Platelet turnover studies associated with left ventricular assist device (LVAD) implantation.
Calves given LVADs have been studied to determine changes in platelet turnover induced by the device and modified by time and anticoagulants. Passivation with time occurs but is surprisingly incomplete even one month later and despite coumadin, aspirin and dipyridamole. Without these drugs, enhanced platelet turnover and local thrombus formation on the device is exaggerated. Sequential platelet turnover studies may be useful to quantitate, monitor and/or predict thromboembolic events.
D000818:Animals; D001243:Assisted Circulation / Q000295:instrumentation*; D001792:Blood Platelets / Q000166:cytology / Q000502:physiology*; D002417:Cattle; D002470:Cell Survival; D005343:Fibrinolytic Agents / Q000494:pharmacology*; D006352:Heart Ventricles; D007204:Indium; D007700:Kinetics; D010974:Platelet Aggregation / Q000187:drug effects; D011868:Radioisotopes; D013923:Thromboembolism / Q000209:etiology*
D005343:Fibrinolytic Agents; D011868:Radioisotopes; D007204:Indium