METHODS: Patients who underwent thymectomy between December 2017 and January 2020 were enrolled. None of the patients received any prophylaxis perioperatively. Subjects were risk stratified into groups

 ABSTRACT

BACKGROUND: Venous thromboembolism (VTE) is a common postoperative complication. Previous studies have shown that the VTE incidence after major thoracic surgery is high. However, there have been no exclusive data after thymectomy thus far. To investigate the incidence of postoperative VTE, we conducted a single-center, prospective cohort study.

METHODS: Patients who underwent thymectomy between December 2017 and January 2020 were enrolled. None of the patients received any prophylaxis perioperatively. Subjects were risk stratified into groups of low risk (0-4), moderate risk (5-8), and high risk (≥9). Occurrence of VTE events, including deep vein thrombosis (DVT) and pulmonary embolism (PE), were identified by imaging.

RESULTS: There were 192 patients who underwent thymectomy enrolled into the study. The overall VTE incidence was 8.9%. All the patients were diagnosed with DVT, and none were diagnosed with PE. The VTE incidence was 4.6% in patients with benign thymic diseases and 14.5% with malignant diseases. The VTE incidence was 4.7% in patients undergoing thoracoscopic surgery and 22.7% undergoing median sternotomy. The VTE incidence increased with Caprini score. Scores in the low, moderate, and high risk groups were associated with a VTE incidence of 0%, 10.3% and 37.5%, respectively. In patients with thymic malignancy, the VTE incidence in the moderate and high risk groups were 8.8% and 31.8%, respectively.

CONCLUSIONS: VTE occurred frequently in patients after thymectomy without VTE prophylaxis. The median sternotomy procedure and malignant tumor may be the major risk factors for the development of VTE. Aggressive VTE screening/treatment protocols should be implemented in patents after thymectomy.

PMID:32558357 | DOI:10.1111/1759-7714.13543

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