Daily Ards Research Analysis
Analyzed 1 papers and selected 1 impactful papers.
Summary
A multicenter registry analysis suggests thoracic branch endoprosthesis (TBE) is a non-inferior, potentially less invasive alternative to open debranching with TEVAR for blunt traumatic aortic injury requiring zone 2 coverage. Complication rates, ICU length of stay, and mortality did not differ significantly between approaches.
Research Themes
- Trauma vascular surgery
- Endovascular innovation
- Comparative effectiveness
Selected Articles
1. Thoracic Branch Endoprosthesis as Safe Alternative Therapy for Blunt Traumatic Aortic Injury Requiring Zone 2 Coverage.
Using 2017–2022 ACS-TQP registry data, this retrospective cohort compared TBE (n=61) versus TEVAR with open arch debranching (n=33) for zone 2 BTAI. Despite lower presenting GCS in the TBE group, complications, ICU length of stay, and mortality were comparable; multivariate analyses found no association between procedure type and stroke, ICU-LOS, or mortality.
Impact: This study provides comparative effectiveness evidence supporting TBE as a safe, less invasive alternative to open debranching when zone 2 coverage is required in BTAI.
Clinical Implications: For trauma and vascular teams, TBE can be considered when zone 2 seal is necessary, potentially avoiding open arch debranching while maintaining comparable safety outcomes.
Key Findings
- Among 94 eligible patients (TBE n=61; TEVAR-DB n=33), baseline demographics and injury severity (AIS, ISS) were similar.
- TBE patients had lower presenting GCS (10.8 ± 5.2) than TEVAR-DB (13.0 ± 4.1; p=0.04).
- No significant differences in complications (stroke, DVT, VAP, ARDS, SSI, unplanned return to OR) between groups.
- Multivariate analysis showed no association between procedure type and stroke, ICU length of stay, or mortality.
- Findings support non-inferiority of TBE to TEVAR-DB for zone 2 BTAI and suggest a less invasive alternative.
Methodological Strengths
- Use of a large, prospectively collected national trauma registry (ACS-TQP, 2017–2022).
- Multivariate analyses to adjust for confounding, including severity measures.
Limitations
- Retrospective observational design with potential selection bias.
- Modest sample size (n=94) relative to the overall repaired cohort, with limited long-term outcome data.
Future Directions: Prospective comparative studies or pragmatic registry-based trials should evaluate long-term branch patency, neurologic events, and functional outcomes, and define selection criteria for TBE vs debranching.
BACKGROUND: Blunt traumatic aortic injury (BTAI) involving the left subclavian artery (zone 2) poses a challenging problem. Thoracic branch endoprosthesis (TBE) with a left subclavian artery side branch has emerged as a novel tool for thoracic endovascular aortic repair (TEVAR) for injuries requiring a zone 2 seal. We hypothesized that TBE is a non-inferior method for zone 2 BTAI repair. DESIGN: Retrospective analysis of a prospectively collected data from National Trauma Data Bank. METHODS: The 2017-2022 American College of Surgeons Trauma Quality Programs Participant Use File data were abstracted. Inclusion criteria were adult patients (>16 years old) who had undergone a TBE or TEVAR with an open aortic arch debranching procedure (TEVAR-DB). Patient demographics, complications (stroke, deep venous thrombosis, ventilator associated pneumonia, acute respiratory distress syndrome, surgical site infection, and unplanned return to OR), intensive care unit length of stay (ICU-LOS), and mortality were compared. Wilcoxon signed-rank tests and linear regressions were performed. Significance was p<0.05. RESULTS: There were 3538 patients who sustained a traumatic aortic injury and underwent endovascular repair. 94 patients met inclusion criteria (TBE (n=61) and TEVAR-DB (n=33)). There was no difference in gender, age, abbreviated injury scale (AIS), or injury severity score (ISS) between the groups. The TBE group had a significantly lower GCS on presentation (TBE: 10.8 ± 5.2 vs TEVAR-DB: 13.0 ± 4.1, p=0.04). Additionally, there was no difference in complications between the groups. On multivariate analysis, a significant association was not present between procedure type and stroke rate, ICU-LOS, or mortality. CONCLUSIONS: TBE is non-inferior to TEVAR-DB for the treatment of BTAI requiring a zone 2 seal. In the appropriate patient population, it may demonstrate a less invasive treatment alternative.