The new heparins (Aust Prescr 1996;19:104-8)

A word processing error was introduced into Table 1 after this article had left the Australian Prescriber office. The intended layout for preferred prophylaxis appears in the correct version of the table below.

Table 1

Level of risk of deep venous thrombosis/pulmonary embolism

Age <40 >=40 >=40 >=40
Surgery Minor (≤30 minute) Major (>30 minute) Major (>30 minute)
  • Lower limb arthroplasty
  • Hip fracture
Additional risk factors Nil Nil Coronary artery disease
  • Malignancy
  • Previous thrombosis
  • Thrombophilic states *
Level of risk Low Moderate High Very high
Risk rate % deep venous thrombosis 2 <20 <40 >40
fatal pulmonary embolism 0.002 <0.04 <1.0 >1.0
Preferred prophylaxis Early ambulation Low dose UFH twice daily Low dose UFH 3 times daily or LMWH Oral anticoagulant (monitored) or LMWH

* _________ Thrombophilic states include inherited disorders such as antithrombin III deficiency and acquired disorders such as anti- phospholipid antibody syndromes

UFH ______ unfractionated heparin

LMWH ____ low molecular weight heparin