Community-Acquired Pneumonia in Centenarian Elderly Individuals

<bold>INTRODUCTION:</bold> Hospitalizations of adults aged 100 years or older for pneumonia are a new reality that hás not been adequately studied and understood. It is necessary to better understand and caracterize this reality in order to intervene more effectively. <bold>AIMS AND OBJECTIVES:</bold> To characterize the evolution of hospitalizations for community-acquired pneumonia (CAP) in adults aged 100 years or older from 2010 to 2019 in mainland Portugal. <bold>Methods:</bold> Retrospective analysis of hospitalizations of adults aged 100 years or older admitted with the primary diagnosis of CAP in mainland Portugal from 2010 to 2019. Coded information from the hospital admission databases of the Central Administration of the Health System, I.P./Ministry of Health was used. <bold>Results:</bold> From 2010 to 2019, a total of 1,766 adults aged 100 years or older were admitted, which corresponds to 0.38% of the total of 462,910 hospitalizations of individuals aged 18 years or older with a primary diagnosis of CAP. The mean age was 101 years, with a maximum age of 111 years, and 74.5% were women. The in-hospital mortality rate was 44.5%. From 2010 to 2014, the percentage of hospitalizations for centenarian CAP was 0.36%, and from 2015 to 2019, it was 0.40%, representing a 10% increase. <bold>Conclusions:</bold> Community-acquired pneumonia in centenarian elderly individuals is a new reality in adult hospitalizations and has increased throughout the decade from 2010 to 2019 with an in-hospital mortality rate below 50%.