Background
Little is known about the characteristics and impact of septic shock (SS) on the outcomes of infective endocarditis (IE). We aimed to investigate the characteristics and outcomes of patients with IE presenting with SS and to compare them to those of IE patients with sepsis (Se) and those with neither Se nor SS (no-Se-SS).
Methods
Prospective cohort study of 4,864 IE patients from 35 Spanish centers (2008 to 2018). Logistic regression analyses were performed to identify risk factors for SS and mortality.
Results
SS and Se presented respectively in 597 (12.3%) and 559 (11.5%) patients. Patients with SS were younger and presented significantly higher rates of diabetes, chronic renal and liver disease, transplantation, nosocomial acquisition, S.aureus, IE complications, and in-hospital mortality (62.5%, 37.7% for Se and 18.2% for no-Se-SS,p<.001). S.aureus (OR 1.94, 95%CI 1.34-2.81,p<.001), Gram negative (OR 2.21,95%CI 1.25-3.91,p.006), nosocomial acquisition (OR 1.44,95%CI 1.07-1.94,p.015), persistent bacteremia (OR 1.82, 95%CI 1.24-2.68,p.002), acute renal failure (OR 3.02,95% 2.28-4.01,p<.001), CNS emboli (OR 1.48,1.08-2.01,p.013), and larger vegetation size (OR 1.01,95%CI 1.00-1.02,p.020) were associated with a higher risk of developing SS. Charlson score, heart failure, persistent bacteremia, acute renal failure, mechanical ventilation, worsening of liver disease, S.aureus and receiving aminoglycosides within the first 24h were associated with higher in-hospital mortality, whereas male sex, native valve IE and cardiac surgery were associated with lower mortality.
Conclusions
SS is frequent and entails dismal prognosis. Early identification of patients at risk of developing SS and early assessment for cardiac surgery appear as key factors to improve outcomes.