AI-measured pericardial effusion volume on pre-TAVI CT not tied to long-term mortality

AI-measured pericardial effusion volume on pre-TAVI CT had no independent association with long-term mortality (HR 1.00, 95% CI 0.996–1.01; p=0.842). Effusion was common (58.7%) but larger ones rare (5.1%), and linked to atrial fibrillation and pulmonary hypertension.

• In 470 TAVI patients, AI-quantified pericardial effusion volume was detectable in 58.7%, but larger effusions (≥30 mL) were rare (5.1%).
• Higher effusion volume was associated with atrial fibrillation, higher systolic pulmonary artery pressure, and impaired right ventricular-pulmonary arterial coupling, but not with left ventricular ejection fraction or transvalvular gradients.
• No significant association with long-term mortality (log-rank p=0.46; HR for continuous volume 1.00, 95% CI 0.996–1.01, p=0.842).

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