Preoperative myocardial strain, mesenteric resistance, and aortopulmonary collateral flow are associated with pleural effusion duration after fontan completion. - Alsafi Z; Dangardt F; Frieberg P; De Lange C; Hanséus K; Synnergren M; Tran K; Odermarsky M; Carlsson M; Liuba P (Frontiers in pediatrics, 2026)