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Published on: January 28, 2020
Prognostic value of pro-adrenomedullin and copeptin in acute infective endocarditis
Rosa Zampino1,2, Domenico Iossa3, Maria Paola Ursi1
1Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.
Insights
Prognostic biomarkers pro-adrenomedullin and copeptin may predict worse outcomes in infective endocarditis (IE). Procalcitonin (PCT) indicates Staphylococcus aureus infection, while C-reactive protein (CRP) signals embolic risk.
Area of Science:
- Cardiology
- Infectious Diseases
- Biomarker Research
Background:
- Infective endocarditis (IE) poses a significant mortality risk, with prognosis challenging to predict using clinical data alone.
- Biomarkers have demonstrated utility in managing various cardiac conditions.
- This study investigated the prognostic value of procalcitonin (PCT), pro-adrenomedullin (pro-ADM), and copeptin in IE.
Purpose of the Study:
- To evaluate the prognostic significance of PCT, pro-ADM, and copeptin in patients with IE.
- To explore the relationship between these biomarkers, disease characteristics, and the established biomarker C-reactive protein (CRP).
Main Methods:
- A retrospective analysis of 196 patients diagnosed with definite IE.
- Collection and analysis of clinical, laboratory, and echocardiography data, including comorbidities.
- Measurement of PCT, pro-ADM, and copeptin from plasma samples collected upon admission during the acute disease phase.
Main Results:
- Pro-ADM and copeptin levels were elevated in older patients and those with chronic kidney disease.
- Pro-ADM independently predicted hospital mortality (OR 3.29), and copeptin independently predicted 1-year mortality (OR 2.55).
- High PCT levels correlated strongly with Staphylococcus aureus infection (p=0.001), and CRP was associated with embolic events (p=0.003).
Conclusions:
- Distinct biomarkers are associated with specific outcomes in IE.
- Pro-ADM and copeptin may indicate a poorer prognosis upon hospital admission, identifying patients needing intensive management.
- CRP serves as a cost-effective marker for embolic risk, while high PCT suggests Staphylococcus aureus etiology.
Background:
Infective endocarditis (IE) is a life-threatening disease whose prognosis is often difficult to predict based on clinical data. Biomarkers have been shown to favorably affect disease management in a number of cardiac disorders. Aims of this retrospective study were to assess the prognostic role of procalcitonin (PCT), pro-adrenomedullin (pro-ADM) and copeptin in IE and their relation with disease characteristics and the traditional biomarker C-reactive protein (CRP).
Methods:
We studied 196 patients with definite IE. Clinical, laboratory and echocardiography parameters were analyzed, with a focus on co-morbidities. PCT, pro-ADM and copeptin were measured on stored plasma samples obtained on admission during the acute phase of the disease.
Results:
Pro-ADM and copeptin were significantly higher in older patients and associated with prior chronic kidney disease. Pro-ADM was an independent predictor of hospital mortality (OR 3.29 [95%C.I. 1.04-11.5]; p = 0.042) whilst copeptin independently predicted 1-year mortality (OR 2.55 [95%C.I. 1.18-5.54]; p = 0.017). A high PCT value was strictly tied with S. aureus etiology (p = 0.001). CRP was the only biomarker associated with embolic events (p = 0.003).
Conclusions:
Different biomarkers correlate with distinct IE outcomes. Pro-ADM and copeptin may signal a worse prognosis of IE on admission to the hospital and could be used to identify patients who need more aggressive treatment. CRP remains a low-cost marker of embolic risk. A high PCT value should suggest S. aureus etiology.
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