Related Experiment Videos
Delayed thrombogenesis following radiofrequency catheter ablation
Tetsuo Sasano1, Kenzo Hirao, Kei Yano
1Cardiovascular Department, Yokohama Red Cross Hospital, Japan. sasa.cvm@tmd.ac.jp
Summary
Radiofrequency catheter ablation (RF-CA) causes thrombogenesis in two phases. The first phase occurs during the procedure, while the second delayed phase is linked to endothelial damage from RF current.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Interventional Cardiology
Background:
- Radiofrequency catheter ablation (RF-CA) is a common procedure for treating cardiac arrhythmias.
- Thrombogenesis, the formation of blood clots, is a potential complication of RF-CA.
Purpose of the Study:
- To investigate the cause and duration of thrombogenesis following RF-CA.
- To differentiate between acute and delayed thrombogenesis phases.
Main Methods:
- Measured thrombin-antithrombin III complex (TAT) levels in 43 RF-CA patients and 20 controls.
- Collected blood samples at 7 time points, from pre-procedure to 6 days post-procedure.
- Simultaneously measured hepatocyte growth factor (HGF) in the RF-CA group.
Main Results:
- Plasma TAT showed a double-peaked pattern in RF-CA patients: one peak during ablation and a second peak 3 days later.
- TAT levels at 3 days post-procedure were significantly higher in the RF-CA group compared to controls (p=0.0003).
- The early TAT peak correlated with procedure time; the late peak did not but was associated with elevated HGF.
Conclusions:
- RF-CA-induced thrombogenesis occurs in two distinct phases: an acute phase during catheterization and a delayed phase potentially due to RF current-induced endothelial damage.
- Elevated HGF levels may indicate a higher risk for the delayed thrombogenesis phase.