Patient with bleeding tendency:
A previous diagnosis of a bleeding tendency
Bleeding more than 36h or restarting more than 36h afteroperation (however, this could indicate an infection)
Admission to hospital to arrest bleeding
Blood transfussion for bleeding
Spontaneous bleeding (e.g: haemarthrosis, deep bruising ormenorrhagia from little obvious cause)
Convincing family history of one of the above, combined with adegree of personal history
Treatment with significant drugs such as anticoagulants