Volume efficacy and reduced influence on measures of coagulation using hydroxyethyl starch 130/0.4 (6%) with an optimised in vivo molecular weight in orthopaedic surgery : a randomised, double-blind study
| Autor: | Cornelius Jungheinrich, Frank Bepperling, Wilhelm Sauermann, Norbert H Vogt |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Oncotic pressure
Male medicine.medical_specialty Urology Hemodynamics Hydroxyethyl starch Statistics Nonparametric Excretion Hydroxyethyl Starch Derivatives Von Willebrand factor Double-Blind Method In vivo medicine Confidence Intervals Humans Orthopedic Procedures Prospective Studies Blood Coagulation reproductive and urinary physiology Aged Pharmacology Blood Volume Chi-Square Distribution biology business.industry Middle Aged Molecular Weight Coagulation Anesthesia biology.protein Female biological phenomena cell phenomena and immunity Vecuronium bromide business medicine.drug |
| Zdroj: | Drugs in RD. 5(1) |
| ISSN: | 1174-5886 |
| Popis: | Background and objective: Different types of hydroxyethyl starch (HES) affect blood coagulation differently. We studied the effects of HES 130/0.4 on coagulation in major orthopaedic surgery in relation to the pharmacological parameter in vivo molecular weight. Methods: 52 patients were randomly allocated to either HES 130/0.4 (6%, mean molecular weight 130 kDa, molar substitution 0.4) or HES 200/0.5 (6%, control) in a double-blind fashion. Colloidal volume requirements for intra- and postoperative haemodynamic stabilisation were compared. Safety analyses of this pharmacological study included a comparison of coagulation factor tests, in vivo molecular weight, and HES plasma concentrations. Results: The colloidal volumes given were similar at the end of surgery (1602 ± 569 for HES 130/0.4 vs 1635 ± 567mL for HES 200/0.5), 5h later (1958 ± 467 vs 1962 ± 398mL), and up to the first postoperative day (2035 ± 446 vs 2000 ± 424mL). HES in vivo molecular weight at the end of surgery was 88 707 ± 13 938 versus 158 374 ± 33 933Da (p < 0.001) and 5h later was 86 663 ± 16 126 versus 136 299 ± 26 208Da (p < 0.001). In parallel to the lower in vivo molecular weight, factor VIII and von Willebrand factor returned to almost normal in the HES 130/0.4 group up to 5h postoperatively, but not in the control group (p < 0.05). Residual HES plasma concentrations after 24h were low in the HES 130/0.4 group (1.0 mg/mL), but higher in the control group (2.6 mg/mL). Conclusion: HES 130/0.4 and HES 200/0.5 were found to be similar with regard to volume efficacy. Sensitive coagulation parameters returned more rapidly to normal in the HES 130/0.4 group. Lower in vivo molecular weight and more rapid excretion of HES 130/0.4 are the likely explanations for the smaller influence on coagulation in this group. |
| Databáze: | OpenAIRE |
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