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  • Title: Comparison of the effects of saline and homologous plasma infusion on lung fluid balance during endotoxemia in the unanesthetized sheep.
    Author: Nylander WA, Hammon JW, Roselli RJ, Tribble JB, Brigham KL, Bender HW.
    Journal: Surgery; 1981 Aug; 90(2):221-8. PubMed ID: 7020136.
    Abstract:
    The effects of saline infusion (20 ml/kg/30 minutes) and homologous plasma infusion (20 ml/kg/30 minutes) on the lung fluid balance during increased pulmonary capillary permeability secondary to Escherichia coli endotoxin infusion (1 microgram/kg/15 minutes) were studied in unanesthetized sheep. Saline and homologous plasma infusion increased lung lymph flow by 10.6% and 10.8%, respectively. The bloodless wet-to-dry ratio was 5.1 +/- 0.2 in the saline group and 5.2 +/- 0.2 in the homologous plasma group. The saline infusion decreased the plasma oncotic pressure while the plasma infusion increased plasma oncotic pressure. However, the increase in plasma oncotic pressure was negated by concomitant changes in the lymph oncotic pressure and greater increases in pulmonary microvascular pressure during the plasma infusion. Changes in pulmonary microvascular pressure predominated over changes in the oncotic pressure gradient. Both saline and homologous plasma infusion increase fluid filtration into the interstitial space by the same magnitude. Therefore neither has a clear advantage in the treatment of pulmonary edema during increased permeability.
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