Initial Experience with Endovascular Repair for Type B Aortic Dissection: Insights from the First 10 Cases at a Single Center

Purpose: This study was undertaken to evaluate the single center experience of endovascular intervention for Type B aortic dissection. Methods: Data were retrospectively analysed in 10 consecutive patients over the past 2 years (2021-2022) who had an endovascular intervention in IJN for Type B Aortic dissection. Patients’ demographic, clinical and procedural data including preoperative characteristics and operative details were collected. Primary outcomes evaluated were mortality, stroke, spinal cord ischemia, vocal cord palsy and vascular access complications. Results: There were 10 patients who had Stanford Type B aortic dissection who underwent thoracic endovascular aortic repair (TEVAR). 1(10%) presented with acute aortic dissection, 6(60%) in the subacute stage and 3(30%) in the chronic stage. The majority of patients were male (90%), with a mean age of 61.5 ± 19.5years. TEVAR was performed till different zones, with no patients in Zone 0, 20% in Zone 1, 30% in Zone 2, 30% in Zone 3 and 20% in Zone 4 Aorta. While 50% of patients did not require any bypass for the neck vessels, 30% needed a single neck vessel chimney and 20% required surgical bypass. Average post operative hospital stay was 5.4 days (ranging 2-19 days). Postoperative vocal cord palsy occurred in 1 patient (10%) but no cases of vascular access injury, spinal hypoperfusion, cerebrovascular accident or mortality is reported in our study. Conclusion: Our study demonstrates that endovascular intervention with TEVAR for Type B aortic dissection in IJN resulted in favourable outcomes with low incidence of complications. However, given the small sample size, further studies with larger cohorts and longer duration of study is required to validate these findings.