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Nearly half of CABG patients developed new-onset atrial fibrillation (AF) within one year, but the arrhythmia burden declined to nearly zero after 30 days.
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Ninety-five percent of AF episodes occurred within the first postoperative month, with limited late recurrences.
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No strokes occurred among patients with AF, and adverse cardiac event rates were similar between those with and without AF.
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Most postoperative AF episodes were asymptomatic and missed by conventional monitoring methods.
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Findings question the need for long-term anticoagulation in patients with transient, low-burden AF following CABG.
Source: JAMA
