Mild-2.5L deficit
- mild thirst, dry mucous membranes, concentrated urine
Moderate – 4L deficit -as above with moderate thirst, reduced skin turgor(especially the arms, forehead,chest and abdomen) , tachycardia
Severe – 6L -great thirst, reduced skin turgor and decreased eyeball pressure -collapsed veins, sunken eyes, postural hypotension, oliguria