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  • Title: Ligating the pulmonary vein at the pericardial reflection is useful for preventing thrombus formation in the pulmonary vein stump after left upper lobectomy.
    Author: Nakano T, Kaneda H, Kawaura T, Kitawaki T, Murakawa T.
    Journal: Gen Thorac Cardiovasc Surg; 2019 May; 67(5):450-456. PubMed ID: 30417221.
    Abstract:
    OBJECTIVES: Thrombus formation in the pulmonary vein stump after left upper lobectomy is supposedly a risk factor for systemic thrombosis, resulting in a critical course for the patient. The purpose of this study was to assess the efficacy of the proximal ligation method preventing thrombus formation and thrombosis comparing the two groups of patients (those who did and those who did not undergo pulmonary vein ligation). METHODS: We performed a surgical procedure to shorten the pulmonary vein stump in the left upper lobectomy. In this procedure, we first dissected the pericardium from the left upper pulmonary vein, and then we ligated the pulmonary vein at the pericardial reflection before stapling transection. RESULTS: In the group that was not treated with the proximal ligation method, thrombus formation in the pulmonary vein stump was detected in all four cases. In contrast, thrombus formation in the pulmonary vein stump was detected in one only case of the eight cases treated with the proximal ligation method, which was significantly fewer than among those not treated with the ligation method (p = 0.010). The logistic regression analysis revealed in both the univariate (p = 0.0014) and multivariate analyses (p = 0.0071) that the proximal ligation method was significantly associated with reduced thrombus formation in the pulmonary vein stump. CONCLUSIONS: Thrombus formation in the pulmonary vein stump was significantly reduced by ligating the pulmonary vein at the pericardial reflection.
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