Aspirin Therapy in Pericarditis

Introduction to Aspirin Therapy

The American College of Cardiology recommends aspirin as a first-line anti-inflammatory therapy for pericarditis at high doses (500-1,000 mg every 6-8 hours), not for its antiplatelet effects, and should be combined with colchicine to reduce recurrence risk 1, 2

High-dose aspirin (750-1,000 mg every 8 hours or 500-1,000 mg every 6-8 hours) functions as an anti-inflammatory agent through COX inhibition, not as an antiplatelet drug, as per the European Heart Journal 1, 3, 4
The anti-inflammatory dose is substantially higher than the antiplatelet dose (81-325 mg daily used for cardiovascular protection), according to the American College of Cardiology 1

The European Heart Journal recommends aspirin PLUS colchicine as the initial regimen for pericarditis treatment 3, 4
Aspirin should be given at 750-1,000 mg every 8 hours with gastroprotection, as suggested by the European Heart Journal and the American College of Cardiology 4, 5
Colchicine should be given at 0.5 mg twice daily (≥70 kg) or 0.5 mg once daily (<70 kg) for 3 months, as recommended by the American College of Cardiology and the European Heart Journal 1, 3

The American College of Cardiology recommends aspirin as the preferred NSAID in post-MI pericarditis because other NSAIDs may impair myocardial healing and increase rupture risk 1, 2
Acetaminophen can be used for symptomatic relief in early post-MI pericarditis (1-3 days post-infarction), according to the American College of Cardiology 1
Glucocorticoids and non-aspirin NSAIDs are potentially harmful post-MI due to increased risk of recurrent MI, impaired healing, and ventricular rupture, as stated by the American College of Cardiology 1, 2
Aspirin is NOT recommended in children due to risk of Reye's syndrome and hepatotoxicity, as per the European Heart Journal 8

CRP should guide treatment duration and assess therapeutic response, according to the European Heart Journal and the American College of Cardiology 3, 4
Tapering should only begin when symptoms are absent and CRP is normalized, as suggested by the European Heart Journal and the American College of Cardiology 4

Low-dose corticosteroids (prednisone 0.2-0.5 mg/kg/day) should only be used when NSAIDs/colchicine fail or are contraindicated, as recommended by the European Heart Journal and the American College of Cardiology 4, 5
Corticosteroids increase risk of chronicity and recurrence, so they should NOT be first-line, according to the European Heart Journal and the American College of Cardiology 3, 4

Do not use low-dose "antiplatelet" aspirin (81-325 mg) for pericarditis—this dose is ineffective for inflammation, as stated by the American College of Cardiology 1
Do not start corticosteroids as first-line therapy; they provide rapid symptom control but significantly increase recurrence risk, according to the European Heart Journal and the American College of Cardiology 3, 4, 5
Do not use non-aspirin NSAIDs in post-MI pericarditis due to risk of impaired healing and rupture, as recommended by the American College of Cardiology 1, 2
Always add colchicine to aspirin—colchicine reduces recurrence from 30% to 15%, as suggested by the European Heart Journal 3