2. Prepared by ABED SHAGORA In-service Education Department EGH 2011 - 2012 FLUIDS and ELECTROLYTES
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5. BODY FLUIDS Distribution of Body Fluids – 50-70% of total body weight; infant [70-80%], elderly [45-50%] ICF ECF 40% TBW 20% TBW P IS 60-kg man TBW = 0.6 x 60 kg = 36 L ICF = 0.4 x 60 kg = 24 L ECF = 12 L 3L 9L
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7. FLUID EXCHANGE BETWEEN BODY FLUID COMPARTMENTS Osmotic Pressure Gradient Oncotic P (Colloid osmotic P) Capillary P (Hydrostatic P) ICF ECF P ISF
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15. Volume Disorders 2° Alteration in Sodium Balance Expansion Isotonic Inc N No net change Isotonic fluid ingestion Hypertonic Inc Dec ICF ECF Sea water ingestion Hypotonic Inc Inc ECF ICF Hypotonic IVF Contraction Isotonic Dec N No net change Diarrhea Hypertonic Dec Dec ICF ECF Diabetes insipidus Hypotonic Dec Inc ECF ICF Addison’s disease Volume ECF ICF Water Conditions Disorder Vol. Vol. Shift