Select number of risk factors to view results The CLUE Post-Surgery VTE Risk Instrument Calculate the risks for different types of surgery, with and without thromboprophylaxis, using the options below Interactive graphic by Will Stahl-Timmins Surgery type Venous thromboembolism (VTE) risk factors Procedure Method Age 75+ BMI 35+ kg/m² Number of risk factors 0 1 2 or priorVTE 0% 10% 5% 2.5% 7.5% 0% 10% 5% 2.5% 7.5% 0% 10% 5% 2.5% 7.5% Risk of venous thromboembolism Certainty Certainty Certainty Risk of bleeding requiring reintervention Risk of bleeding leading to transfusion 2.6 With prophylaxis 42.0 Without prophylaxis Moderate 1.9 With prophylaxis 1.4 Without prophylaxis Moderate 1.9 With prophylaxis 1.4 Without prophylaxis Moderate For bariatric surgery, there is no low VTE risk group, as all patients have BMI of 35 or more and are therefore categorized to medium or high VTE risk group. * With lymphadenectomy performed laparoscopically * With lymphadenectomy * In non-Asian countries * PLND = pelvic lymph node dissection * Including radical and non-radical vulvectomies
Read the full guidance Validation study: The CLUE Post-Surgery VTE Risk Instrument Blood Advances 1 Systematic review: general abdominal, colorectal, upper GI, and HPB surgery Annals of Surgery American Journal of Obstetrics and Gynecology American Journal of Obstetrics and Gynecology European Urology European Urology 2 Link to article Link to article Link to article Link to article Link to article Link to article Systematic review: gynecologic cancer surgery 3 Systematic review: gynecologic noncancer surgery 4 Systematic review: urological cancer surgery 5 Systematic review: urological noncancer surgery 6 Download PDF infographics Risk of thrombosisand bleeding inGeneral abdominal surgery Risk of thrombosisand bleeding inColorectal surgery Risk of thrombosisand bleeding inUpper GI andhepatopancreatobiliary surgery Risk of thrombosisand bleeding inGynecologic cancer surgery Risk of thrombosisand bleeding inGynecologic non-cancer surgery Risk of thrombosisand bleeding inUrologicalsurgery