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Haemocompatibility of coronary catheters
C Mrowietz1, R Bach, U Seyfert
1Dresdner Institut für Herz- und Kreislaufforschung, Dresden.
Insights
Angiography catheters showed no thrombotic activity in a perfusion model, indicating they are safe for intravascular use. These findings suggest the catheter material is non-thrombogenic and haemocompatible.
Area of Science:
- Biomaterials Science
- Medical Device Engineering
- Hematology
Background:
- Intravascular catheter use is associated with thrombotic-thromboembolic complications.
- The impact of catheter material properties on these thrombotic events requires further investigation.
Purpose of the Study:
- To evaluate the haemocompatibility of angiography catheters.
- To assess the thrombotic potential of specific catheter materials in a controlled setting.
Main Methods:
- A perfusion model using platelet-rich plasma was employed.
- Angiography catheters were compared against non-thrombogenic (silicone) and thrombogenic (glass) controls.
- Platelet count, aggregation, activation (CD62), and thrombin generation were measured.
Main Results:
- Angiography catheters demonstrated no significant difference in thrombotic parameters compared to the non-thrombogenic control.
- Both angiography catheters and the non-thrombogenic control showed significantly lower thrombotic activity than the thrombogenic glass control.
- No significant differences were observed in platelet reactivity or thrombin generation.
Conclusions:
- The investigated angiography catheters exhibit non-thrombogenic properties.
- These catheters can be considered haemocompatible for intravascular applications based on platelet reactivity.
- Material characteristics of angiography catheters do not appear to promote thrombotic processes.
Background:
Unwanted side-effects like thrombotic-thromboembolic processes accompany the intravascular use of catheters. The influence of the physico-chemical properties of the catheter materials on these processes is not completely understood.
Methods:
The haemocompatibility of angiography-catheters (n = 10) (Super Torque Plus, CORDIS, Johnson & Johnson company) was examined in a perfusion-model filled with platelet-rich plasma and either compared to a non-thrombogenic (silicon-tube) or to a thrombogenic surface (glass). As test-parameters the number of single circulating thrombocytes, of circulating platelet-aggregates, of circulating activated thrombocytes (CD62) and the thrombin generation (thrombin antithrombin III-complexes) were evaluated.
Results:
None of the test-parameters showed differences between the non-thrombogenic control-system and the angiography-catheters. Both systems, however, differed significantly and relevantly from the system filled with the glass-beads (the thrombogenic control-systems).
Conclusion:
With respect to the platelet reactivity angiography-catheters of the examined type can therefore be regarded as non-thrombogenic or haemocompatible.