M A Tazón-Varela1, H Alonso-Valle2, P Muñoz-Cacho3, J Gallo-Terán4, X Piris-García5, L A Pérez-Mier6. 1. Servicio de Urgencias, Hospital de Laredo, Laredo, Cantabria, España. Electronic address: tazovare@yahoo.es. 2. Servicio de Urgencias, Hospital Universitario Marqués de Valdecilla, Santander, Cantabria, España. 3. Unidad Docente Gerencia de Atención Primaria Santander-Laredo, Laredo, Cantabria, España. 4. Servicio de Radiodiagnóstico, Hospital del Bierzo, Ponferrada, León, España. 5. Centro de Salud Cotolino I, Castro Urdiales, Cantabria, España. 6. Servicio de Urgencias, Hospital de Laredo, Laredo, Cantabria, España.
Abstract
INTRODUCTION: Knowing the most common microorganisms in our environment can help us to make proper empirical treatment decisions. The aim is to identify those microorganisms causing community-acquired pneumonia. PATIENTS AND METHODS: An observational, descriptive and prospective study was conducted, including patients over 14 years with a clinical and radiographic diagnosis of community-acquired pneumonia during a 383 consecutive day period. A record was made of sociodemographic variables, personal history, prognostic severity scales, progress, and pathogenic agents. The aetiological diagnosis was made using blood cultures, detection of Streptococcus pneumoniae and Legionella pneumophila urinary antigens, sputum culture, influenza virus and Streptococcus pyogenes detection. Categorical variables are presented as absolute values and percentages, and continuous variables as their means and standard deviations. RESULTS: Of the 287 patients included in the study (42% women, mean age 66±22 years), 10.45% died and 70% required hospital admission. An aetiological diagnosis was achieved in 43 patients (14.98%), with 16 microorganisms found in 59 positive samples. The most frequently isolated pathogen was Streptococcus pneumonia (24/59, 41%), followed by gram-negative enteric bacilli, Klebsiella pneumonia, Escherichia coli, Serratia marcescens and Enterobacter cloacae isolated in 20% of the samples (12/59), influenza virus (5/59, 9%), methicillin-resistant Staphylococcus aureus (3/59, 5%), Pseudomonas aeruginosa (2/59, 3%), Moraxella catarrhalis (2/59, 3%), Legionella pneumophila (2/59, 3%), and Haemophilus influenza (2/59, 3%). Polymicrobial infections accounted for 14% (8/59). CONCLUSION: A high percentage of atypical microorganisms causing community-acquired pneumonia were found.
INTRODUCTION: Knowing the most common microorganisms in our environment can help us to make proper empirical treatment decisions. The aim is to identify those microorganisms causing community-acquired pneumonia. PATIENTS AND METHODS: An observational, descriptive and prospective study was conducted, including patients over 14 years with a clinical and radiographic diagnosis of community-acquired pneumonia during a 383 consecutive day period. A record was made of sociodemographic variables, personal history, prognostic severity scales, progress, and pathogenic agents. The aetiological diagnosis was made using blood cultures, detection of Streptococcus pneumoniae and Legionella pneumophila urinary antigens, sputum culture, influenza virus and Streptococcus pyogenes detection. Categorical variables are presented as absolute values and percentages, and continuous variables as their means and standard deviations. RESULTS: Of the 287 patients included in the study (42% women, mean age 66±22 years), 10.45% died and 70% required hospital admission. An aetiological diagnosis was achieved in 43 patients (14.98%), with 16 microorganisms found in 59 positive samples. The most frequently isolated pathogen was Streptococcus pneumonia (24/59, 41%), followed by gram-negative enteric bacilli, Klebsiella pneumonia, Escherichia coli, Serratia marcescens and Enterobacter cloacae isolated in 20% of the samples (12/59), influenza virus (5/59, 9%), methicillin-resistant Staphylococcus aureus (3/59, 5%), Pseudomonas aeruginosa (2/59, 3%), Moraxella catarrhalis (2/59, 3%), Legionella pneumophila (2/59, 3%), and Haemophilus influenza (2/59, 3%). Polymicrobial infections accounted for 14% (8/59). CONCLUSION: A high percentage of atypical microorganisms causing community-acquired pneumonia were found.
Authors: Manuel Antonio Tazón-Varela; Jon Ortiz de Salido-Menchaca; Pedro Muñoz-Cacho; Enara Iriondo-Bernabeu; María Josefa Martos-Almagro; Emma Lavín-López; Ander Vega-Zubiaur; Edgar José Escalona-Canal; Iratxe Alcalde-Díez; Carmen Gómez-Vildosola; Ainhoa Belzunegui-Gárate; Fabiola Espinoza-Cuba; José Antonio López-Cejuela; Alba García-García; Alejandro Torrejón-Cereceda; Elena Sabina Nisa-Martínez; Diana Moreira Nieto; Cintia Hellín-Mercadal; Ander García-Caballero; Héctor Alonso-Valle Journal: J Pers Med Date: 2022-03-23