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- W2032167410 abstract "Critically ill trauma patients are often in negative nitrogen balance and demonstrate advanced muscle protein wasting, which is in part due to a decrease in muscle protein synthesis. Previous studies have been performed on the relationship between pH and protein metabolism. Some evidence suggests that alkalosis might enhance protein synthesis. The purpose of the present study is to determine whether protein synthesis is increased in trauma patients who have a respiratory alkalosis from hyperventilation.Trauma patients in the intensive care unit (n = 8) who were treated with hyperventilation for elevated intracranial pressures were enrolled. Muscle protein synthesis rates were determined in vivo using the flooding method with l-[(2)H(5)]phenylalanine. Measurements were performed twice on each patient within a 36-h period, first during hyperventilation and then after hyperventilation was discontinued. Hemoglobin oxygen saturation was maintained above 95% for all measurements.Protein synthesis in muscle was 1.38 +/- 0.11%/day during hyperventilation (pH 7.50 +/- 0.02, pCO(2) 27.3 +/- 1.0 mm Hg) and 0.93 +/- 0.15%/day after respiratory parameters were normalized (pH 7.39 +/- 0.01, pCO(2) 39.4 +/- 1.5 mm Hg). The synthesis rate was significantly higher (P < 0.01, paired t test), 0.46 +/- 0.13%/day (32.6%), at the time of hyperventilation.Muscle protein synthesis is elevated during hyperventilation in critically ill patients with traumatic brain injury. We believe this preliminary study provides data that warrant confirmation in larger clinical studies. It suggests that this ventilatory therapeutic strategy may have a role in mitigating the negative nitrogen balance and muscle protein wasting that can impair the recovery of these patients." @default.
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- W2032167410 date "2000-06-01" @default.
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- W2032167410 title "Hyperventilation Increases Muscle Protein Synthesis in Critically Ill Trauma Patients" @default.
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- W2032167410 doi "https://doi.org/10.1006/jsre.2000.5911" @default.
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