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Fig. 3 | BMC Anesthesiology

Fig. 3

From: Thromboelastometry versus free-oscillation rheometry and enoxaparin versus tinzaparin: an in-vitro study comparing two viscoelastic haemostatic tests’ dose-responses to two low molecular weight heparins at the time of withdrawing epidural catheters from ten patients after major surgery

Fig. 3

Scatter plot comparing ROTEM and FOR results at corresponding doses of enoxaparin and tinzaparin in IU/mL. Results are tightly and significantly correlated but tinzaparin has a stronger anticoagulative effect than enoxaparin at any given concentration. This is due to tinzaparin having a lower anti-FXa/anti-FIIa ratio than enoxaparin: for each unit of anti-FXa activity, tinzaparin has more anti-FIIa effect than enoxaparin. Rho: Spearman’s Rho: see methods section. A brief explanation of the parameters follows: measures of clot initiation: ROTEM-CT (clot time) (a) and FOR-COT1 (b) and -COT2 (d). Measures of clot propagation: ROTEM-CFT (c). Measures of clot structure: ROTEM-MCF (e) and FOR-G’max (f)

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BMC Anesthesiology

ISSN: 1471-2253

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