alexa Plasma substitution with 3\% dextran-60 in orthopaedic surgery: influence on plasma colloid osmotic pressure, coagulation parameters, immunoglobulins and other plasma constituents.
Anesthesiology

Anesthesiology

Journal of Anesthesia & Clinical Research

Author(s): Bergman A, Andreen M, Blombck M

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Abstract To study the effects on plasma proteins, blood coagulation and fibrinolysis of dextran-60, given as plasma volume substitute in a 3\% solution, 57 patients were studied preoperatively and for 8 days postoperatively in conjunction with elective orthopaedic surgery. Three groups were formed according to the blood loss during the day of surgery: Group I (n = 22) less than 30\%, Group II (n = 24) 30-50\% and Group III (n = 11) greater than 50\% of the estimated blood volume. Dilution to a haemoglobin concentration of 110 g.1-1 was intended and erythrocytes transfused accordingly. No platelets were transfused. All patients received similar amounts of crystalloids. Nine patients in Group III received plasma and/or albumin solution for further volume replacement once the maximum dose of dextran (1.5 g.kg-1) was reached. Dextran-70 was given on days 1 and 3 postoperatively for thromboprophylaxis. No patient exhibited clinical signs of thrombosis or embolism. Mean postoperative bleeding times were longer than preoperatively, but still within the normal range in all groups. They were both pre- and postoperatively slightly longer in Group III, compared to the other groups, perhaps due to mild haemostatic disorders and/or undisclosed antiphlogistic therapy. Postoperative colloid osmotic pressures decreased by 11-19\% in the three groups. Dilution of plasma constituents was also seen in the postoperative fall of platelet counts and of albumin, antithrombin and Factor X levels, most marked in Group III. Albumin levels on day 8 were still only 77-83\% of preoperative values. IgG and IgM were decreased and the IgG level was still only 75\% of preoperative on day 8.(ABSTRACT TRUNCATED AT 250 WORDS)
This article was published in Acta Anaesthesiol Scand and referenced in Journal of Anesthesia & Clinical Research

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