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Published on: July 19, 2024
Trajectory-Based Trauma Index and Pleural Infiltration Predict Pneumothorax After CT-Guided Lung Cryoablation
Michael P Brönnimann1, Christoph A Binkert2, Johannes T Heverhagen3
1Division of Interventional Radiology, Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA; Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, Rosenbühlgasse 27, 3010 Bern, Switzerland.
A new trajectory-based trauma index (TTI) helps predict pneumothorax after lung cryoablation. Higher TTI and less pleural infiltration were linked to increased pneumothorax risk.
Area of Science:
- Pulmonology
- Interventional Radiology
- Oncology
Background:
- CT-guided lung cryoablation is a minimally invasive treatment for lung malignancies.
- Pneumothorax is a common complication following lung cryoablation, necessitating further intervention.
- Predictive tools are needed to assess pneumothorax risk in patients undergoing lung cryoablation.
Purpose of the Study:
- To evaluate the association of a novel trajectory-based trauma index (TTI) with pneumothorax after CT-guided lung cryoablation.
- To assess the relationship between tumor-related pleural infiltration and pneumothorax risk.
- To identify factors influencing the occurrence of pneumothorax and the need for chest tube placement.
Main Methods:
- Retrospective analysis of 90 CT-guided lung cryoablation procedures in 69 adult patients.
- Calculation of the trajectory-based trauma index (TTI) based on cryoprobe/needle characteristics and trajectory.
- Logistic regression analysis to evaluate associations between TTI, pleural infiltration, and pneumothorax occurrence/chest tube placement.
Main Results:
- Pneumothorax occurred in 62% of procedures, with 38% requiring chest tube placement.
- Higher TTI was significantly associated with an increased odds of pneumothorax (OR, 21.87; P<.001).
- Greater tumor-related pleural infiltration was associated with lower odds of pneumothorax (OR, 0.56; P<.001) and was also linked to TTI.
Conclusions:
- The trajectory-based trauma index (TTI) is a significant predictor of pneumothorax after lung cryoablation.
- Reduced tumor-related pleural infiltration is associated with a higher risk of pneumothorax.
- These findings may aid in risk stratification and procedural planning for lung cryoablation.
