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Published byElmer Townsend Modified over 9 years ago
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Fluid Balance
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Sources of water: - Liquids - Foods - Metabolism byproduct
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Average Adult Intake Liquids = 1600 Food = 700 Metab. = 200 ----------- 24 hour = 2500
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Average Adult Output Urine = 1500 Sweat = 500 Water vapor = 300 Feces = 200 24 hour total = 2500
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Maintaining Fluid Balance Need to be hydrated in all body areas If fluid balance is upset, problems can occur
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Fluid Volume Excess Retention of water and Na in the ECF Overhydration
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Fluid Volume Excess Causes ? –Inc. intake –Dec. u/o –Physical Disorders –Excess Na –Stress/Trauma
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Edema Symptom of many disorders Types of edema
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Fluid Volume Deficit Deficiency of fluid & electrolytes in the ECF Dehydration
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Fluid Volume Deficit Causes ? –Inadequate intake –Loss of body fluids –Prolonged fever –Inability of body to conserve water
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Assessing Fluid Balance Assess the s/s of various systems NOT JUST ONE!!
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Calculating I & O Intake: all fluids consumed IV’s tube feeds, irrigations some foods
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Clear liquid diet Water Tea Black coffee (sweeten) gingerale broth
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Full liquid diet Ice cream Milk Pudding
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Output Urine Emesis Stools (esp. if loose) Drainage from tubes
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Recording I & O Teach pt and family to save output and tray transcribe to graphic remember: 1 ounce = 30 cc
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Intravenous solutions Instilled into the pt.’s vein includes solutions of water, chemical, blood and blood products
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Purposes of IV’s Restore fluid balance Prevent fluid imbalance Replace electrolytes Provide nutrition (TPN) Administer meds
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Purposes of IV’s (cont) Establish IV access Replace blood components
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Types of IV Solutions Isotonic Hypotonic Hypertonic
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Isotonic solutions Contain equal amount of dissolved particles as normally found in plasma
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Examples of Isotonic 0.9% Sodium Chloride (Normal Saline) 5% dextrose in water (D5W) Lactated ringers (LR) D5NS (0.9% Sodium Chloride)
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Hypotonic solutions Contain less dissolved particles than normally found in plasma
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Hypotonic (cont.) Shifts F/E out of intra- vascular compartment, hydrating intra-cellular/ interstitial areas.
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Examples of hypotonic 0.45% sodium chloride (Normal Saline) or 1/2 NS D5 1/2 NS (0.45%) D5 1/3 NS (0.33%) D5 1/4 NS (0.225%)
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Hypertonic solutions Contain higher amount of dissolved particles than normally found in plasma draws F/E into intra- vascular from intracell.
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Examples of hypertonic 10% dextrose 3% sodium chloride
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Normal saline 0.9% Sodium Chloride Only solution to be used for blood or blood product transfusions!!
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Electrolytes Often added to IV’s Most common is KCL Measured in: milliequivalents mEq
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Electrolytes (cont.) Intracellular: most common is KCL Extracellular: most common is NACL
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Nursing responsibilities Know policy/procedure Check MD order and agree with it!! Check solution/additive Check rate
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Nursing responsibilities Check and document site - no erythema, edema or pain Always safeguard site!
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Blood transfusion responsibility If you suspect reaction: - stop the transfusion - open saline wide - call MD - notify blood bank
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TPN Hyperalimentation - administration of nutrients thru special IV into vein - carbos, fats, proteins
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Calculating IV Flow Rates If using infusion pump: -need to calculate and program ml or cc / hour Examples on board!!
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Calculating without a pump: Influencing rate: - size of IV catheter - height of solution - position of site
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Calculating Rates ml. of soln. X DRF hrs. to admin. 60(min/hr)
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Drop Rate Factors Macrodrip: 10, 15, 20 - most common Microdrip: 60 Will list DRF on package
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Examples 1000 cc over 8 hours with DRF of 20 1000 X 20 = 41.6 8 60 or 42 drops/min
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Can Simplify 1. Find cc/hr. 2. If DRF 20, Divide cc/hr by 3. If DRF 15, Divide cc/hr by 4 If DRF 10, Divide cc/hr by 6
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How did we simplify? 2. Took second part of equation DRF or 20 = 1 60 60 3
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Example 1000 cc over 8 hours with DRF of 20 1. 1000 = 125 cc/hr 8 2. 125 = 41.6 or 42 3 drops/min
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