Major
Established
Description
NSAIDs combined with apixaban significantly elevate the risk of GI and other bleeding through additive effects on hemostasis and gastric mucosal injury.
Mécanisme
Ibuprofen impairs platelet aggregation via COX-1 inhibition and causes direct gastric mucosal damage; apixaban provides anticoagulant background, transforming minor mucosal lesions into major hemorrhage.
Signification clinique
Observational studies confirm substantially higher GI bleeding rates; hospitalization and transfusion requirements increase markedly.
Prise en charge
Avoid concurrent use. Substitute acetaminophen for analgesia; if NSAID is necessary, use the lowest dose for the shortest time and add a PPI.