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Fluid and Electrolyte Therapy

Parental Fluids. Infusion:Administration of > 100 ml fluid by parentral routeTonicityOsmotic pressure of fluid in relation to plasmaParentral fluids can beIsotonic: osmotic pressure of the fluid = OP of the plasma = 290 mOsmol/LHypertonic: OP > OP of plasma by > 50.Hypotonic: OP < OP of plasm

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Fluid and Electrolyte Therapy

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    1. Fluid and Electrolyte Therapy

    2. Parental Fluids Infusion: Administration of > 100 ml fluid by parentral route Tonicity Osmotic pressure of fluid in relation to plasma Parentral fluids can be Isotonic: osmotic pressure of the fluid = OP of the plasma = 290 mOsmol/L Hypertonic: OP > OP of plasma by > 50. Hypotonic: OP < OP of plasma at least by 50

    3. Parental Fluids The tonicity of fluid has direct effect on fluid and electrolyte when infused into circulation Hypertonic ? ? OP of plasma ?movement of water from cell to plasma ? cell dehydration esp. in brain Hypotonic solution? ? OP of plasma causing fluid to invade cells. Isotonic fluid excess ? ? ECF ? ? blood volume ? circulatory overload.

    4. Parental Fluids What’s the importance of knowing the osmolarity of infusion fluid Alert to fluid and electrolyte imbalances that may occur Hyperosmolar fluid should be infused in large vein with large blood volume to dilute fluid. Tonicity of fluid affects the rate at which it can be infused

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