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  • Title: Factors related to thrombosis of gastric varix during balloon-occluded retrograde transvenous obliteration.
    Author: Yoshimatsu R, Yamagami T, Miura H, Hashiba M.
    Journal: Acta Radiol; 2015 May; 56(5):592-7. PubMed ID: 24812417.
    Abstract:
    BACKGROUND: Balloon-occluded retrograde transvenous obliteration (B-RTO) has become known as an effective treatment for gastric varices with a gastrorenal shunt. However, the appropriate duration to maintain inflation of the catheter balloon for sufficient thrombosis has been unknown. PURPOSE: To evaluate retrospectively the factors related to the development of thrombus in gastric varices by evaluating the necessity of the addition of a sclerosing agent on the second day in overnight B-RTO. MATERIAL AND METHODS: Sixty-five patients who underwent B-RTO for gastric varices with a gastrorenal shunt were studied. The B-RTO catheter was retained overnight in all patients. Incidence of and factors influencing the necessity of additional injections of a sclerosing agent on the second day were investigated. RESULTS: In all 65 patients (100%), B-RTO was technically successful and in 61 patients (93.8%) complete thrombosis of the gastric varices was achieved. In 46 of the 65 patients (70.8%), the sclerosing agent was added on the second day. Higher Child-Pugh score, in particular, lower serum albumin level, and higher prothrombin time-international normalized ratio (PT-INR) were significantly associated with the need for the addition of the sclerosing agent on the second day. Optimal cut-off values for the serum albumin level and PT-INR were 3.6 g/dL and 1.13, respectively. CONCLUSION: Liver function might influence the development of thrombosis of gastric varices in B-RTO. Serum albumin and PT-INR levels would provide information for deciding on the duration of retention of the B-RTO catheter to obtain sufficient therapeutic effectiveness.
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