2.1 General information
The clinical data of 6 consecutive patients who received surgical treatment at Shanghai Deda Hospital from September 2019 to June 2021 due to stent infection after TEVAR were retrospectively analyzed (Table 1). There were 6 males, aged (47.7±8.2) years old (range: 35-56 years old). TEVAR was performed in 2 cases due to descending aortic aneurysm and 4 cases due to Stanford B aortic dissection. Three patients exceeded the abdominal aorta below the diaphragm level during TEVAR. Two patients underwent the “chimney” technique to implant the stent in the left subclavian artery during TEVAR operation.
All patients had symptoms of recurrent fever. There were 4 cases of positive blood culture before the second operation, including 1 case of Staphylococcus epidermidis, 1 case of Staphylococcus aureus, 1 case of Pseudomonas aeruginosa, 1 case of Stenotrophomonas maltophilia; 2 cases of second time before operation The blood culture was negative. Before the operation, the patient was diagnosed with esophageal fistula through multi-slice spiral CT angiography (Figure-1a), gastroscopy (Figure-1b), and upper gastrointestinal angiography (Figure-1c).