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RNSG 1341

Chapter 10 Fluid and Electrolytes

Total body water weight of young adult male 60%
Total body water weight of young adult female 50%
Total body water weight of older adult 45%
Adipose tissue contains ____________ water. little
Average fluid intake and output 2500ml/day
Average daily urine output 1200 - 1500 ml/day
Makes up 5% of body weight Plasma
Makes up 40% of body weight Intra-cellular fluid
Makes up 20% of body weight Extracellular fluid
Makes up 15% of body weight Interstitial/transcellular fluid
Makes up 60% of body weight Total body fluid
Minimum urine output 500 ml
Very concentrated blood high osmolality
Very dilute blood low osmolality
very concentrated urine high specific gravity
very dilute urine low specific gravity
Manifestation of dehydration decreased pulse decreased urine output cool skin no change in respiration or breath sounds
Condition that cause retention of water or sodium Administration of corticosteroids
Condition that cause retention of water or sodium Cirrhosis of liver
Condition that cause retention of water or sodium Excessive intake of sodium
Sodium level 135-145 mEq/L
Hyponatremia Serum sodium less than 135
Complications of hypotremia cellular swelling, cerebral edema, seizures, increased intracranial pressure
Early signs of hypotremia muscle cramps, weakness and fatique
Hypernatremia Serum sodium greater than 145 mEq/L
Hypernatremia causes water to be drawn out of cells causing cell shrinkage
Normal potassium level 3.5-5.3 mEq/L
Potassium helps these functions nerve impulses cardiac rhythms muscle contraction
K+ found mosly intracellular
hypokalemia low potassium
hyperkalemia high potassium
Critical hypokalemia level below 2.5
hyperkalemia Serum potassium greater than 5.3 mEq/L
hypokalemia Serum potassium lower than 3.5 mEq/L
hyperkalemia level that causes cardiac arrest greater than 8 mEq/L
Created by: pdimple