title: Indium-111 labeled platelet deposition following transfemoral angiography.
abstract: The incidence of thromboembolitic events in patients undergoing transfemoral angiography was examined using indium-111 labeled platelets. Twenty-seven patients received approximately 300 muCi of autologous labeled platelets at least 3 hours before angiography and were scanned with a gamma camera immediately before and after angiography. All patients were free of clinically obvious complications in the 1-2 day period after angiography. Our results showed evidence of platelet deposition at 21 sites other than the puncture site in 12 (44%) patients. Most platelet deposition (54%) occurred along the region between the puncture site and the aortic bifurcation; 24% occurred at sites not traversed by the catheter. At the puncture site itself, there was substantial platelet uptake in 44% of patients. This study indicates the need for further work in determining the most suitable catheter material and in assessing the efficacy of other measures such as anticoagulant or antiplatelet therapy.
mesh_terms: D000328:Adult; D000368:Aged; D000792:Angiography / Q000009:adverse effects* / Q000379:methods; D001161:Arteriosclerosis / Q000000981:diagnostic imaging; D001792:Blood Platelets; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging; D007204:Indium; D008297:Male; D008875:Middle Aged; D011868:Radioisotopes; D011877:Radionuclide Imaging; D013923:Thromboembolism / Q000000981:diagnostic imaging / Q000209:etiology*
chemical_list: D011868:Radioisotopes; D007204:Indium