Chapter 42 Outline.docx - Chapter 42 Fluid Electrolyte and...

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Chapter 42: Fluid, Electrolyte and Acid-Base Balance - Fluid, Electrolyte, and Acid-Base Balances within the body maintain the health and function of all body systems o Volume: Fluid Amount o Osmolality: Fluid Concentration o Electrolyte Concentration: Fluid composition o pH: degree of fluid acidity I. Location and Movement of Water and Electrolytes a) About 60% of an adult man’s body weight is water b) Women have less water content than men c) Obese people have less water in their bodies than lean people because fat contains less water than muscle d) Fluid- water that contains dissolved or suspended substances such as glucose, mineral salts, and proteins a. FLUID DISTRIBUTION i. Extracellular Fluid (ECF)- located outside of the cells 1. Intravascular Fluid - the liquid part of the blood (i.e. the plasma) 2. Interstitial Fluid - fluid located between the cells and outside of the blood vessels 3. Transcellular Fluid - fluid secreted by the epithelial cells (e.g. cerebrospinal, pleural, peritoneal, and synovial fluids) ii. Intracellular fluid (ICF)- located inside of the cells b. COMPOSITION OF BODY FLUIDS i. Electrolytes - mineral salts; a compound that separates into ions when it dissolves in water 1. Ions - charged particles a. Cations - ions that are positively charged b. Anions - ions that are negatively charged ii. Clinical Laboratories usually report electrolyte measurements in milliequivalents per liter (mEq/L) or millimoles per liter (mmol/L) 1. Millimoles per liter: the number of milligrams of the electrolyte divided by its molecular weight that are contained in a liter of fluid 2.
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  • Spring '18
  • b. Fluid Distribution

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