A haematoma is an accumulation of blood in the tissues outside the vessels.
Arterial puncture is a puncture of the brachial artery or of one of its branches by the needle used for bleeding of the donor.
Delayed bleeding is spontaneous recommencement of bleeding from the venepuncture site, which occurs after the donor has left the donation site.
Irritation of a nerve by pressure from a haematoma.
Injury of a nerve by the needle at insertion or withdrawal.
Injury of a tendon by the needle.
Cases characterised mainly by severe local and radiating pain in the arm used for the donation and arising during or within hours following donation, but without further details to permit classification in one of the already more specific categories mentioned above.
Inflammation in a vein associated with a thrombus.
Allergic type skin reaction at the venepuncture site caused by allergens in solutions used for disinfection of the arm or allergens from the needle.
A vasovagal reaction is a general feeling of discomfort and weakness with anxiety, dizziness and nausea, which may progress to loss of consciousness (faint).
Symptoms occurred before donor has left the donation site.
Injury caused by falls or accidents in donors with a vasovagal reaction and unconsciousness before donor has left the donation site.
Symptoms occurred after donor has left the donation site.
Injury caused by falls or accidents in donors with a vasovagal reaction and unconsciousness after donor has left the donation site.