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Background COVID-19 vaccines were efficacious and safe in clinical trials. We report nine events of acute pericarditis (AP) in eight patients following COVID-19 vaccination with BNT162b2 (6/9), AZD1222 (2/9) and mRNA-1273 (1/9). Methods All patients were referred for AP temporally linked with COVID-19 vaccination. Chest pain was the most common clinical manifestation. Alternative etiologies were excluded upon thorough diagnostic work up. AP diagnosis was established according to ESC guidelines. Findings Five events occurred after the first vaccine dose and four after the second. The mean age in this cohort was 65.8±10.2 years and the men/women ratio 3/5. All events resolved without sequelae; two events were complicated by cardiac tamponade requiring emergent pericardial decompression. Hospitalization was required in four cases. Interpretation Although causality cannot be firmly established, AP has emerged as a possible complication following COVID-19 vaccination. Further investigation is indispensable to fully characterize this new entity.

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Background Acute pericarditis has a wide spectrum of clinical presentations largely depending on underlying aetiologies. We assessed the role of age and sex in the clinical features and outcome of acute pericarditis. Materials and methods A total of 240 consecutive patients hospitalized with a first episode of acute pericarditis were included. At baseline demographics, clinical features, laboratory and imaging findings and medical therapy were recorded. Patients were followed up for at least 18 months for complications. Data comparisons were performed according to sex and age (≤60 or >60 years). Results The male/female ratio was 1.42, and 56% of patients were >60 years. Younger patients depicted more often chest pain (P = .001), fever and rubs (P < .001 for both), ST elevation and PR depression (P = .032 and .009, respectively), higher CRP values (P = .009) and less often dyspnoea (P = .046) and pericardial effusion (P = .036). Moreover, they received less often glucocorticoids (P < .001) and depicted less atrial fibrillation (P = .003) and a higher rate of recurrent pericarditis (P = .013). After multivariate adjustment for confounders, age >60 years remained an independent predictor for a lower risk of recurrent pericarditis (hazard ratio 0.60, 95% CI: 0.39‐0.96, P = .033). Regarding sex, females were older (P = .007), showed less often ST elevation and PR depression (P < .001 and .002, respectively) and had a higher baseline heart rate (P = .02). Sex was not associated with recurrent pericarditis risk. Conclusions Patients with acute pericarditis have distinct presenting clinical, biochemical and prognostic features according to age and sex. Awareness of such differences is important for clinical decision‐making.

Colchicine has been established as a first line medication in the treatment of acute (first episode) and recurrent pericarditis on top of the conventional treatment as well as for the prevention of postpericardiotomy syndrome. It depicts a good safety profile with gastrointestinal intolerance being the most common side effect.

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Despite the remarkable development of the medical industry in the current era, herbal products with therapeutic potentials arise as attractive alternative treatments. Consequently, Chios mastiha, a natural, aromatic resin obtained from the trunk and brunches of the mastic tree, has recently gained increasing scientific interest due to its multiple beneficial actions. Chios mastiha is being exclusively produced on the southern part of Chios, a Greek island situated in the northern Aegean Sea, and its therapeutic properties have been known since Greek antiquity. There is now substantial evidence to suggest that mastiha demonstrates a plethora of favorable effects, mainly attributed to the anti-inflammatory and anti-oxidative properties of its components. The main use of mastiha nowadays, however, is for the production of natural chewing gum, although an approval by the European Medicines Agency for mild dyspeptic disorders and for inflammations of the skin has been given. The aim of this article is to summarize the most important data about the therapeutic actions of Chios mastiha and discuss future fields for its medical application.

Treatment failure with A/NSAIDs in acute pericarditis can be anticipated by certain patient characteristics. STCT identifies patients who are at the highest risk for recurrences, a risk that is approximately threefold higher than that of A/NSAIDs and 1.5-fold higher than that of corticosteroids as first-line treatment.