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[Inflammatory state in patients with atrial fibrillation before and after electrical cardioversion]
E Gómez Martínez1, S Borrás Pallé, F Valls Grima
1Unidad Coronaria, Servicio de Medicina Intensiva, Hospital Universitario Dr. Peset, Valencia, España. gomez_eva@gva.es
Insights
Patients with atrial fibrillation show increased inflammation. While certain inflammatory markers were higher in those not successfully cardioverted, only high-sensitivity C-reactive protein (hs-CRP) showed a trend towards predicting recurrence.
Area of Science:
- Cardiology
- Inflammation Research
- Biomarker Discovery
Context:
- Persistent atrial fibrillation is associated with an elevated inflammatory state.
- Understanding inflammatory markers may predict cardioversion success and recurrence.
- Assessing biomarkers like hs-CRP, IL-6, and TNF-alpha is crucial.
Purpose:
- To evaluate the inflammatory status in patients with persistent atrial fibrillation.
- To determine the predictive value of inflammatory markers for cardioversion success.
- To assess the association of inflammation with atrial fibrillation recurrence at 30 days.
Summary:
- A prospective study found elevated inflammatory markers (hs-CRP, IL-1β, IL-6, TNF-α) in atrial fibrillation patients compared to controls.
- Tumor Necrosis Factor-alpha and Interleukin-6 were higher in non-cardiovertors, but only enlarged atria predicted cardioversion failure.
- High-sensitivity C-reactive protein (hs-CRP) in the highest quartile trended towards predicting AF recurrence at 30 days.
Impact:
- This research highlights the role of inflammation in atrial fibrillation pathophysiology.
- Findings suggest potential utility for hs-CRP in risk-stratifying patients for AF recurrence.
- Further investigation into inflammatory biomarkers could refine treatment strategies for atrial fibrillation.
Objective:
To assess the inflammatory state in patients with persistent atrial fibrillation and to determine the predictive value in the success of cardioversion and recurrence at 30 days.
Design:
Prospective observational case-control study.
Patients:
We included consecutively 49 patients with atrial fibrillation previously to scheduled electrical cardioversion in Coronary Care Unit. Clinical and echocardiographic variables were registered and High-sensivity C-reactive protein, interleukin-1beta, interleukin-6 and Tumour Necrosis Factor-alpha were measured. At 30-days follow-up, rhythm and biomarkers were reassessed. As control groups, we recruited 27 healthy volunteers and 16 patients matched for age, gender and cardiovascular risk factors.
Results:
Median age was 66 +/- 10 years and 38% were women. All the markers were higher in patients than in both control groups (p < 0.05). FNT-alpha and Interleukin-6 levels were higher in non-cardiovertors but only an enlarged atria was related to unsuccessful cardioversion (p = 0.036). High-sensivity C-reactive protein values in the higher cuartile tended to be related to recurrence of persistent atrial fibrillation (p = 0.06).
Conclusions:
There is an increased inflammatory state in patients with atrial fibrillation. FNT-alpha and Interleukin-6 levels were increased in non-cardiovertors, but no biomarker was associated with success of cardioversion or rhythm state at 30-days. However, higher levels of hs-CRP showed a trend to be related to recurrence of atrial fibrillation.
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