title: Lower dose of hypertonic saline dextran reduces the risk of lethal rebleeding in uncontrolled hemorrhage.
abstract: To challenge whether the recommended dose of 4 mL/kg of 7.5% sodium chloride in 6% Dextran (HSD) is optimal for fluid resuscitation in uncontrolled hemorrhage, 30 anesthetized pigs were randomized to receive a 5-min intravenous infusion of either 1, 2, or 4 mL/kg of HSD beginning 10 min after inducing a 5-mm laceration in the infrarenal aorta. In addition to conventional hemodynamic monitoring, the blood loss was calculated as the difference in blood flow rates between flow probes placed proximal and distal to the injury. The results show that the bleeding stopped between 3 and 4 min after the injury and amounted to 338+/-92 mL (mean +/- SEM), which corresponds to 28.5%+/-6.6% of the estimated blood volume. After treatment with HSD was started, six rebleeding events occurred in the 1-mL group, 11 in the 2-mL group, and 16 in the 4-mL group. The amount of blood lost due to rebleeding increased significantly with the dose of HSD and was also associated with a fatal outcome. The total blood loss was 408 mL in the survivors and 630 mL in the nonsurvivors (median, P < 0.007). The mortality in the three groups was 20%, 50%, and 50%, respectively. In conclusion, infusing 4 mL/kg of HSD after uncontrolled aortic hemorrhage promoted rebleeding and increased the mortality, while a dose of 1 mL/kg appeared to be more suitable.
authors.affiliation: Department of Surgery, Karolinska Hospital, Stockholm, Sweden.
authors.forename: Louis
authors.initials: L
authors.lastname: Riddez
authors.forename: Dan
authors.initials: D
authors.lastname: Drobin
authors.forename: Fredrik
authors.initials: F
authors.lastname: Sjöstrand
authors.forename: Christer
authors.initials: C
authors.lastname: Svensén
authors.forename: Robert G
authors.initials: RG
authors.lastname: Hahn
mesh_terms: D000818:Animals; D001012:Aorta, Abdominal / Q000293:injuries*; D003911:Dextrans / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D005440:Fluid Therapy / Q000379:methods*; D006439:Hemodynamics; D006470:Hemorrhage / Q000209:etiology / Q000628:therapy*; D022125:Lacerations / Q000150:complications*; D012151:Resuscitation / Q000379:methods; D055502:Secondary Prevention; D012965:Sodium Chloride / Q000008:administration & dosage*; D015996:Survival Rate; D013552:Swine
chemical_list: D003911:Dextrans; C104375:hypertonic saline-dextran solution; D012965:Sodium Chloride