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• W762401 abstract "Conventional resuscitation of hypovolemia due to hemorrhage has consisted of aggressive fluid administration. Recent studies have suggested that surgical control of bleeding before fluid resuscitation might improve early survival. The effects of limited resuscitation on organ function have not been assessed in these studies. We developed a model of moderate intraperitoneal hemorrhage designed to evaluate long-term end-organ function after various resuscitation protocols. Male Sprague-Dawley rats underwent ketamine anesthesia, followed by placement of femoral artery and vein lines. Intraperitoneal hemorrhage was induced by division of distal branches of the ileocolic artery and vein. After 5 minutes of bleeding, the animals were randomized to one of three resuscitation groups: Group 1 received no fluid resuscitation before surgical control of the hemorrhage; Group 2 received 0.5 mL of lactated Ringer's solution (LR) every 5 minutes for a mean arterial pressure (MAP) of less than 80 mm Hg; Group 3 received 2.0 mL of LR every 5 minutes for a MAP of less than 80 mm Hg. In all three groups, after 20 minutes, the bleeding was surgically controlled. All rats were then resuscitated with LR to a MAP of 80 mm Hg. The intravascular lines were removed, and the rats were allowed to recover from anesthesia and were returned to animal holding. On the 7th day, survivors were sacrificed, and their blood was assayed for hematocrit and serum levels of bilirubin, alanine aminotransferase, urea nitrogen, and creatinine. Kidneys, lungs, and liver were harvested for microscopic examination. Survival was lower in Group 2 than in the other groups (90%, 60%, and 100%, respectively; P = 0.04), but all deaths occurred within 3 hours of hemorrhage and were due to either hypovolemia or anesthetic complications. No histologic abnormalities were identified in the livers of the animals that survived, but pulmonary atelectasis and mild-to-moderate renal tubular necrosis were identified uniformly. No histologic differences could be discerned between the groups. Hematocrit and indices of liver and renal function were similar in all groups, and no animal developed organ dysfunction. In this model of moderate uncontrolled intraperitoneal hemorrhage, the volume of fluid resuscitation, or the absence of resuscitation, had an inconsistent effect of 7-day survival and did not influence function or histologic appearance of the liver, lungs, or kidneys 7 days after hemorrhage." @default.
• W762401 created "2016-06-24" @default.
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• W762401 date "1999-03-01" @default.
• W762401 modified "2023-09-27" @default.
• W762401 title "Initial resuscitation volume in uncontrolled hemorrhage: effects on organ function." @default.
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