Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Review Article
  • Published:

Therapy Insight: approaching endoscopy in anticoagulated patients

Abstract

Over the past decade, the application of anticoagulant and antiplatelet agents for various cardiovascular and hematologic conditions has become more widespread. Optimal management of these agents during the periendoscopic period requires consideration, but limited prospective data mean that guidelines have largely relied on expert opinion. Elective procedures should be delayed in patients on temporary anticoagulation therapy (e.g. those with deep vein thrombosis). For procedures considered to have a low risk of bleeding (e.g. diagnostic endoscopy and colonoscopy without polypectomy) there is no need to discontinue or adjust anticoagulation. For procedures with a higher risk of bleeding (e.g. polypectomy and biliary sphincterotomy) an individual approach is required. This approach might include stopping oral anticoagulant therapy with or without the administration of unfractionated heparin or low-molecular-weight heparin for the preprocedure and postprocedure periods, during which the patient's international normalized ratio is in the subtherapeutic range.

Key Points

  • There are limited data to guide appropriate management of anticoagulation in the periendoscopic period

  • Low-bleeding-risk procedures can be performed without adjusting anticoagulation or antiplatelet therapy

  • High-bleeding-risk procedures might require cessation of oral anticoagulant therapy with the option of heparin bridging therapy, depending on the patient's thromboembolic risk

  • Although antiplatelet therapy can be withheld for high-bleeding-risk procedures, there is insufficient evidence to indicate that bleeding risk is impacted

  • Consultation with the patient's primary care physician, hematologist or cardiologist might be necessary to develop an optimal management strategy for complex cases

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Figure 1: Approach to the anticoagulated patient during elective endoscopic procedures.

Similar content being viewed by others

References

  1. Dupont WD and Plummer WD Jr (1998) Power and sample size calculations for studies involving linear regression. Control Clin Trials 19: 589–601

    Article  CAS  Google Scholar 

  2. Eisen GM et al. (2002) Guideline on the management of anticoagulation and antiplatelet therapy for endoscopic procedures. Gastrointest Endosc 55: 775–779

    Article  Google Scholar 

  3. Zuckerman MJ et al. (2005) ASGE guideline: the management of low-molecular-weight heparin and nonaspirin antiplatelet agents for endoscopic procedures. Gastrointest Endosc 61: 189–194

    Article  Google Scholar 

  4. Thomopoulos KC et al. (2005) Acute upper gastrointestinal bleeding in patients on long-term oral anticoagulation therapy: endoscopic findings, clinical management and outcome. World J Gastroenterol 11: 1365–1368

    Article  Google Scholar 

  5. Choudari CP et al. (1994) Acute gastrointestinal haemorrhage in anticoagulated patients: diagnoses and response to endoscopic treatment. Gut 35: 464–466

    Article  CAS  Google Scholar 

  6. Kuwada SK et al. (1996) The risk of withdrawing chronic anticoagulation because of acute GI bleeding. Am J Gastroenterol 91: 1116–1119

    CAS  Google Scholar 

  7. Kearon C and Hirsh J (1997) Management of anticoagulation before and after elective surgery. N Engl J Med 336: 1506–1511

    Article  CAS  Google Scholar 

  8. Cannegieter SC et al. (1994) Thromboembolic and bleeding complications in patients with mechanical heart valve prostheses. Circulation 89: 635–641

    Article  CAS  Google Scholar 

  9. Stein PD et al. (2001) Antithrombotic therapy in patients with mechanical and biological prosthetic heart valves. Chest 119 (Suppl 1): S220–S227

    Article  Google Scholar 

  10. Gage BF et al. (2001) Validation of clinical classification schemes for predicting stroke: results from the National Registry of Atrial Fibrillation. JAMA 285: 2864–2870

    Article  CAS  Google Scholar 

  11. Singer DE et al. (2004) Antithrombotic therapy in atrial fibrillation: the Seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy. Chest. 126 (Suppl 3): S429–S456

    Article  Google Scholar 

  12. Ridker PM et al. (2003) Long-term, low-intensity warfarin therapy for the prevention of recurrent venous thromboembolism. N Engl J Med 348: 1425–1434

    Article  CAS  Google Scholar 

  13. Palareti G and Legnani C (1996) Warfarin withdrawal. Pharmacokinetic-pharmacodynamic considerations. Clin Pharmacokinet 30: 300–313

    Article  CAS  Google Scholar 

  14. Hutten BA and Prins MH . (2000) Duration of treatment with vitamin K antagonists in symptomatic venous thromboembolism. The Cochrane Database of Systematic Reviews, Issue 3, Art. No CD001367

    Google Scholar 

  15. Jaffer AK et al. (2003) When patients on warfarin need surgery. Cleve Clin J Med 70: 973–984

    Article  Google Scholar 

  16. Prandoni P et al. (1996) The long-term clinical course of acute deep venous thrombosis. Ann Intern Med 125: 1–7

    Article  CAS  Google Scholar 

  17. Anderson CS et al. (1994) Predicting survival for 1 year among different subtypes of stroke. Results from the Perth Community Stroke Study. Stroke 25: 1935–1944

    Article  CAS  Google Scholar 

  18. Petty GW et al. (2000) Ischemic stroke subtypes: a population-based study of functional outcome, survival, and recurrence. Stroke 31: 1062–1068

    Article  CAS  Google Scholar 

  19. Jorgensen HS et al. (1996) Acute stroke with atrial fibrillation. The Copenhagen Stroke Study. Stroke 27: 1765–1769

    Article  CAS  Google Scholar 

  20. Gerson LB et al. (2000) Effect and outcomes of the ASGE guidelines on the periendoscopic management of patients who take anticoagulants. Am J Gastroenterol 95: 1717–1724

    Article  CAS  Google Scholar 

  21. Blacker DJ et al. (2003) Stroke risk in anticoagulated patients with atrial fibrillation undergoing endoscopy. Neurology 61: 964–968

    Article  Google Scholar 

  22. Waye JD et al. (1996) Complications of colonoscopy and flexible sigmoidoscopy. Gastrointest Endosc Clin N Am 6: 343–377

    Article  CAS  Google Scholar 

  23. Nelson DB et al. (2002) Procedural success and complications of large-scale screening colonoscopy. Gastrointest Endosc 55: 307–314

    Article  Google Scholar 

  24. Rosen L et al. (1993) Hemorrhage following colonoscopic polypectomy. Dis Colon Rectum 36: 1126–1131

    Article  CAS  Google Scholar 

  25. Nivatvongs S (1986) Complications in colonoscopic polypectomy. An experience with 1,555 polypectomies. Dis Colon Rectum 29: 825–830

    Article  CAS  Google Scholar 

  26. Ghazi A et al. (1984) Endoscopic gastroduodenal polypectomy. Ann Surg 200: 175–180

    Article  CAS  Google Scholar 

  27. Muehldorfer SM et al. (2002) Diagnostic accuracy of forceps biopsy versus polypectomy for gastric polyps: a prospective multicentre study. Gut 50: 465–470

    Article  CAS  Google Scholar 

  28. Freeman ML et al. (1999) Complications of endoscopic biliary sphincterotomy. N Engl J Med 335: 909–919

    Article  Google Scholar 

  29. Cotton PB et al. (1991) Endoscopic sphincterotomy complications and their management: an attempt at consensus. Gastrointest Endosc 37: 383–393

    Article  CAS  Google Scholar 

  30. Schapiro GD and Edmundowicz SA (1996) Complications of percutaneous endoscopic gastrostomy. Gastrointest Endosc Clin N Am 6: 409–422

    Article  CAS  Google Scholar 

  31. Rutgeerts P et al. (1988) Palliative Nd:YAG laser therapy for cancer of the esophagus and gastroesophageal junction: impact on the quality of remaining life. Gastrointest Endosc 34: 87–90

    Article  CAS  Google Scholar 

  32. Mathus-Vliegen EM and Tytgat GN (1986) Nd:YAG laser photocoagulation in colorectal adenoma. Evaluation of its safety, usefulness, and efficacy. Gastroenterology 90: 1865–1873

    Article  CAS  Google Scholar 

  33. Affi A et al. (2001) Acute extraluminal hemorrhage associated with EUS-guided fine needle aspiration: frequency and clinical significance. Gastrointest Endosc 53: 221–225

    Article  CAS  Google Scholar 

  34. Silvis SE et al. (1976) Endoscopic complications. Results of the 1974 American Society for Gastrointestinal Endoscopy Survey. JAMA 235: 928–930

    Article  CAS  Google Scholar 

  35. Sorbi D et al. (2000) Postpolypectomy lower GI bleeding: descriptive analysis. Gastrointest Endosc 51: 690–696

    Article  CAS  Google Scholar 

  36. Smith LE (1976) Fiberoptic colonoscopy: complications of colonoscopy and polypectomy. Dis Colon Rectum 19: 407–412

    Article  CAS  Google Scholar 

  37. Hui AJ et al. (2004) Risk of colonoscopic polypectomy bleeding with anticoagulants and antiplatelet agents: analysis of 1,657 cases. Gastrointest Endosc 59: 44–48

    Article  Google Scholar 

  38. Jafri SM (2004) Periprocedural thromboprophylaxis in patients receiving chronic anticoagulation therapy. Am Heart J 147: 3–15

    Article  Google Scholar 

  39. Douketis JD et al. (2004) Low-molecular-weight heparin as bridging anticoagulation during interruption of warfarin. Arch Intern Med 164: 1319–1326

    Article  CAS  Google Scholar 

  40. Dunn AS and Turpie AG (2003) Perioperative management of patients receiving oral anticoagulants: a systematic review. Arch Intern Med 163: 901–908

    Article  Google Scholar 

  41. Shapira Y et al. (2002) Low-molecular-weight heparin for the treatment of patients with mechanical heart valves. Clin Cardiol 25: 323–327

    Article  Google Scholar 

  42. Goldstein JL et al. (2001) Low molecular weight heparin versus unfractionated heparin in the colonoscopy peri-procedure period: a cost modeling study. Am J Gastroenterol 96: 2360–2366

    Article  CAS  Google Scholar 

  43. Gerson LB et al. (2004) The management of anticoagulants in the periendoscopic period for patients with atrial fibrillation: a decision analysis. Am J Med 116: 451–459

    Article  CAS  Google Scholar 

  44. Mathew A et al. (2003) Cost-saving approach to patients on long-term anticoagulation who need endoscopy: a decision analysis. Am J Gastroenterol 98: 1766–1776

    Article  Google Scholar 

  45. Hui CK et al. (2002) Does withholding aspirin for one week reduce the risk of post-sphincterotomy bleeding? Aliment Pharmacol Ther 16: 929–936

    Article  CAS  Google Scholar 

  46. Nakajima H et al. (1997) Aspirin effects on colonic mucosal bleeding: implications for colonic biopsy and polypectomy. Dis Colon Rectum 40: 1484–1488

    Article  CAS  Google Scholar 

  47. O'Laughlin JC et al. (1981) Does aspirin prolong bleeding from gastric biopsies in man? Gastrointest Endosc 27: 1–5

    Article  CAS  Google Scholar 

  48. Yousfi M et al. (2004) Postpolypectomy lower gastrointestinal bleeding: potential role of aspirin. Am J Gastroenterol 99: 1785–1789

    Article  Google Scholar 

  49. Sharis PJ et al. (1998) The antiplatelet effects of ticlopidine and clopidogrel. Ann Intern Med 129: 394–405

    Article  CAS  Google Scholar 

  50. Fork FT et al. (2000) Gastroduodenal tolerance of 75 mg clopidogrel versus 325 mg aspirin in healthy volunteers. A gastroscopic study. Scand J Gastroenterol 35: 464–469

    Article  CAS  Google Scholar 

  51. Yusuf S et al. (2001) Effects of clopidogrel in addition to aspirin in patients with acute coronary syndromes without ST-segment elevation. N Engl J Med 345: 494–502

    Article  CAS  Google Scholar 

  52. Diener HC et al. (1996) European Stroke Prevention Study 2: dipyridamole and acetylsalicylic acid in the secondary prevention of stroke. J Neurol Sci 143: 1–13

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding authors

Correspondence to George A Makar or Gregory G Ginsberg.

Ethics declarations

Competing interests

The authors declare no competing financial interests.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Makar, G., Ginsberg, G. Therapy Insight: approaching endoscopy in anticoagulated patients. Nat Rev Gastroenterol Hepatol 3, 43–52 (2006). https://doi.org/10.1038/ncpgasthep0387

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1038/ncpgasthep0387

This article is cited by

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing