Anticoagulation

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Adverse effects

Patients aged 80 years or more may be especially susceptible to bleeding complications with a rate of 13 bleeds per 100 person-years.[1]

Patients with cancer are more likely to have bleeding complications, especially if they have Stage III (regionally extensive) or IV (metastatic) cancer.[2] Regardless of the extent of cancer, the risk of bleeding was less than the risk of recurrent embolism and thromboembolism:


Rates of major bleeding and recurrent embolism and thromboembolism (VTE)
No cancer Cancer
Stage I or II Stage III Stage IV
Major
bleeding
Events per
100 patient-years
8.6 3.4 19.1 42.8
Hazard ratio 1 0.5 2.15 4.8
Recurrent
VTE
Events per
100 patient-years
12.8 14.5 44.1 54.1
Hazard ratio 1 1.9 5.3 4.6
Adapted from Table 3 of Prandoni et al.[2]

References

  1. Hylek EM, Evans-Molina C, Shea C, Henault LE, Regan S (2007). "Major hemorrhage and tolerability of warfarin in the first year of therapy among elderly patients with atrial fibrillation". Circulation 115 (21): 2689-96. DOI:10.1161/CIRCULATIONAHA.106.653048. PMID 17515465. Research Blogging. PMID 17515465
  2. 2.0 2.1 Prandoni P, Lensing AW, Piccioli A, et al (2002). "Recurrent venous thromboembolism and bleeding complications during anticoagulant treatment in patients with cancer and venous thrombosis". Blood 100 (10): 3484–8. DOI:10.1182/blood-2002-01-0108. PMID 12393647. Research Blogging.

See also

External links

The Seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy: Evidence-Based Guidelines