AIMS: The aim of this study was to evaluate the effect of valve surgery (VS) in infective endocarditis (IE) on 5-year mortality and to evaluate whether conflicting results reported by previous studies could be due to differences in their methodological approaches. METHODS AND RESULTS: Four hundred and forty-nine patients with a definite left-sided IE were selected from a prospective, population-based study. Association between VS and 5-year mortality was examined with a Cox model. To determine the impact of different methodological approaches, we also analysed the relationship between VS and mortality in our database, according to each method used in the five previous studies. Valve surgery was performed in 240 patients (53%). It was associated with an increase in short-term mortality [within the first 14 post-operative days; adjusted hazard ratio (HR), 3.69; 95% confidence interval (CI), 2.17-6.25; P<0.0001] and a decrease in long-term mortality (adjusted HR, 0.55; 95% CI, 0.35-0.87; P=0.01). At least 188 days of follow-up were required for VS to provide an overall survival advantage. When applying each study's method to our database, we obtained results similar to those reported. CONCLUSION: Previous conflicting results appear to be related to differences in statistical methods. When using appropriate models, we found that VS was significantly associated with reduced long-term mortality.
AIMS: The aim of this study was to evaluate the effect of valve surgery (VS) in infective endocarditis (IE) on 5-year mortality and to evaluate whether conflicting results reported by previous studies could be due to differences in their methodological approaches. METHODS AND RESULTS: Four hundred and forty-nine patients with a definite left-sided IE were selected from a prospective, population-based study. Association between VS and 5-year mortality was examined with a Cox model. To determine the impact of different methodological approaches, we also analysed the relationship between VS and mortality in our database, according to each method used in the five previous studies. Valve surgery was performed in 240 patients (53%). It was associated with an increase in short-term mortality [within the first 14 post-operative days; adjusted hazard ratio (HR), 3.69; 95% confidence interval (CI), 2.17-6.25; P<0.0001] and a decrease in long-term mortality (adjusted HR, 0.55; 95% CI, 0.35-0.87; P=0.01). At least 188 days of follow-up were required for VS to provide an overall survival advantage. When applying each study's method to our database, we obtained results similar to those reported. CONCLUSION: Previous conflicting results appear to be related to differences in statistical methods. When using appropriate models, we found that VS was significantly associated with reduced long-term mortality.
Authors: Elisabeth Fernandes; Claude Olive; Jocelyn Inamo; François Roques; André Cabié; Patrick Hochedez Journal: Am J Trop Med Hyg Date: 2017-07 Impact factor: 2.345
Authors: Catherine Chirouze; François Alla; Vance G Fowler; Daniel J Sexton; G Ralph Corey; Vivian H Chu; Andrew Wang; Marie-Line Erpelding; Emanuele Durante-Mangoni; Nuria Fernández-Hidalgo; Efthymia Giannitsioti; Margaret M Hannan; Tatjana Lejko-Zupanc; José M Miró; Patricia Muñoz; David R Murdoch; Pierre Tattevin; Christophe Tribouilloy; Bruno Hoen Journal: Clin Infect Dis Date: 2014-11-10 Impact factor: 9.079