Guidelines for the management of adult lower respiratory tract infections (LRTIs) were first published by a Task Force of the European Respiratory Society (ERS) in 1998 [1]. In 2005, a completely revised version was produced, this time by a joint Task Force of the ERS and the European Society for Clinical Microbiology and Infectious Diseases (ESCMID) [2]. They used up-to-date methodology for guideline development, including a transparent and objective systematic literature search strategy, and evidence and recommendation grading [2]. Now, 6 yrs later, a joint Task Force of the two Societies, using the same methodology as in 2005, has produced a further update of these guidelines incorporating publications through to May 2010. The Task Force included an epidemiologist with expertise in guideline methodology and experts in the specialty areas relevant to LRTI management, including general practice, microbiology, infectious diseases, respiratory medicine, intensive care and public health.

A short version of the guidelines containing only the recommendations has now been published in Clinical Microbiology and Infection [3], with more detailed versions available on each Society’s website. The guidelines cover the breadth of adult community-acquired respiratory infection, including prevention (both vaccine- and nonvaccine-related), infections in the community and infections in those admitted to hospital, including pneumonia, exacerbations of chronic obstructive pulmonary disease (COPD) and exacerbations of bronchiectasis. The …

https://erj.ersjournals.com/content/erj/26/6/1138.full.pdf

Guidelines for the management of adult lower respiratory tract infections

https://www.clinicalmicrobiologyandinfection.com/article/S1198-743X(14)61403-8/pdf

Guidelines for the management of adult lower respiratory tract infections - Summary

Rationale: Controversy still exists in the international literature regarding the need to use antimicrobials covering atypical pathogens when initially treating hospitalized patients with community-acquired pneumonia (CAP). In different regions of the world, monotherapy with a β-lactam antimicrobial is common.Objectives: We sought to correlate the incidence of CAP due to atypical pathogens in different regions of the world with the proportion of patients treated with an atypical regimen in those same regions. In addition, we sought to compare clinical outcomes of patients with CAP treated with and without atypical coverage.Methods: A secondary analysis was performed using two comprehensive international databases. World regions were defined as North America (I), Europe (II), Latin America (III), and Asia and Africa (IV). Time to reach clinical stability, length of hospital stay, and mortality were compared between patients treated with and without atypical coverage.Measurements and Main Results: The incid...

https://www.atsjournals.org/doi/pdf/10.1164/rccm.200603-350OC

A worldwide perspective of atypical pathogens in community-acquired pneumonia.

Background: There is much controversy about the ideal approach to the management of community acquired pneumonia (CAP). Recommendations differ from a pathogen directed approach to an empirical strategy with broad spectrum antibiotics. Methods: In a prospective randomised open study performed between 1998 and 2000, a pathogen directed treatment (PDT) approach was compared with an empirical broad spectrum antibiotic treatment (EAT) strategy according to the ATS guidelines of 1993 in 262 hospitalised patients with CAP. Clinical efficacy was primarily determined by the length of hospital stay (LOS). Secondary outcome parameters for clinical efficacy were assessment of therapeutic failure on antibiotics, 30 day mortality, duration of antibiotic treatment, resolution of fever, side effects, and quality of life. Results: Three hundred and three patients were enrolled in the study; 41 were excluded, leaving 262 with results available for analysis. No significant differences were found between the two treatment groups in LOS, 30 day mortality, clinical failure, or resolution of fever. Side effects, although they did not have a significant influence on the outcome parameters, occurred more frequently in patients in the EAT group than in those in the PDT group (60% v 17%, 95% CI −0.5 to −0.3; p Conclusions: An EAT strategy with broad spectrum antibiotics for the management of hospitalised patients with CAP has comparable clinical efficacy to a PDT approach.

https://thorax.bmj.com/content/thoraxjnl/60/8/672.full.pdf

Comparison between pathogen directed antibiotic treatment and empirical broad spectrum antibiotic treatment in patients with community acquired pneumonia: a prospective randomised study

Background. The natural history of the resolution of infectious parameters in patients with community-acquired pneumonia (CAP) is not completely known. The aim of our study was to identify those factors related to host characteristics, the severity of pneumonia, and treatment that influence clinical stability. Methods. In a prospective, multicenter, observational study, we observed 1424 patients with CAP who were admitted to 15 Spanish hospitals. The main outcome variable was the number of days needed to reach clinical stability (defined as a temperature of ≤37.2°C, a heart rate of ≤100 beats/min, a respiratory rate of ≤24 breaths/ min, systolic blood pressure of ≥90 mm Hg, and oxygen saturation ≥90% or arterial oxygen partial pressure of ≥60 mm Hg). Results. The median time to stability was 4 days. A Cox proportional hazard model identified 6 independent variables recorded during the first 24 h after hospital admission related to the time needed to reach stability: dyspnea (hazard ratio [HR], 0.76), confusion (HR, 0.66), pleural effusion (HR, 0.67), multilobed CAP (HR, 0.72), high pneumonia severity index (HR, 0.73), and adherence to the Spanish guidelines for treatment of CAP (HR, 1.22). A second Cox model was performed that included complications and response to treatment. This model identified the following 10 independent variables: chronic bronchitis (HR, 0.81), dyspnea (HR, 0.79), confusion (HR, 0.61), multilobed CAP (HR, 0.84), initial severity of disease (HR, 0.73), treatment failure (HR, 0.31), cardiac complications (HR, 0.66), respiratory complications (HR, 0.77), empyema (HR, 0.57), and admission to the intensive care unit (HR, 0.57). Conclusions. Some characteristics of CAP are useful at the time of hospital admission to identify patients who will need a longer hospital stay to reach clinical stability. Empirical treatment that follows guidelines is associated with earlier clinical stability. Complications and treatment failure delay clinical stability.

Reaching stability in community-acquired pneumonia: the effects of the severity of disease, treatment, and the characteristics of patients.

The total medical costs of community-acquired pneumonia are directly related to the costs of hospital admission and length of stay. The aim of the present study was to evaluate the reasons for prolonged duration of stay in patients stratified in five risk classes for death, and to identify factors associated with prolonged stay. The study population consisted of 295 patients. According to lower (classes I, II, III) or to higher (classes IV, V) risk, the target duration of hospitalization was set at 5 and 7 days, respectively. The causes of prolonged hospitalization were classified as pneumonia-related, complications, unstable comorbid diseases and nonclinical factors. The overall percentage of patients with appropriate duration of hospitalization was 32%. Causes of prolonged hospitalization were related mainly to pneumonia (32%) from all risk classes. Morbid complications and instability of the underlying illness were greater in class V patients. Nonclinical factors were present in 29.5% of cases. Hypoxaemia, anaemia, hypoalbuminaemia, and complications appearing before 72 h were associated with prolonged hospitalization. The cause of prolonged hospitalization of patients with community-acquired pneumonia is multifactorial, depending mainly on pneumonia and comorbid conditions but there is a large number of unnecessary hospitalization days that could be reduced by improving the efficiency of hospital care.

https://erj.ersjournals.com/content/erj/18/1/151.full.pdf

Initial risk class and length of hospital stay in community-acquired pneumonia

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Initial risk class and length of hospital stay in community-acquired pneumonia