eighteen patients undergoing aortobifemoral graft surgery for severe aortoiliac atherosclerotic disease received a bolus injection of 10,000 anti-xa units of either unfractionated heparin ( ufh ) or low molecular weight heparin ( lmwh ) into the distal aorta as prophylaxis against thromboembolic complications related to clamping .
C0019134
unfractionated heparin
C0019139
low molecular weight heparin