in both process-of-care and outcome indicators after implementation of a guideline for treating CAP.