HERDOO2 rule to guide treatment duration for women with unprovoked venous thrombosis

Validating the HERDOO2 rule to guide treatment duration for women with unprovoked venous thrombosis: multinational prospective cohort management study – The BMJ (free)

Source: Richard Lehman’s weekly review

HERDOO2 rule stands for Hyperpigmentation, Edema, or Redness in either leg; D-dimer level ≥250 μg/L; Obesity with body mass index ≥30; or Older age, ≥65 years. The authors concluded that women with a first unprovoked VTE event and none or one of the HERDOO2 criteria have a low risk (3.0% per patient year) of recurrent VTE and can safely discontinue anticoagulants after completing short term treatment.