VETIVEX ® Infusion rate calculator Weight (kg) Approximate daily maintenance ml/day (60ml/kg/day < 30kg 40ml/kg/day > 30kg) Replacement volume dehydration in ml (% Dehydration) 5% 7% 10% 12% 15% Infusion rate (ml/hr) To provide maintenance requirements and replace dehydration over 24 hours Dehydration 5% Dehydration 10% Fast rate fluids for correction of hypovolaemia (“Shock doses”) Dose to be given over 15 minutes to 1 hour depende nt on severity of shock 50ml/kg (use in dogs & cats) 80ml/kg (do NOT use in cats) 1kg 2kg 3kg 4kg 5kg 10kg 15kg 20kg 25kg 30kg 35kg 40kg 50kg 60kg 60 120 180 240 300 600 900 1200 1500 1800 1400 1600 2000 2400 50 100 150 200 250 500 750 1000 1250 1500 1750 2000 2500 3000 70 140 210 280 350 700 1050 1400 1750 2100 2450 2800 3500 4200 100 200 300 400 500 1000 1500 2000 2500 3000 3500 4000 5000 6000 120 240 360 480 600 1200 1800 2400 3000 3600 4200 4800 6000 7200 150 300 450 600 750 1500 2250 3000 3750 4500 5250 6000 7500 9000 5 9 14 18 23 46 65 91 114 137 131 150 187 225 7 13 20 27 33 66 100 133 166 200 204 233 291 350 50 100 150 200 250 500 750 1000 1250 1500 1750 2000 2500 3000 80 160 240 320 400 800 1200 1600 2000 2400 2800 3200 4000 4800 Setting up an administration set 1. Prior to openi ng the protective outer bag check for leaks and damage. Make sure the fluid is clear and the date hasn’t expired. Double check it is the correct fluid to be administered. 2. Warm t he fluid bag to body temp (37°C). 3. Remo ve the out er protective sleeve from the bag by grasping the corner laps and pulling apart to release the bag (Figure 1). 4. If any medic ation is to be added to the bag: • Clean inje ctio n port with spirit. Insert needle and syringe (with medicati on) and inject into fluid (Figure 2). 5. Thoroughly mix the medication and fluid. Have giving set ready, twist and break off the giving set port on fluid bag (Figure 3). 6. Insert the spike on giving set into the fluid bag (Figure 4). 7. Allow fluid t o run throug h giving set to remove air bubbles. Squeeze chamber and half fill. Turn off control flow mechanism on giving set. 8. Vetive x fluid is now ready to be administered intravenously to the patient. 9. Infu sion ra te to be calculated as to patient’ s requirements. • Make sure any unus ed fluid is discarded. • Ve tive x is sing le use on ly . • Givi ng s ets must be changed every 24 hours. Calculating fluid requirements : Maintenance + Hydration deficit + Ongoing losses 1. Maintenance requirements: (40-60ml/kg/day) Note: this includes normal urine output (sensible loses) and insensible loses through respiration, skin, faeces. 2. Hydration deficit: Body weight (kg) x % of dehydration as a decimal = deficit in litres 3. Contempora ry (ongoing) losses: e.g. vomiting, diarrhoea, polyuria DRIP RATE ADUL T SET (20 dr ops/ml ) PAEDI ATRIC SET (60 dr ops/ ml ) (ml/hr)/3 = drops/min ml/hr = drops/min PHYSICAL FINDINGS IN DEHYDRATION PERCENT DEHYDRATION CLINICAL SIGNS <5 Not detectable 5-6 Subtle loss of skin elasticity Definite delay in return of skin to normal position 6-8 Eyes possibly sunken in orbits Possibly dry mucous membranes Tented skin stands in place 10-12 Eyes sunken in orbits Dry mucous membranes As above plus possible signs of shock 12-15 (tachycardia, cool ext remities, rapid and weak pulses, prolongation of CRT) FLUID REQUIREMENTS IN 24 HOURS (MAINTENANCE + DEHYDRATION) % OF DEHYDRATION ML / KG / DAY 5% 110 7% 130 10% 160 12% 180 15% 210 COMBINED INTERPRETATION OF PCV AND TS/TP PCV( %) TS / TP INTERP RET ATION OF PCV AND TS/ TP DEHYDRATION N or Splen ic contra ction, polyc ythaemia, DEHYDRA TION + hypop rotein aemia N Hyperglobulinaemia, anaemia + dehydration N N Nor mal , DEHYDRAT ION + ana emi a + hyp opr oteinae mia, acute haemor rhage N Ana emia (no nb lo od loss) + n or mal hyd ra ti on Anaemia + DEHYDRATION, anaemia + hypoproteinaemia Blood loss, anaemia + hypoproteinaemia, overhydration www.fluidtherapy.co.uk Courtesy of Des Hughes BVSc, MRCVS, Dip AVECC
