A 21 year-old male seen in the emergency room with a swollen, tender right knee. Patient is an electrician who had fallen to the ground an hour ago while working on a power line.
Patient
had a history of easy bruising that occasionally occurred with minor
injuries. He also had a history of
prolonged bleeding after dental extractions. The patient had not previously
been hospitalized or received blood transfusions.
There
was no family history of bleeding problems.
The
patient was taking no medication at the time of the accident.
Physical
examination showed a swollen, tender right knee.
PT=
10 sec (Normal 8-11.5)
aPTT=
57 sec (Normal 24-37.5)
Plt=
450,000 /μL (Normal 150,000-350,000)