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ARTICLE |

Fluid and Electrolyte Requirements in Injury

JOHN L. JACKSON, MC
AMA Arch Surg. 1957;75(5):709-710. doi:10.1001/archsurg.1957.01280170019008.
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ABSTRACT

Normally the fluid output for the adult, including fecal loss, is about 2500 cc. or about 40 cc/kg. In the child it is 100 mg/kg., and in the infant 150 cc/kg. In the adult the body fluids make up approximately 60% to 70% of the body weight. This is divided into plasma, which contains approximately 5% of the body weight; interstitial fluid, which contains approximately 15% of the body weight, and intracellular fluid, which contains 42% of the body weight. Owing to the low proportion of water contained in fat, obese people contain a proportionately smaller percentage of body weight as fluid. In considering electrolyte levels, it is important to note the difference in composition of the intracellular and extracellular compartments. The cation sodium predominates in the extracellular fluid, whereas in the intracellular fluid potassium predominates. The predominant anions in the extracellular fluid are chloride and bicarbonate, whereas in the

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