Thrombus formation on the balloon of heparin-bonded pulmonary artery catheters: An ultrastructural scanning electron microscope study

Objective:To investigate heparin-bonded pulmonary artery catheters with respect to thrombus formation and platelet aggregation at the balloon and the shaft using a scanning electron microscope in critically ill patients.Design:Prospective study.Settings:Critical care unit and research laboratories.P