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Basic Fluid Therapy in Horses Jill McClure, DVM, MS Diplomate ACVIM, ABVP Educational Objectives ? To recognize clinical dehydration ? To know acceptable routes of fluid administration ? To select acceptable rates of administration ? To select appropriate fluids ? To recite ?expected? abnormalities for mon diseases Fluid therapy considerations ? volume (water) ? tonicity (osmolality) ? pH (hydrogen ion concentration) ? ion concentration (Na, Cl, K, Ca) Where is the water? ? if 500 kg body weight ? 60% is water ? ICF is 40% of . ? ECF is 20% of . ? interstitial ~ 75 l ? plasma ~ 25 l 050100150200250300350400450500Recognition of dehydration ? dry mucous membranes ? sunken eyes ? loss of skin turgor – mild 46 % 23 seconds – moderate 710% 48 seconds – severe 1112% 8 seconds ? % of body weight liters of water ?lost? = body w