title: Timing of tourniquet removal after knee replacement.
mesh_terms: D006470:Hemorrhage / Q000517:prevention & control; D006493:Heparin / Q000009:adverse effects / Q000627:therapeutic use; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D007720:Knee Prosthesis; D008875:Middle Aged; D013997:Time Factors; D014111:Tourniquets / Q000379:methods*
chemical_list: D006493:Heparin