Blunt thoracic aortic injury (BTAI) represents a potentially life-threatening condition and thoracic endovascular aortic repair (TEVAR) is recommended as the first-line treatment (Class I level of evidence C) by the current guidelines. The aim of this systematic review was to determine the perioperative and mid-term follow-up outcomes of patients with BTAI treated with TEVAR.
Materials and Methods:
We reviewed the English literature published between 2000 and 2022, via Ovid, using MEDLINE, EMBASE, and CENTRAL databases, until July 30, 2022. Observational studies and case series, with ≥5 patients, reporting on the perioperative and follow-up outcomes of patients who underwent TEVAR for BTAI were included. The Newcastle-Ottawa Scale was used to assess the risk of bias. Primary outcomes were technical success and 30-day mortality, cerebrovascular morbidity. Secondary outcomes were mortality and re-interventions during the mid-term follow-up.
Results:
From 5201 articles identified by the literature search, 35 eligible studies were included in this review. All studies had a retrospective study design. In total, 991 patients were included. The mean age was 34.5±16.5 years (range=16–89 years). Technical success was 98.0% (odds ratio [OR], 95% confidence interval [CI]=0.98, 0.99, p<0.001, I2=0%). Mortality at 30 days was 5.0% (OR, 95% CI=0.03, 0.06, p<0.001, I2=5.56%). Spinal cord ischemia occurred in 1.0% (OR, 95% CI=0.01, 0.02, p<0.001, I2=0%) and stroke rate was 2.0% (OR, 95% CI=0.01, 0.02, p<0.001, I2=0%). The available follow-up was estimated at 29 months (range=3–119 months) with mortality rate at 2.0% (OR, 95% CI=0.01, 0.02, p<0.001, I2=0%) and re-intervention rate at 1.0% (OR, 95% CI=0.01, 0.02, p<0.001, I2=10.5%).
Conclusion:
Thoracic endovascular aortic repair showed high technical success and low early cerebrovascular morbidity and mortality rates. In the mid-term follow-up, the estimated mortality and re-intervention rates were also low. Furthermore, higher quality prospective studies are needed.
Clinical Impact
Thoracic endovascular aortic repair (TEVAR) is recommended as the first line treatement in patients with blunt thoracic aortic injuries (BTAI). This systematic review of 35 retrospective studies and 991 patients showed high technical success (98.0%) with an associated 30-day mortality at 5.0% and low spinal cord ischemia (1%) and stroke rates (2.0%). Mid-term mortality and re-intervention rates reassure the effectiveness of TEVAR in BTAI cases.
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