Abstract | OBJECTIVE: MATERIALS AND METHODS: RESULTS:
Dalteparin blood levels were estimated indirectly over a 12-hour period by measuring anti-Xa activity and by performing a clotting assay known as the ATHU (AHEPA Thrombosis and Hemostasis Unit) test. Maximum anti-Xa activity (ie, 0.42 +/- 0.13 IU/mL) was achieved 4 hours after administration (in 8 of 10 patients). Adequate anticoagulant activity was maintained throughout the 12-hour dosage interval in all study patients. However, at time 0 hour of the study, 36 hours after the administration of a previous dose of dalteparin, considerable anti-Xa activity (ie, 0.39 +/- 0.11 IU/mL) was measured in 6 patients. A good correlation was found between anti-Xa activity and the results of the ATHU test. CONCLUSIONS: The presence of medium/severe edema and the concurrent administration of 1 to 3 inotropic drugs appear to contribute to a decrease in the rate of elimination of dalteparin, resulting in a greater-than-expected (as a result of decreased renal function) prolongation of its pharmacologic activity. We recommend that care be taken with repeated dosing of dalteparin in intensive care unit patients taking inotropic drugs until observed results can be confirmed.
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Authors | Chara Kani, Sophia L Markantonis, Chara Nicolaou, Nina Maggina |
Journal | Journal of critical care
(J Crit Care)
Vol. 21
Issue 1
Pg. 79-84
(Mar 2006)
ISSN: 0883-9441 [Print] United States |
PMID | 16616629
(Publication Type: Journal Article)
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Chemical References |
- Anticoagulants
- Dalteparin
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Topics |
- Aged
- Anticoagulants
(administration & dosage, pharmacokinetics)
- Critical Care
- Critical Illness
- Dalteparin
(administration & dosage, pharmacokinetics)
- Female
- Humans
- Male
- Observation
- Prospective Studies
- Renal Insufficiency
(metabolism)
- Statistics, Nonparametric
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