Key result
Older age is linked to ~4% higher in-hospital mortality in infective endocarditis.
Why the study?
Infective endocarditis is a significant disease with high mortality and complications, but recent data on its incidence and in-hospital mortality over the last decade in specific populations are limited.
Observational (n=407)
No
Rising infective endocarditis incidence with age predicting mortality warrants vigilance in older adults; leaves open whether targeted prevention improves outcomes.
BACKGROUND: Infective endocarditis (IE) is a significant disease characterized by high mortality and complications. The aim of this study was to evaluate the incidence/100 000 inhabitants and the in-hospital mortality/100 000 inhabitants of IE during the last 10 years in the province of Ravenna. METHODS AND RESULTS: We reviewed the public hospitals discharge database from January 2010 to December 2020 using the international classification of disease codification (ICD-9) for IE. We used the Italian national statistical institute (ISTAT) archive to estimate the number of Ravenna inhabitants/year. In 10 years, we identified a total of 407 patients with diagnosis of IE.The incidence of IE increased significantly from 6.29 cases/100 000 inhabitants in 2010 to 19.58 cases/100 000 inhabitants in 2020 ( P < 0.001). Also, the in-hospital mortality from IE increased over the same number of years, from 1.8 deaths/100 000 inhabitants in 2010 to 4.4 deaths/100 000 inhabitants in 2020 ( P < 0.001). The mortality rate (%) of IE over the years did not increase ( P = 0.565). Also, over the years there was no difference in the site of infection ( P = 0.372), irrespective of the valve localization or type, native valve ( P = 0.347) or prosthetic valve ( P = 0.145). On logistic regression analysis, age was the only predictor of in-hospital mortality (odds ratio 1.045, 95% confidence interval: 1.015; 1.075, P = 0.003). CONCLUSIONS: Ravenna-based data on IE showed increased disease incidence but unchanged mortality rate over 10 years of follow-up. Age remains the sole predictor of population-based mortality, irrespective of the nature of the valve, native or substitute, and the organism detected on microbiology.
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Lisi et al. (2022) conducted an observational in Infective endocarditis (n=407). Age was evaluated on In-hospital mortality (OR 1.045, 95% CI 1.015-1.075, p=0.003). Over 10 years, infective endocarditis incidence increased from 6.29 to 19.58 per 100,000, and age was the sole predictor of in-hospital mortality (OR 1.045; 95% CI 1.015-1.075; P=0.003).
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