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Predictors of portal vein system thrombosis after laparoscopic splenectomy and azygoportal disconnection: A Retrospective Cohort Study of 75 Consecutive Patients with 3-months follow-up.
International Journal of Surgery 2016 June
INTRODUCTION: Portal vein system thrombosis (PVST) is an alarming and potentially life-threatening complication of laparoscopic splenectomy and azygoportal disconnection (LSD). The objective of this study was to investigate negative and positive predictors of PVST after LSD in patients receiving anticoagulant regimens with aspirin or warfarin.
METHODS: Seventy-five consecutive patients who underwent LSD from 2013 to 2014 were retrospectively reviewed. Patients received anticoagulant regimen with warfarin (n = 35) or aspirin (n = 40) according to individual preference. International normalized ratio (INR) and the incidence of PSVT were compared in patients received anticoagulant regimen with warfarin or aspirin on postoperative days (POD) 7, 30, and 90, and factors associated with PVST at these time points were determined by univariate and logistic multivariable regression analyses.
RESULTS: Portal vein diameter was an independent negative predictor of PVST on PODs 7, 30, and 90. Anticoagulation with warfarin was an independent positive predictor of PVST on PODs 30 and 90, and INR was an independent positive predictor of PVST on POD 90. Dynamic changes in the incidence of PVST on the day of admission and on PODs 7, 30, and 90 differed significantly between the warfarin and aspirin groups (P = 0.002). No patient experienced perioperative bleeding.
CONCLUSIONS: Portal vein diameter was an independent negative predictor, while anticoagulation therapy with warfarin and INR were independent positive predictors, of PVST after LSD. Early anticoagulation with warfarin is safe and effective for the prevention of PVST after LSD.
METHODS: Seventy-five consecutive patients who underwent LSD from 2013 to 2014 were retrospectively reviewed. Patients received anticoagulant regimen with warfarin (n = 35) or aspirin (n = 40) according to individual preference. International normalized ratio (INR) and the incidence of PSVT were compared in patients received anticoagulant regimen with warfarin or aspirin on postoperative days (POD) 7, 30, and 90, and factors associated with PVST at these time points were determined by univariate and logistic multivariable regression analyses.
RESULTS: Portal vein diameter was an independent negative predictor of PVST on PODs 7, 30, and 90. Anticoagulation with warfarin was an independent positive predictor of PVST on PODs 30 and 90, and INR was an independent positive predictor of PVST on POD 90. Dynamic changes in the incidence of PVST on the day of admission and on PODs 7, 30, and 90 differed significantly between the warfarin and aspirin groups (P = 0.002). No patient experienced perioperative bleeding.
CONCLUSIONS: Portal vein diameter was an independent negative predictor, while anticoagulation therapy with warfarin and INR were independent positive predictors, of PVST after LSD. Early anticoagulation with warfarin is safe and effective for the prevention of PVST after LSD.
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