Larry M Baddour1, Aylin Shafiyi2, Brian D Lahr3, Nandan S Anavekar4, James M Steckelberg2, Walter R Wilson2, M Rizwan Sohail5, Daniel C DeSimone5. 1. Division of Infectious Diseases, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN; Department of Cardiovascular Diseases, Mayo Clinic College of Medicine and Science, Rochester, MN. Electronic address: baddour.larry@mayo.edu. 2. Division of Infectious Diseases, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN. 3. Department of Biomedical Statistics and Informatics, Mayo Clinic College of Medicine and Science, Rochester, MN. 4. Department of Cardiovascular Diseases, Mayo Clinic College of Medicine and Science, Rochester, MN. 5. Division of Infectious Diseases, Department of Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN; Department of Cardiovascular Diseases, Mayo Clinic College of Medicine and Science, Rochester, MN.
Abstract
OBJECTIVE: To develop a contemporary profile of infective endocarditis (IE) among a population in 6 counties of Olmsted, Dodge, Mower, Steele, Waseca, and Freeborn in southern Minnesota between 2014 and 2018. PATIENTS AND METHODS: All possible and definite cases of IE (≥18 years) among residents of 6 counties in southern Minnesota, including Olmsted County, diagnosed between January 1, 2014, and December 31, 2018, were included in this retrospective, population-based investigation, using the Expanded Rochester Epidemiology Project (E-REP). RESULTS: Overall, 137 patients with IE developed incident IE in the 6-county region, corresponding to an age- and sex-adjusted incidence rate of 11.9 per 100,000 person-years. Men had a significantly higher incidence of IE (17.9 vs 6.8 per 100,000 person-years), and rates increased exponentially with age in both sexes. The median age of incident cases was 68.2 years, and 67.9% were male patients. The percentage of patients with histories of injection-drug use was low, at 6.7%. Bicuspid aortic valve was the most common (9.6%) native valve predisposing condition. Staphylococcus aureus was identified as the predominant pathogen in the overall group (34.8%), with viridans-group streptococci accounting for only 19.3% cases. Central nervous system and musculoskeletal complications were common. The 30-day readmission rate was 27.9%, and the 6-month mortality rate was 31.8%. CONCLUSION: To our knowledge, this is the first time that the population-based E-REP has been used to determine an age- and sex-adjusted IE incidence. Older male patients predominated, and S aureus was the most common pathogen. Based on these findings, it is not surprising that IE complications were frequently seen.
OBJECTIVE: To develop a contemporary profile of infective endocarditis (IE) among a population in 6 counties of Olmsted, Dodge, Mower, Steele, Waseca, and Freeborn in southern Minnesota between 2014 and 2018. PATIENTS AND METHODS: All possible and definite cases of IE (≥18 years) among residents of 6 counties in southern Minnesota, including Olmsted County, diagnosed between January 1, 2014, and December 31, 2018, were included in this retrospective, population-based investigation, using the Expanded Rochester Epidemiology Project (E-REP). RESULTS: Overall, 137 patients with IE developed incident IE in the 6-county region, corresponding to an age- and sex-adjusted incidence rate of 11.9 per 100,000 person-years. Men had a significantly higher incidence of IE (17.9 vs 6.8 per 100,000 person-years), and rates increased exponentially with age in both sexes. The median age of incident cases was 68.2 years, and 67.9% were male patients. The percentage of patients with histories of injection-drug use was low, at 6.7%. Bicuspid aortic valve was the most common (9.6%) native valve predisposing condition. Staphylococcus aureus was identified as the predominant pathogen in the overall group (34.8%), with viridans-group streptococci accounting for only 19.3% cases. Central nervous system and musculoskeletal complications were common. The 30-day readmission rate was 27.9%, and the 6-month mortality rate was 31.8%. CONCLUSION: To our knowledge, this is the first time that the population-based E-REP has been used to determine an age- and sex-adjusted IE incidence. Older male patients predominated, and S aureus was the most common pathogen. Based on these findings, it is not surprising that IE complications were frequently seen.
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