• Massimo Imazio, Antonio Brucato, Roberto Cemin, Stefania Ferrua, Stefano Maggiolini, Federico Beqaraj, Daniela Demarie, Davide Forno, Silvia Ferro, Silvia Maestroni, Riccardo Belli, Rita Trinchero, David H Spodick, Yehuda Adler, and ICAP Investigators.
• Cardiology Department, Maria Vittoria Hospital, Turin, Italy. massimo_imazio@yahoo.it
• N. Engl. J. Med.. 2013 Oct 17;369(16):1522-8.

BackgroundColchicine is effective for the treatment of recurrent pericarditis. However, conclusive data are lacking regarding the use of colchicine during a first attack of acute pericarditis and in the prevention of recurrent symptoms.MethodsIn a multicenter, double-blind trial, eligible adults with acute pericarditis were randomly assigned to receive either colchicine (at a dose of 0.5 mg twice daily for 3 months for patients weighing >70 kg or 0.5 mg once daily for patients weighing ≤70 kg) or placebo in addition to conventional antiinflammatory therapy with aspirin or ibuprofen. The primary study outcome was incessant or recurrent pericarditis.ResultsA total of 240 patients were enrolled, and 120 were randomly assigned to each of the two study groups. The primary outcome occurred in 20 patients (16.7%) in the colchicine group and 45 patients (37.5%) in the placebo group (relative risk reduction in the colchicine group, 0.56; 95% confidence interval, 0.30 to 0.72; number needed to treat, 4; P<0.001). Colchicine reduced the rate of symptom persistence at 72 hours (19.2% vs. 40.0%, P=0.001), the number of recurrences per patient (0.21 vs. 0.52, P=0.001), and the hospitalization rate (5.0% vs. 14.2%, P=0.02). Colchicine also improved the remission rate at 1 week (85.0% vs. 58.3%, P<0.001). Overall adverse effects and rates of study-drug discontinuation were similar in the two study groups. No serious adverse events were observed.ConclusionsIn patients with acute pericarditis, colchicine, when added to conventional antiinflammatory therapy, significantly reduced the rate of incessant or recurrent pericarditis. (Funded by former Azienda Sanitaria Locale 3 of Turin [now Azienda Sanitaria Locale 2] and Acarpia; ICAP ClinicalTrials.gov number, NCT00128453.).

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