Four patients required surgery to control bleeding from an iliac arter
y laceration. All patients had an 8 Fr or larger-femoral artery sheath
left within the iliac artery system for at least 8 hours. Symptoms in
cluded lower back or abdominal pain. Patients were taken emergently to
the surgical suite for control of their bleeding episode. The bleedin
g was occurring from a laceration of the iliac artery wall at its bifu
rcation into the external and internal iliac arteries, which appeared
to have resulted from the tip of the retained sheath. All patients had
recently received heparin or urokinase. primary repair was possible i
n three patients; another required an ileoileo bypass graft. Despite s
uccessful repair of the vessel, one patient died. Retained femoral art
ery sheaths can lead to lacerations of the iliac artery, The length of
time that sheaths are left in the artery should be minimized to preve
nt laceration of the arterial wall by the tip of the sheath.