Q

0.001 0.01 0.1 Favors LMWH

* Enoxaparin ** Dalteparin

10 100 1000 Favors UFH

FIGURE 1 Frequency of HIT: UFH versus LMWH. Meta-analysis of five thromboprophylaxis studies comparing the frequency of serologically-confirmed HIT between UFH and LMWH (enoxaparin, 3 studies; dalteparin, 2 studies). Abbreviations: HIT, heparin-induced thrombocytopenia; LMWH, low molecular weight heparin; UFH, unfractionated heparin. Source: From Martel et al., 1995.

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