Increased Plasma D-Lactate is Associated with the Severity of Hemorrhagic/Traumatic Shock in Rats
| Autor: | Anna Khadem, László Szalay, Heinz Redl, Walter Fürst, Soheyl Bahrami, Wolfgang Öhlinger, F. Umar, Mohammad Jafarmadar |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Male
Resuscitation Mean arterial pressure Time Factors Blood Pressure Shock Hemorrhagic Critical Care and Intensive Care Medicine Rats Sprague-Dawley Intestinal mucosa Pressure Animals Medicine Shock Traumatic Decompensation Lactic Acid business.industry Body Weight Metabolic acidosis Hydrogen-Ion Concentration medicine.disease Rats Endotoxins Traumatic Shock Blood pressure Shock (circulatory) Anesthesia Emergency Medicine medicine.symptom business |
| Zdroj: | Shock. 20:245-250 |
| ISSN: | 1073-2322 |
| DOI: | 10.1097/00024382-200309000-00008 |
| Popis: | D-lactate is produced by indigenous bacteria in the gastrointestinal tract. Mammals do not have the enzyme systems to metabolize D-lactate rapidly. The present study was designed to determine the kinetics of circulating D-lactate levels and to examine whether the severity of shock affects circulating D-lactate levels in rats subjected to hemorrhagic/traumatic shock. Anesthetized rats underwent midline laparotomy (duration 30 min) and were bled to 30-35 mmHg mean arterial pressure (MAP). After the onset of decompensation, MAP was either increased to 40-45 mmHg immediately by administration of Ringer's solution (moderate shock) or after 40% of shed blood volume had been re-infused as Ringer's solution (severe shock). MAP was then maintained at 40-45 mmHg for 40 min by further administration of Ringer's solution (inadequate resuscitation). Subsequently, adequate resuscitation was performed for 60 min with shed blood and additional Ringer's solution. Metabolic acidosis was significantly more pronounced in severe than in moderate hemorrhagic/traumatic shock. Plasma D-lactate levels were already significantly increased at the end of severe hemorrhagic/traumatic shock and remained high during inadequate resuscitation. D-lactate levels were significantly higher after severe than after moderate shock. Endotoxin levels did not correlate with shock severity. Damage to the intestinal mucosa was more profound in severe shock than in moderate shock. Our data suggest that hemorrhagic/traumatic shock is associated with mucosal damage and increased plasma D-lactate levels. The severity of shock affects D-lactate concentrations in plasma. Plasma D-lactate may be a useful marker of intestinal injury after hemorrhagic/traumatic shock. |
| Databáze: | OpenAIRE |
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