The effects of hydroxyethyl starches of varying molecular weights on platelet function

被引:184
作者
Franz, A [1 ]
Bräunlich, P [1 ]
Gamsjäger, T [1 ]
Felfernig, M [1 ]
Gustorff, B [1 ]
Kozek-Langenecker, SA [1 ]
机构
[1] Univ Vienna, Dept Anesthesiol & Intens Care B, Sch Med, A-1090 Vienna, Austria
关键词
D O I
10.1097/00000539-200106000-00008
中图分类号
R614 [麻醉学];
学科分类号
100217 ;
摘要
We evaluated the effect of various hydroxyethyl starch (HES) solutions on platelet function. Blood was obtained before and after the IV infusion (10 mL/kg) of saline tit = 10), HES 70/0.5-0.55 (molecular weight in kD/degree of substitution; n = 10), HES 130/0.38-0.45 (n = 10), HES 200/0.6-0.66 (n = 10), or HES 450/0.7-0.8 (n = 10) in otherwise healthy patients scheduled for elective surgery. Collagen and epinephrine were used as agonists for assessment of platelet function analyzer closure times. Flow cytometry was used to assess agonist-induced expression of activated glycoprotein IIb/IIIa complex and P-selectin. infusion of HES 450/0.7-0.8, HES 200/0.6-0.66, and HES 70/0.5-0.55 prolonged closure times and reduced glycoprotein IIb/IIIa expression, whereas saline and HES 130/0.38-0.45 had no significant effect on platelet variables. P selectin expression was not affected by any solution tested. In vitro experiments demonstrated a less inhibiting Effect of HES 130/0.38-0.45 on closure times when compared with other HES solutions. This study shows that HES 450/0.7-0.8, HES 200/0.6-0.66, and HES 70/0.5-0.55 inhibit platelet function by reducing the availability of the functional receptor for fibrinogen on the platelet surface. Our data indicate that fluid resuscitation with HES 130/0.38-0.45 may reduce the risk of bleeding associated with synthetic colloids of higher molecular weight and degree of substitution.
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页码:1402 / 1407
页数:6
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