['Hemorrhage from the left ventricle can be critical and sutureless repair using a fibrin-based haemostat (TachoComb) is one effective option. When active hemorrhage is not controlled by the haemostat, we have used a polyglycolic acid (PGA) sheet and fibrin glue in addition. Here we investigated whether the PGA sheet and fibrin glue combined with TachoComb had stronger adhesive properties than TachoComb alone in two experimental models.', 'Experiment 1. An airtight circuit that included rabbit skin with holes covered by each type of sealant was gradually pressurized and the burst pressure was recorded automatically (n =\u200910). Experiment 2. A suture loop was attached to a porcine heart by each sealant, and the peel-off pressure was measured (n =\u200912).', 'The PGA sheet and fibrin glue combined with TachoComb showed significantly higher adhesive strength than TachoComb alone in both experiments (p <\u20090.05).'] Does polyglycolic acid sheet with fibrin glue potentiate the effect of a fibrin-based haemostat in cardiac surgery?