title: Early initiation of aspirin after prostate and transurethral bladder surgeries is not associated with increased incidence of postoperative bleeding: a prospective, randomized trial.
abstract: OBJECTIVE
  Lower urinary tract operations are being increasingly performed in elderly patients, in whom aspirin intake is common for preventing cardiovascular disease. We determined the safety of early aspirin re-initiation after lower urinary tract surgeries.
  
  
  METHODS
  A randomized, open label clinical trial was done. The study cohort included patients referred for transurethral prostatectomy, open prostatectomy and transurethral resection of bladder tumor while receiving aspirin prophylaxis. After controlling for surgical modality patients were randomized into 2 arms, including aspirin treatment initiation 24 hours after discontinuing of bladder irrigation (early treatment group) and aspirin treatment initiation 3 weeks after surgery (late treatment group). Primary end points were pre-discharge hematuria necessitating the restoration of bladder irrigation or the cessation of aspirin treatment and late hematuria treated in an urgent care setting, requiring hospital admission or compelling the cessation of aspirin treatment.
  
  
  RESULTS
  A total of 120 patients were enrolled, including 60 per treatment group. There were no significant differences between the groups in surgery related factors that could have affected postoperative bleeding. Primary end points were attained by 16 of the 120 patients (13.6%), including 10 of the 60 (16.7%) in the early treatment group and 6 (10%) in the late treatment group (p = 0.28). Time to catheter removal and persistent hematuria duration were similar in the 2 groups. Cardiovascular morbidity was noted in 3 of 120 patients, of whom all were assigned to the early treatment group.
  
  
  CONCLUSIONS
  Early aspirin initiation after lower urinary tract surgeries does not appear to carry an increased risk of postoperative bleeding. Thus, it may be considered in patients at high risk for cardiovascular morbidity.
authors.affiliation: Department of Urology, Rabin Medical Center, Petah Tiqwa, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel. ehrlichy@netvision.net.il
authors.forename: Y
authors.initials: Y
authors.lastname: Ehrlich
authors.forename: O
authors.initials: O
authors.lastname: Yossepowitch
authors.forename: D
authors.initials: D
authors.lastname: Margel
authors.forename: D
authors.initials: D
authors.lastname: Lask
authors.forename: P M
authors.initials: PM
authors.lastname: Livne
authors.forename: J
authors.initials: J
authors.lastname: Baniel
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001241:Aspirin / Q000008:administration & dosage / Q000009:adverse effects*; D003558:Cystoscopy; D004334:Drug Administration Schedule; D005260:Female; D005343:Fibrinolytic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D005500:Follow-Up Studies; D006417:Hematuria / Q000139:chemically induced / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010359:Patient Readmission; D011182:Postoperative Care; D019106:Postoperative Hemorrhage / Q000139:chemically induced* / Q000453:epidemiology; D011446:Prospective Studies; D011468:Prostatectomy; D011470:Prostatic Hyperplasia / Q000601:surgery*; D020728:Transurethral Resection of Prostate; D001749:Urinary Bladder Neoplasms / Q000601:surgery*
chemical_list: D005343:Fibrinolytic Agents; D001241:Aspirin