Objective: To define the pattern of cardiac involvement in eosinophilic granulomatosis and polyangiitis (EGPA) and propose an algorithm for heart disease screening.
Methods: This was a retrospective study of EGPA patients attending a specialized vasculitis clinic (1989-2016). Clinical characteristics and cardiovascular evaluation (CE) results (serum troponin, ECG, echocardiography and cardiac magnetic resonance) were collected and compared according to symptoms and inflammatory cardiac disease (ICD).
Results: A total of 131 EGPA patients were included, of whom 96 (73%) had undergone CE. The median (interquartile range) age was 50 (38-58) years and 36% showed ANCA+. Asthma preceded diagnosis by a median of 97 (36-240) months. Among the 96 patients who underwent CE, 43% were symptomatic, with dyspnea (47%) and chest pain (29%) being the predominant symptoms. In asymptomatic patients, CE reported abnormalities in 45% of cases, with a subsequent earlier diagnosis (4 vs 11 months). Overall, 27 patients had EGPA-related ICD (EGPA-rICD) that was already present at diagnosis in 20 cases, preceded it in 2 cases and developed later in 5 cases. EGPA-rICD patients were younger (46 vs 50 years; P = 0.04), had more frequently abnormal ECG (30.8 vs 2.1%; P < 0.001), negative ANCA (85 vs 69%; NS), higher BVAS score (3 vs 1; P = 0.005), higher eosinophil count (5.60 vs 1.60 × 109/l; P = 0.029) and higher CRP (52 vs 15 mg/l; P = 0.017). Overall, 11% of cases with EGPA-rICD were asymptomatic.
Conclusion: In our study, 45% of asymptomatic patients had an abnormal baseline cardiac evaluation, which allowed an earlier diagnosis of cardiac disease. We recommend prompt cardiac screening in all EGPA patients, instead of a symptoms-guided algorithm.
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