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Journal Article
Research Support, Non-U.S. Gov't
Hypertonic saline resuscitation: saturated salt-dextran solutions are equally effective, but induce hemolysis in dogs.
Critical Care Medicine 1990 Februrary
Hypertonic saline, or saline-dextran resuscitation is normally achieved with an Na+ load of 4.8 to 7.2 mEq/kg given in a small volume (typically 4 to 6 ml/kg NaCl 7.5%). Na+ can also be administered saturated in a smaller volume, e.g., 1 to 1.5 ml/kg NaCl 25%, with similar results. Such reduction in administered volume would be an asset in prehospital trauma management. In the present experiments, severely bled (45 ml/kg) dogs were treated with one of three NaCl/dextran-70 solutions: S1, 25% NaCl + 24% dextran (1.5 ml/kg); S2, 15% NaCl + 14.4% dextran (2.5 ml/kg); S3, 7.5% NaCl + 6% dextran (5 ml/kg). S1, S2, and S3 were pump-infused in 10 min into a peripheral vein; S1 and S2 were also given into the right atrium. S1, S2, or S3 produced a number of similar responses irrespective of the route of administration; arterial pressure, cardiac index, and base excess reverted to near control levels, plasma Na+ was raised to 155-158 mEq/L, and 5-day survival was high and comparable. Plasma volume, and total and mean red cell volumes were similarly affected in all groups; however, peripheral injections of S1 and S2 induced severe hemolysis (plasma Hgb: 53 +/- 6 and 34 +/- 4 mg/dl, respectively), while right atrial S1 and S2 caused mild hemolysis (22 +/- 3 and 14 +/- 3 mg/dl, respectively). In contrast, S3 never induced hemolysis.(ABSTRACT TRUNCATED AT 250 WORDS)
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