Infective endocarditis in children and adolescents: a different profile with clinical implications.

BACKGROUND: Our aim was to compare pediatric infective endocarditis (IE) with the clinical profile and outcomes of IE in adults. METHODS: Prospective multicenter registry in 31 Spanish hospitals including all patients with a diagnosis of IE from 2008 to 2020. RESULTS: A total of 5590 patients were included, 49 were <18 years (0.1%). Congenital heart disease (CHD) was present in 31 children and adolescents (63.2%). Right-sided location was more common in children/adolescents than in adults (46.9% vs. 6.3%, P < 0.001). Pediatric pulmonary IE was more frequent in patients with CHD (48.4%) than in those without (5.6%), P = 0.004. Staphylococcus aureus etiology tended to be more common in pediatric patients (32.7%) than in adults (22.3%), P = 0.082. Heart failure was less common in pediatric patients than in adults, due to the lower rate of heart failure in children/adolescents with CHD (9.6%) with respect to those without CHD (44.4%), P = 0.005. Inhospital mortality was high in both children, and adolescents and adults (16.3% vs. 25.9%; P = 0.126). CONCLUSIONS: Most IE cases in children and adolescents are seen in patients with CHD that have a more common right-sided location and a lower prevalence of heart failure than patients without CHD. IE in children and adolescents without CHD has a more similar profile to IE in adults. IMPACT: Infective endocarditis (IE) in children and adolescents is often seen in patients with congenital heart disease (CHD). Right-sided location is the most common in patients with CHD and heart failure is less common as a complication compared with patients without CHD. Infective endocarditis (IE) in children/adolescents without CHD has a more similar profile to IE in adults. In children/adolescents without CHD, locations were similar to adults, including a predominance of left-sided IE. Acute heart failure was the most frequent complication, seen mainly in adults, and in children/adolescents without CHD.

Mural Endocarditis: The GAMES Registry Series and Review of the Literature.

INTRODUCTION: Mural infective endocarditis (MIE) is a rare type of endovascular infection. We present a comprehensive series of patients with mural endocarditis. METHODS: Patients with infectious endocarditis (IE) from 35 Spanish hospitals were prospectively included in the GAMES registry between 2008 and 2017. MIEs were compared to non-MIEs. We also performed a literature search for cases of MIE published between 1979 and 2019 and compared them to the GAMEs series. RESULTS: Twenty-seven MIEs out of 3676 IEs were included. When compared to valvular IE (VIE) or device-associated IE (DIE), patients with MIE were younger (median age 59 years, p < 0.01). Transplantation (18.5% versus 1.6% VIE and 2% DIE, p < 0.01), hemodialysis (18.5% versus 4.3% VIE and 4.4% DIE, p = 0.006), catheter source (59.3% versus 9.7% VIE and 8.8% DIE, p < 0.01) and Candida etiology (22.2% versus 2% DIE and 1.2% VIE, p < 0.01) were more common in MIE, whereas the Charlson Index was lower (4 versus 5 in non-MIE, p = 0.006). Mortality was similar. MIE from the literature shared many characteristics with MIE from GAMES, although patients were younger (45 years vs. 56 years, p < 0.001), the Charlson Index was lower (1.3 vs. 4.3, p = 0.0001), catheter source was less common (13.9% vs. 59.3%) and there were more IVDUs (25% vs. 3.7%). S. aureus was the most frequent microorganism (50%, p = 0.035). Systemic complications were more common but mortality was similar. CONCLUSION: MIE is a rare entity. It is often a complication of catheter use, particularly in immunocompromised and hemodialysis patients. Fungal etiology is common. Mortality is similar to other IEs.