Postoperative Chylothorax After Thoracoabdominal Aortic Aneurysm Repair.

Seminars in thoracic and cardiovascular surgery(2018)

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摘要
Chylothorax is a potentially deadly complication that can occur after thoracoabdominal aortic aneurysm (TAAA) repair. We describe our contemporary experience (2005-2014) with this complication, our efforts to identify perioperative variables associated with it, and our attempts to assess treatment outcomes. We reviewed the records of 1092 consecutive patients who underwent TAAA repair between 2005 and 2014. Standard bivariate analysis was used to test for between-group differences. Eleven patients (0.9%) developed postoperative chylothorax. Nonoperative management was used in 8 of these patients (73%); 1 patient died after a lengthy hospital stay (297 days). The other 3 patients required thoracotomy with direct ligation; 1 of these patients required a second operation. Patients who developed chylothorax appeared to be similar to other patients in age, sex, extent of aneurysm, and metabolic or cardiovascular comorbidities. Patients who developed postoperative chylothorax were more likely to require drainage of a pleural effusion (P = 0.005), tracheostomy (P = 0.02), and longer stays in the intensive care unit (median, 6 [2-24] days, P < 0.001) and the hospital (median, 35 [24-88] days, P = 0.001), and these patients were more likely to develop a graft infection (n = 2, P < 0.001). The extent of TAAA repair (Crawford I-IV), reoperation, and clamping proximal to the left subclavian artery were not significantly associated with postoperative chylothorax. Chylothorax after TAAA repair can often be managed nonoperatively. Development of postoperative chylothorax may lead to significant morbidity, longer hospitalization, and increased likelihood of graft infection.
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