Research Article

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

Table 1

Summary of heart valve processing protocols used by HVBs in Europe.

Bank numberProcessing mediaAntibiotic regimenIncubation protocolCryopreservation methodStorage condition and duration

E1Until 2004: M199
2004 onwards: RPMI-1640
Vancomycin: 500 ug/mL
Gentamycin: 50 ug/mL
Piperacillin: 500 ug/mL
Nystatin: 2500 U/mL
Room temperature, 24 hours, in the darkControlled rate freezing Liquid nitrogen vapour phase: 5 years

E2RPMI-1640 with glutamine
Addition of 20% human albumin and DMSO for cryopreservation and storage
Cefoxitin: 240 ug/mL
Lincomycin: 120 ug/mL
Colimycin: 100 ug/mL
Vancomycin: 50 ug/mL
4°C, 24 hoursControlled rate freezing from +10°C to −110°CLiquid nitrogen vapour phase: 5 years

E3Transport solution: TRIS buffered isotonic saline
Antibiotics media: M199
Cryopreservation media: HBSS with 25 mM HEPES + 20% DMSO
Gentamicin: 4000 ug/mL
Imipenem: 200 ug/mL
Nystatin: 2500 U/mL
Polymyxin B: 200 ug/mL
Vancomycin: 50 ug/mL
2–8°C, 18–24 hoursControlled rate freezing (at −1°C/min)−135°C: 10 years

E4Cryopreservation media: HBSS with 25 mM HEPES + 10% DMSOVancomycin: 50 ug/mL
Gentamicin: 4000 ug/mL
Ciprofloxacin: 200 ug/mL
Amphotericin B: 50 ug/mL
Room temperature (21°C), 24 hoursControlled rate freezingLiquid nitrogen vapour phase: 10 years

E5Antibiotics media: RPMI-1640
Cryopreservation media: RPMI-1640 + 10% DMSO
Metronidazol: 50 ug/mL
Vancomycin: 50 ug/mL
Amikacin: 50 ug/mL
Amphotericin B: 5 ug/mL
4°C, 24 hoursControlled rate freezingLiquid nitrogen vapour phase: 15 years

E6Cryopreservation media: 70% TC-199 + 10% DMSO + 20% human albuminVancomycin: 50 ug/mL
Tobramycin: 50 ug/mL Cotrimoxazole: 50 ug/mL
4°C, 6–24 hours Controlled rate freezing (at −1°C/min)Liquid nitrogen vapour phase: 10 years

E7Cryopreservation media: M199 in the past, use sodium chloride solution + 10% DMSO at presentFluconazole: 200 mg
Cefotaxime: 1 g
4°C, 24 hoursLiquid nitrogen vapour phaseLiquid nitrogen vapour phase: 2 years

E8Antibiotic media: 0.9% sodium chloride
Cryopreservation media: RPMI-1640 + 10% cryoprotectant
Metronidazole: 20 ug/mL
Gentamicin: 20 ug/mL
Flucloxacillin: 20 ug/mL
4°C, at a minimum of 12 hours Controlled rate freezing (down to −180°C)Liquid nitrogen vapour phase: 5 years

E9M199 with Hanks' salts, L-glutamine, 25 mM HEPES Lincomycin,
polymyxin B sulphate,
vancomycin
4°C, 48 hoursNo response providedLiquid nitrogen vapour phase: 5 years

E10M199
Antibiotics media: 200 mL of Earles salt in M199
Amphotericin B: 250 ug/mL
Fungoral: 100 ug/mL
Colistin: 200 ug/mL
Vancocin: 500 ug/mL
Garamycin: 530 ug/mL
4°C–8°C, 24 hoursControlled rate freezingLiquid nitrogen vapour phase: 10 years

E11Transport solution: Ringer’s lactate or cardioplegia solution
Antibiotic media: M199
Cryopreservation media: M199 + Antibiotics + 12.5% DMSO
Cefuroxime: 250 ug/mL
Gentamicin: 80 ug/mL
Ciprofloxacin: 200 ug/mL
Vancomycin: 500 ug/mL
Colistin: 1000 IU/mL
Amphotericin B: 20 ug/mL
37°C, 18–24 hoursControlled rate freezing (from +4°C to −60°C at 1°C per min; then transfer to ultralow temperature freezer at −140°C)Ultralow temperature (−140°C): 5 years or −80°C: for up to 6 months