Prevention of venous thrombosis after cardiac devices implantation is an important health issue to be considered by cardiac pacing experts. This prevention is justified by the high incidence of these obstructions causing major clinical and technical complications during device upgrade, lead replacement procedures, other diagnostic or therapeutic interventions that require venous catheterization. However, the usefulness of prophylactic therapeutic strategies to prevent these complications remains unknown. This books reports the results of the first randomized clinical trial designed to assess...