International Heart Valve Bank Survey: A Review of Processing Practices and Activity Outcomes

Table 11

Reasons for product failure and why released products were not implanted.

Reasons for product failure	Number of HVBs	Reasons why released products were not implanted	Number of HVBs
During evaluation of tissue and processing		Uncontrollable factors
Abnormal morphology	10	Size demands for valves	11
Failure in valve competency	3	Aortic valve/nonvalve products not in demand	10
Technical issues	3	Beyond maximum storage duration	5
Deferred due to size/type of graft	1	Decision during surgery	4
After tissue processing		Factors that can be improved on
Positive microbiological results of graft	21	Damage of graft during thawing	1
Positive serology results of donor	5	Intraoperative contamination of graft	1
Quality/donor related	3	Incorrect size of graft	1
		Quality of graft	1