Total body water is ____ of the body weight
What is the total body water distribution between ICF and ECF?
ICF: 40% of body weight
ECF: 20% of body weight
How much of the ECF is divided into interstitial volume vs. blood volume
Interstitial: 12% of body weight
Blood: 8% of body weight
How do you assess dehydration?
tachycardia, reduced jug fill, cold extremities, tacky MM, sunken eyes
How much maintenance fluids to adult horses need? foals?
60 ml/kg/day adults
100 mg/kg/day foals
How much oral fluids can be given at one time?
4-6 L in 30-60 min
What is the shock dose for an adult horse?
usually give half the shock dose & reassess in 1 hr
5 types of crystalloid fluids
Which crystalloid fluids contain Na?
Everything but 5% dextrose
Which crystalloid fluids contain Cl?
Which crystalloid fluids contain K?
Which crystalloid fluids contain Ca?
Which crystalloid fluids contain Mg?
Which 2 crystalloid fluids are alkalinizing?
If suspect lactic acidosis, what should you do first before giving HCO3?
Rehydrate with LRS & then reassess
most will not need supplementation
How would calculate HCO3 deficit?
(24-HCO3) x Vd x body weight
Vd is usually 0.4 or 0.5
replace 1/2 in first 1-2 hrs, then reassess. Give rest if needed over next 12-24 hrs
If you going to give bicarb, what shouldn't the fluids contain?
will precipitate out together
What is hypertonic saline used for?
Expansion of intravascular volume quickly
should be followed by oral or IV isotonic fluids
How do replacement & maintenance fluids differ?
Replacement: same conc. of electrolytes as ECF
Maintenance: less Na and more Ca, Mg & K
When are colloid fluids used?
in patients with hypoalbuminemia
Which colloid will have more effect on albumin concentrations: plasma or hetastarch?
Hetastarch only increases oncotic pressure, but doesn't actually add to the albumin concentrations
What are the 2 most common acid/base abnormalities associated with GI dz?
Metabolic acidosis: lactic acidosis due to tissue hypoxia, or loss of HCO3 in feces
Metabolic alkalosis: proximal enteritis, V+