Stop or Ongoing Oral Anticoagulation in Patients Undergoing Pvp (SOAP)

Inclusion Criteria: * Prostate volume \< or = 30 gr * Micturition disorders resistant to medical treatment related to HBP and/or complications related to BPH (retention, lithiasis...) * Patient candidate for photovaporization of the prostate * Patient under treatment AVK (Anti Vitamin K) for more than 3 months with an objective of INR (International Normalized Ratio) between 2 and 3 or patient under DOACs (Direct Oral Anti-coagulants) for more than 3 months * Unprotected major * Patient affiliated to a social security scheme or equivalent * Patient is willing and able to comply with all study requirements and to sign a study-specific informed consent form. Exclusion Criteria: * History of prostate cancer * Previous pelvic radiotherapy * History of stenosis of the urethra * Patient with one or more bladder polyps * Patient under antiplatelet agent other than aspirin * Allergy to heparin or history of heparin-induced thrombocytopenia * Patients under anticoagulant injectable therapy at baseline (heparin, LMWH (Low Molecular Weight Heparin), fondaparinux) * Any mechanical prosthetic heart valve * Stroke (ischemic or hemorrhagic), systemic embolism or transient ischemic attack within past 12 weeks * Venous thromboembolism (deep vein thrombosis and/or pulmonary embolism) within past 12 weeks * Major bleeding within past 6 weeks * Severe renal insufficiency (calculated creatinine clearance \< 30 mL / min) * Thrombocytopenia (platelet count \< 100 x 10\^9 / L) * Life expectancy \< 1 month * Condition that impairs compliance with trial protocol (e.g. cognitive impairment, uncontrolled psychiatric condition, geographic inaccessibility) * Contra-indication to PVP surgery or contra-indication to general anesthesia * Protected patients : majors under some form of guardianship * Patient participating in another clinical study