Key result
Decellularized pulmonary homografts demonstrated higher freedom from explantation and degeneration at 10 years compared to bovine jugular vein conduits.
Why the study?
Decellularized pulmonary homografts have emerged as an alternative to bovine jugular vein conduits for pulmonary valve replacement in congenital heart disease, but comparative data were needed.
Does decellularized pulmonary homograft improve freedom from explantation and endocarditis compared to bovine jugular vein conduits in patients with congenital heart disease requiring pulmonary valve replacement?
Cohort (n=638)
Yes
Does decellularized pulmonary homograft improve freedom from explantation and endocarditis compared to bovine jugular vein conduits in patients with congenital heart disease requiring pulmonary valve replacement?
Decellularized pulmonary homografts demonstrate superior 10-year freedom from explantation, degeneration, and endocarditis compared to bovine jugular vein conduits for pulmonary valve replacement in congenital heart disease.
Answers are grounded in this paper and cite their sources.
Should not yet change PVR conduit choice; leaves open whether DPH superiority persists after size matching in prospective studies.
For decades, bovine jugular vein conduits (BJV) and classic cryopreserved homografts have been the two most widely used options for pulmonary valve replacement (PVR) in congenital heart disease. More recently, decellularized pulmonary homografts (DPH) have provided an alternative avenue for PVR. Matched comparison of patients who received DPH for PVR with patients who received bovine jugular vein conduits (BJV) considering patient age group, type of heart defect, and previous procedures. 319 DPH patients were matched to 319 BJV patients; the mean age of BJV patients was 15.3 (SD 9.5) years versus 19.1 (12.4) years in DPH patients (p = 0.001). The mean conduit diameter was 24.5 (3.5) mm for DPH and 20.3 (2.5) mm for BJV (p < 0.001). There was no difference in survival rates between the two groups after 10 years (97.0 vs. 98.1%, p = 0.45). The rate of freedom from endocarditis was significantly lower for BJV patients (87.1 vs. 96.5%, p = 0.006). Freedom from explantation was significantly lower for BJV at 10 years (81.7 vs. 95.5%, p = 0.001) as well as freedom from any significant degeneration at 10 years (39.6 vs. 65.4%, p < 0.001). 140 Patients, matched for age, heart defect type, prior procedures, and conduit sizes of 20-22 mm (± 2 mm), were compared separately; mean age BJV 8.7 (4.9) and DPH 9.5 (7.3) years (p = n.s.). DPH showed 20% higher freedom from explantation and degeneration in this subgroup (p = 0.232). Decellularized pulmonary homografts exhibit superior 10-year results to bovine jugular vein conduits in PVR.
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Bobylev et al. (2023) conducted a cohort in Congenital heart disease requiring pulmonary valve replacement (n=638). Decellularized pulmonary homografts vs. Bovine jugular vein conduits was evaluated on Freedom from explantation at 10 years (p=0.001). Decellularized pulmonary homografts demonstrated higher freedom from explantation and degeneration at 10 years compared to bovine jugular vein conduits.
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