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HematuriaPhase 4NCT02350543

Peri-operative Aspirin Continuation Versus Discontinuation

A Phase 4 study testing Aspirin in people with Hematuria and Urinary Bladder Neoplasms, run by Rabin Medical Center at 1 site in Israel.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This study evaluates the continuation (non-discontinuation) of Aspirin during TURBT. Half of participants will continue their usual low-dose Aspirin regimen during TURBT and throughout the perioperative period, while the other half will discontinue Aspirin use ten days prior to surgery (standard recommendation) and… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Hematuria, Urinary Bladder Neoplasms
What is being tested?
Aspirin
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
50 participants
Where
1 siteIsrael
Study dates
Feb 2015to Jun 2017
Phase
Phase 4
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • adults aged 18 years and older with the ability for self-consent,
  • referred for elective TURBT,
  • receiving low-dose daily Aspirin prophylaxis.

Who cannot join

  • known coagulopathy or abnormal coagulation profile (prothrombin time, partial thromboplastin time, or platelet count),
  • receiving other anti-thrombotic, anti-coagulant, or non-steroidal anti-inflammatory medication (NSAIDs),
  • pregnancy.

Trial locations and contacts

1 site in 1 country.

Israel1 site

  • Rabin Medical Center

    Petah Tikva

Other trials in Israel

About this study

Official title: Must Aspirin be Discontinued Prior to TURBT: a Prospective, Randomized, Non-inferiority Trial Comparing Peri-operative Aspirin Continuation Versus Discontinuation.

This study evaluates the continuation (non-discontinuation) of Aspirin during TURBT. Half of participants will continue their usual low-dose Aspirin regimen during TURBT and throughout the perioperative period, while the other half will discontinue Aspirin use ten days prior to surgery (standard recommendation) and restart therapy two weeks post-discharge.

Read the detailed description

Recently, the American College of Chest Physicians in their 2012 clinical guidelines on perioperative anti-thrombotic therapy associated TUR of bladder tumour (TURBT) with an increased risk of bleeding associated with anti-thrombotic therapy. Despite this, contemporary series of TURBT identify the rate of significant in-hospital postoperative bleeding at only 2-3.4%. Previous prospective work by our group demonstrated no increase in postoperative hemorrhagic complications with early initiation of Aspirin following TURBT. These findings are supported by a recent retrospective work on TURBT showing a similar complication profile between continued perioperative antiplatelet therapy and antiplatelet naive patients.

The risk associated with Aspirin withdrawal prior to surgery, including increased thrombogenicity, has been extensively studied. Following cessation of Aspirin, full platelet recovery is expected within 12-14 days, however, hemostasis may be regained with as little as 20% of normal platelet activity. Further, evidence supports a platelet rebound phenomenon in the setting of acute Aspirin withdrawal and a resultant clinical prothrombotic state, with thrombotic events peaking ten days following drug cessation. Finally, the acute stress response postoperatively is well known; one component being hypercoagulability which lasts at least seven days after major and uneventful abdominal surgery, predominantly caused by increased platelet activity.

Whereas TURBT generally carries a low overall risk of cardiac morbidity, the general requirement to discontinue Aspirin pre-operatively potentially increases certain patients' cerebrovascular or cardiac risk (eg. post-coronary stent placement). As shown above, the risk of significant post-operative hematuria is minimal, and as such, Aspirin withdrawal may be unnecessary. We will perform a prospective, randomized controlled trial to address the safety and tolerability of continued Aspirin use during TURBT.

Being tested
Aspirin
Keywords
Aspirin usage, Transurethral resection of bladder tumor (TURBT)
Medical subject headings
Hematuria, Urinary Bladder Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AspirinDrug

    Also called Acetylsalicylic acid

Study groups in NCT02350543
Study groupRoleWhat they receive
Aspirin continuationActive comparatorContinued use of Acetylsalicylic acid at prior dosage (75mg or 100mg tablet one-per-day).
Receives: Drug: Aspirin
Aspirin discontinuationNo interventionDiscontinuation of Acetylsalicylic acid ten days prior to surgery, and re-initiation two weeks after hospital discharge.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Significant hematuria (composite endpoint)

    (Composite endpoint): 1. Requiring bladder catheter drainage (after catheter removal), 2. requiring re-hospitalization, 3. requiring operative intervention (ie. cystoscopy +/- transurethral fulguration). Each sub-element within the composite endpoint will receive a binary score [0,1] to denote occurrence. Similarly, the primary endpoint is a binary measure indicating occurrence of any sub-element. Sub-elements 1-3 (re-cath, re-hospitalization, or cystoscopic intervention) may occur at any point throughout the followup period.

    Measured: Post-operative admission period until 45 days post-discharge.

Secondary outcomes (3)

  1. Time to urinary catheter removal

    Measured in post-operative days, from the time of surgery until catheter removal (typically during post-operative admission period).

    Measured: up to 45 days

  2. Withholding or withdrawal of Aspirin

    A binary measure [0,1]. In the control group (Aspirin restarted two weeks post-discharge), if Aspirin is withheld due to continued hematuria, this will constitute an event. Similarly, in either group, if Aspirin is withdrawn at any point post-operatively due to hematuria, this will constitute an event.

    Measured: up to 45 days

  3. Time to urine clearance

    Measured in postoperative days until any lingering, sporadic macrohematuria has resolved. Patients will be discharged with a Hematuria Grading Scale based on that developed by Lee et al, a VAS-like scale of hematuria intensity (redness), and will note their most intense hematuria level on a daily basis until urine clearance. It is assumed that postoperative macrohematuria will resolve by 45 days postoperatively, the duration of followup.

    Measured: up to 45 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 Jan 2015 (estimated)
  2. Study startFeb 2015
  3. Primary completionJun 2017
  4. Study completionJun 2017

Why it stopped: Insufficient recruitment.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
50 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02350543
Sponsor's protocol ID
RMC-13-0666
Status last verified
Apr 2019
First submitted
26 Jan 2015
Last updated
8 Apr 2019
Results posted
No
Data monitoring committee
No

Publications

  • Douketis JD, Spyropoulos AC, Spencer FA, Mayr M, Jaffer AK, Eckman MH, Dunn AS, Kunz R. Perioperative management of antithrombotic therapy: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines. Chest. 2012 Feb;141(2 Suppl):e326S-e350S. doi: 10.1378/chest.11-2298.

    PubMed 22315266

  • Nieder AM, Meinbach DS, Kim SS, Soloway MS. Transurethral bladder tumor resection: intraoperative and postoperative complications in a residency setting. J Urol. 2005 Dec;174(6):2307-9. doi: 10.1097/01.ju.0000181797.19395.03.

    PubMed 16280830

  • Collado A, Chechile GE, Salvador J, Vicente J. Early complications of endoscopic treatment for superficial bladder tumors. J Urol. 2000 Nov;164(5):1529-32.

    PubMed 11025697

  • De Nunzio C, Franco G, Cindolo L, Autorino R, Cicione A, Perdona S, Falsaperla M, Gacci M, Leonardo C, Damiano R, De Sio M, Tubaro A. Transuretral resection of the bladder (TURB): analysis of complications using a modified Clavien system in an Italian real life cohort. Eur J Surg Oncol. 2014 Jan;40(1):90-5. doi: 10.1016/j.ejso.2013.11.003. Epub 2013 Nov 12.

    PubMed 24284200

  • Ehrlich Y, Yossepowitch O, Margel D, Lask D, Livne PM, Baniel J. Early initiation of aspirin after prostate and transurethral bladder surgeries is not associated with increased incidence of postoperative bleeding: a prospective, randomized trial. J Urol. 2007 Aug;178(2):524-8; discussion 528. doi: 10.1016/j.juro.2007.03.134. Epub 2007 Jun 14.

    PubMed 17570430

  • Picozzi S, Marenghi C, Ricci C, Bozzini G, Casellato S, Carmignani L. Risks and complications of transurethral resection of bladder tumor among patients taking antiplatelet agents for cardiovascular disease. Surg Endosc. 2014 Jan;28(1):116-21. doi: 10.1007/s00464-013-3136-8. Epub 2013 Sep 4.

    PubMed 24002913

  • Patrignani P, Filabozzi P, Patrono C. Selective cumulative inhibition of platelet thromboxane production by low-dose aspirin in healthy subjects. J Clin Invest. 1982 Jun;69(6):1366-72. doi: 10.1172/jci110576.

    PubMed 7045161

  • Bradlow BA, Chetty N. Dosage frequency for suppression of platelet function by low dose aspirin therapy. Thromb Res. 1982 Jul 1;27(1):99-110. doi: 10.1016/0049-3848(82)90283-3.

    PubMed 7123514

  • Gerstein NS, Schulman PM, Gerstein WH, Petersen TR, Tawil I. Should more patients continue aspirin therapy perioperatively?: clinical impact of aspirin withdrawal syndrome. Ann Surg. 2012 May;255(5):811-9. doi: 10.1097/SLA.0b013e318250504e.

    PubMed 22470078

  • Biondi-Zoccai GG, Lotrionte M, Agostoni P, Abbate A, Fusaro M, Burzotta F, Testa L, Sheiban I, Sangiorgi G. A systematic review and meta-analysis on the hazards of discontinuing or not adhering to aspirin among 50,279 patients at risk for coronary artery disease. Eur Heart J. 2006 Nov;27(22):2667-74. doi: 10.1093/eurheartj/ehl334. Epub 2006 Oct 19.

    PubMed 17053008

  • Mahla E, Lang T, Vicenzi MN, Werkgartner G, Maier R, Probst C, Metzler H. Thromboelastography for monitoring prolonged hypercoagulability after major abdominal surgery. Anesth Analg. 2001 Mar;92(3):572-7. doi: 10.1097/00000539-200103000-00004.

    PubMed 11226080

  • Eagle KA, Berger PB, Calkins H, Chaitman BR, Ewy GA, Fleischmann KE, Fleisher LA, Froehlich JB, Gusberg RJ, Leppo JA, Ryan T, Schlant RC, Winters WL Jr, Gibbons RJ, Antman EM, Alpert JS, Faxon DP, Fuster V, Gregoratos G, Jacobs AK, Hiratzka LF, Russell RO, Smith SC Jr; American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1996 Guidelines on Perioperative Cardiovascular Evaluation for Noncardiac Surgery). ACC/AHA guideline update for perioperative cardiovascular evaluation for noncardiac surgery---executive summary a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1996 Guidelines on Perioperative Cardiovascular Evaluation for Noncardiac Surgery). Circulation. 2002 Mar 12;105(10):1257-67. No abstract available.

    PubMed 11889023

  • Lee JY, Chang JS, Koo KC, Lee SW, Choi YD, Cho KS. Hematuria grading scale: a new tool for gross hematuria. Urology. 2013 Aug;82(2):284-9. doi: 10.1016/j.urology.2013.04.048.

    PubMed 23896092

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Aspirin in people with Hematuria and Urinary Bladder Neoplasms, run by Rabin Medical Center at 1 site in Israel.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 8 Apr 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Israel. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was stopped early (reason given: Insufficient recruitment.). Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Significant hematuria (composite endpoint) (time frame: Post-operative admission period until 45 days post-discharge.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02350543, which also lists 13 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Apr 2019.

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