Midterm Outcomes of Endovascular Repair for Stanford Type B Aortic Dissection with Aberrant Right Subclavian Artery.

Abstract

To evaluate the early and midterm outcomes of endovascular repair of Stanford type B aortic dissection (TBAD) with an aberrant right subclavian artery (ARSA). From November 2012 to July 2018, 15 patients (13 male, 2 female) who had TBAD with ARSA underwent total endovascular repair, including thoracic endovascular aortic repair (TEVAR), left subclavian artery (LSA) chimney technique, LSA fenestration technique, and double chimney technique (LSA chimney and ARSA periscope). The mean age was 55 years. Kommerell diverticulum (KD) occurred in 2 patients, which were covered by means of oversized aortic stents. All patients had preoperative imaging examinations for assessing cerebral blood flow and the dominant vertebral arteries. All procedures were completed successfully. There was no in-hospital mortality. The mean procedural time was 98 ± 40 minutes (range 50-190). The mean preoperative diameters of the maximum descending aorta, false lumen, and true lumen in the descending aorta versus postoperative were 37 ± 10 mm (range 28-67), 18 ± 9 mm (range 9-41), and 19 ± 6 mm (range 10-35) versus 34 ± 9 mm (range 25-64), 5 ± 8 mm (range 0-28), and 28 ± 5 mm (range 19-37), respectively. Right upper extremity weakness was observed in 2 patients, which recovered gradually during follow-up. Immediate type Ia endoleak was detected in 1 patient. The mean follow-up time was 33 ± 20 months. During follow-up, no ARSA steal syndrome, spinal cord ischemia, or strokes were not observed. Endovascular treatment for TBAD with ARSA was feasible and safe with a satisfactory midterm follow-up outcome.