BackgroundThe consequences of the ageing population concerning ICU hospitalisation need to be adequately described. We believe that this discussion should be disease specific. A focus on respiratory infections is of particular interest, because it is strongly associated with old age. Our objective was to assess trends in demographics over a decade among elderly patients admitted to the ICU for acute respiratory infections.MethodsA cross-sectional study was performed between 2006 and 2015 based on hospital discharge databases in one French region (2.5 million inhabitants). Patients with acute respiratory infection were selected according to the specific ICD-10 diagnosis codes recorded, including acute exacerbation of chronic obstructive pulmonary disease (AECOPD) and community-acquired pneumonia (CAP). We also identified comorbid conditions based on any significant ICD-10 secondary diagnoses adapted from the Charlson and Elixhauser indexes.ResultsA total of 98,381 hospital stays for acute respiratory infection were identified among the 3,856,785 stays over the 10-year period. The number of patients 75 y/o and younger increased 1.6-fold from 2006 to 2015, whereas the numbers of patients aged 85–89 and ≥ 90 y/o increased by 2.5- and 2.1-fold, respectively. Both CAP and AECOPD hospitalisations significantly increased for all age groups over the decade. ICU hospitalisations for respiratory infection increased 2.7-fold from 2006 to 2015 (p = 0.0002). The greatest increases in the use of ICU resources were for the 85–89 and ≥ 90 y/o groups, which corresponded to increases of 3.3- and 5.8-fold. Indeed, the proportion of patients hospitalized for respiratory infection in ICU that were elderly clearly grew during the decade: 11.3% were ≥ 85 y/o in 2006 versus 16.4% in 2015 (p < 0.0001). This increase in ICU hospitalisation rate of ageing patients was not associated with significant changes in the level of care or ICU mortality except for patients ≥ 90 y/o (for whom ICU mortality dropped from 40.9 to 22.3%, p = 0.03).ConclusionWe observed a substantial increase in acute respiratory infection diagnoses associated with hospitalisation between 2006 and 2015, with a growing demand for critical care services. Both the absolute number and the percentage of elderly patient ICU admissions increased over the last decade, with the greatest increases being observed for patients 85 years and older.Electronic supplementary materialThe online version of this article (10.1186/s13613-018-0430-6) contains supplementary material, which is available to authorized users.
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Background The consequences of the ageing population concerning ICU-hospitalization need to be adequately described, especially acute respiratory infections (ARI) strongly associated with Elderly. The study aimed to assess the long-term outcomes of ARI surviving ICU hospitalization in patients over 80 yo. Methods A retrospective multicentre cohort study was performed, based on hospital discharge databases in one French region (2.5 million inhabitants). Patients with ARI in ICU were selected according to specific ICD-10 diagnosis codes recorded and matched with a control population (patient undergoing a cataract surgery), using a propensity score (matching algorithm 1:1 ratio, caliper 0.002) with the matching variables (age, sex, frailty score, chronic heart disease, chronic pulmonary disease and cancer). Analyzes of this matched population were performed to determine their 2-year in-hospital mortality, healthcare utilization and evolution of the frailty score during the 2-year period before/after the inclusion stay. Results A total of 1,658 hospital stays for ARI after 80 yo were identified, with 438 dead (26%) during the initial stay. After matching with the cataract population, 988 patients were selected in each group without difference in the propensity score. ARI lead to an important increase of healthcare use during the 2 years after discharge. The patients that were discharged from hospital after ARI requiring ICU, had a 23-fold increase of death at 90 days and 4-fold at 2 years and the evolution of the frailty score was 1.6 fold higher than the cataract population. Conclusions Elderly patients with severe ARI survived from their ICU stay in 75%, but have a major risk of death in the following months, and an important increase in healthcare consumption. Our findings provide data for more informed goals-of-care discussions and may help target post-ICU discharge services for these high-risk groups. Key messages Elderly patients with severe acute respiratory infection survived ICU in 75%, but had a major risk of death in the following months, added to a substantial increase in healthcare consumption. These findings provide data for more informed goals-of-care discussions and may help target interventions for these high-risk groups.
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