Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Aspirin decreases platelet uptake on Dacron vascular grafts in baboons

Journal Article · · Ann. Surg.; (United States)
The influence of a single dose of aspirin (5.4-7.4 mg/kg) on platelet uptake on 4-mm Dacron interposition grafts was studied in a baboon model using gamma camera scanning for 111-Indium labeled platelets. In vitro assessment of platelet function after aspirin administration revealed that in the baboon, as in the human, aspirin abolished arachidonic acid-induced platelet aggregation, prolonged the lag time between exposure to collagen and aggregation, and decreased plasma thromboxane B2 levels. Aspirin also prolonged the template bleeding time. Scans for 111-Indium labeled platelets revealed that pretreatment with a single dose of aspirin decreased platelet uptake on 4-mm Dacron carotid interposition grafts. This decrease in platelet uptake was associated with a significant improvement in 2-hour graft patency and with a trend toward improved 2-week patency.
Research Organization:
Department of Surgery, Tufts University School of Medicine, New England Medical Center, Boston, Massachusetts
OSTI ID:
6627751
Journal Information:
Ann. Surg.; (United States), Journal Name: Ann. Surg.; (United States) Vol. 200:1; ISSN ANSUA
Country of Publication:
United States
Language:
English