Timing of surgical treatment for active native value endocarditis

Area of Science:

• Cardiology
• Infectious Diseases
• Surgical Treatment

Background:

• Native valve endocarditis (NVE) is a serious infection requiring timely intervention.
• Optimal timing for surgical valve replacement in active NVE remains a critical clinical question.
• Staphylococcus aureus poses a significant threat in NVE, often associated with poorer prognoses.

Purpose of the Study:

• To determine the ideal timing for surgical intervention in active native valve endocarditis.
• To evaluate the impact of surgical timing on patient outcomes, particularly for Staphylococcus aureus infections.
• To identify factors influencing mortality and embolic events in surgically treated NVE patients.

Main Methods:

• Retrospective analysis of 33 patients undergoing aortic and/or mitral valve replacement for active NVE (1979-1994).
• Categorization of patients based on causative organism (Streptococcus, Staphylococcus aureus, Enterococcus) and time to surgery.
• Comparison of survival rates and embolic events between early (<2 weeks) and delayed (>2 weeks) surgical intervention groups.

Main Results:

• Surgical treatment within two weeks of fever onset for Staphylococcus aureus NVE resulted in survival for all 3 patients.
• Delayed surgery (>2 weeks) for Staphylococcus aureus NVE was associated with a higher mortality rate (4 out of 4 patients).
• Patients with Staphylococcus aureus NVE experienced embolic episodes earlier (within 2-3 weeks of fever) compared to other organisms.

Conclusions:

• Prompt surgical intervention, ideally within two weeks of pyrexia onset, is recommended for active native valve endocarditis caused by Staphylococcus aureus.
• Early surgical treatment is critical for improving survival in Staphylococcus aureus NVE.
• The findings underscore the urgency of surgical management for Staphylococcus aureus NVE to mitigate risks of mortality and embolism.