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Risk factors and outcome of Fontan-associated plastic bronchitis: a case-control study

Risk factors and outcome of Fontan-associated plastic bronchitis: a case-control study

Journal of the American Heart Association 3(2): E000865

The onset of plastic bronchitis (PB) can be debilitating in survivors of Fontan surgery. The rarity of this complication makes designing studies to understand risk factors for PB challenging. This 2-center case-control study aimed to describe patient outcomes and to assess the association of antecedent patient factors with PB development. Using center registries, PB patients (n=25) were matched 1:2 to non-PB Fontans (n=43) by date of Fontan surgery and center. The groups were compared for baseline characteristics. Association of patient characteristics with PB was assessed using logistic regression and of potential risk factors with onset of PB using time-to-event analyses. The median time from Fontan to PB diagnosis was 2.5 years. Overall, 12/25 PB patients died or underwent heart transplant; the median transplant-free survival was 8.3 years after diagnosis. Factors associated with developing PB included post-surgical chylothorax (44% PB versus 10% control; odds ratio [OR] 7.3; P=0.003), chest tube (CT) duration at stage 2 (P=0.04) and Fontan (P=0.004), and postoperative ascites (36% PB versus 12% control; OR 4.2; P=0.003). CT drainage >13 days at Fontan was associated with earlier PB onset (P=0.04). Early-onset PB was associated with an increased risk of death (OR 5.0; P=0.002). PB is a life-threatening disorder. A longer duration of CT drainage after surgery, chylothorax, and development of ascites are all associated with developing PB. Understanding the pathophysiology of peri-operative complications in individual patients and using targeted interventions may delay the onset of the PB phenotype.

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Accession: 055579217

Download citation: RISBibTeXText

PMID: 24755155

DOI: 10.1161/JAHA.114.000865

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