Short-term and one-year outcome of infective endocarditis in adult patients treated in a Finnish teaching hospital during 1980-2004

BMC Infect Dis. 2007 Jul 17;7:78. doi: 10.1186/1471-2334-7-78.

Abstract

Background: Previous studies on factors predicting the prognosis of infective endocarditis have given somewhat conflicting results. Our aim was to define the factors predicting the outcome of patients treated in a Finnish teaching hospital.

Methods: A total of 326 episodes of infective endocarditis in 303 patients treated during 1980-2004 were evaluated for short-term and 1-year outcome and complications.

Results: Infection of 2 native valves and the occurrence of neurological complications, peripheral emboli, or heart failure significantly predicted both in-hospital and 1-year mortality, while age > or =65 years or the presence of a major criterion or vegetation on echocardiography predicted death within 1 year. A significant trend was observed between the level of serum C-reactive protein (CRP) on admission and both the short-term and 1-year outcome. In the patients who had CRP values > or =100 mg/l on admission, the hazard ratio for in-hospital death was 2.9-fold and the hazard ratio for 1-year death was 3.9-fold as compared to those with lower CRP values. Male sex and age < 64 years significantly predicted a need for both in-hospital and 1-year surgery, as did the development of heart failure or the presence of a major criterion or vegetation on echocardiography. Peripheral emboli were associated with a need for in-hospital surgery, while Streptococcus pneumoniae as the causative agent or infection of 2 native valves predicted a need for surgery within 1 year from admission.

Conclusion: Some of the factors (e.g. heart failure, neurological complications, peripheral emboli) predicting a poor prognosis and/or need for surgery were the same observed in previous studies. A new finding was that high CRP values (> or =100 mg/l) on admission significantly predicted both short-term and 1-year mortality.

MeSH terms

  • Adolescent
  • Adult
  • Age Factors
  • Aged
  • Aged, 80 and over
  • Embolism / complications
  • Embolism / microbiology
  • Endocarditis, Bacterial / complications
  • Endocarditis, Bacterial / microbiology
  • Endocarditis, Bacterial / mortality*
  • Female
  • Finland
  • Heart Valve Diseases / complications
  • Heart Valve Diseases / microbiology
  • Heart Valve Diseases / mortality*
  • Heart Valve Diseases / surgery
  • Hospitals, Teaching
  • Humans
  • Male
  • Middle Aged
  • Nervous System Diseases / complications
  • Nervous System Diseases / microbiology
  • Prognosis
  • Sex Factors
  • Survival Rate