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Vtne practice questions1/9/2024 How many 10 mg tablets should be sent home with the owner, if the patient requires 0.5 mg/kg PO BID x 7 days? Answer: 14 A 20-kg patient is being sent home on famotidine to help with potential esophagitis. How much drug are you going to use? Answer: 0.63 mlsħ mcg divided by 1000 = 0.007 mg. The concentration of dexmeditomidine is 0.5 mg/ml. The dosage the veterinarian wants to use is 7 mcg/kg IV. The dog had a fracture repair 8 weeks ago and the veterinarian wants to use dexmedetomidine to sedate the dog so he is comfortable during the procedure. A 45 kg Akita has been presented to your hospital for radiographs. To be truly accurate when adding drugs to a bag like this, you should discard 32 mL of fluids from the bag prior to adding the 32 mL of fentanyl. (If the problem asks for a dose per minute, you will need to multiply the hours by 60 to convert to minutes, but since this problem asks for ug/kg/HOUR, you do not need to further convert)Ĥ) Now plug into the equation: 4 ug/40kg/10 hours= 1600 ugĥ) Now convert the ug into mg by dividing by 1,000: 1600/1,000 = 1.6 mgĦ) Calculate the quantity of fentanyl to add by now dividing the 1.6 mg by the concentration of the drug (0.05 mg/mL) : 1.6mg/0.05mg/mL = 32 mL Make sure to pay attention to this.Ģ) Calculate the number of hours an infusion will last by dividing the volume in the bag (1 Liter, or 1,000 mL) by the rate per hour: 1,000 mL/100mL/hr = 10 hours To solve this problem, break down the basic parts to make it less overwhelming:ġ) Convert pounds to kilograms- Note that in this problem the units are already in kg so no conversion is necessary. However, the VTNE may have some questions on CRI and it will benefit you to know how to do these calculations. How much fentanyl will you add to a liter of Normosol-R? Answer: 32 mLĬonstant rate infusions are not something that an entry level technician would typically perform. The fluid rate is currently set at 100 mL/hour. The concentration of fentanyl is 0.05mg/mL. The doctor asks you to start "Zoe" on a fentanyl constant rate infusion at 4 micrograms per kilogram per hour (ug/kg/hr). "Zoe", a 40 kg Labrador Retriever is recovering after a liver mass resection. This is your maintenance rate, now you must multiply that by 1.5 to get the maintenance and one half rate. 490 mls/day divided by 24 hours in a day= 20 mls/hr. 8.18 kg multiplied by 60 ml/kg/day= 490 ml/day. How many milliliters per hour will you set the fluid pump to administer? Answer: 30 mls/hrįirst you must convert pounds to kilograms dividing 18 by 2.2= 8.18 kg. The veterinarian would like you to start Lactated Ringers IV at a rate of 1.5 times maintenance. An 18 pound Cocker Spaniel has been admitted to your hospital for treatment of pancreatitis. To answer this question, the following formula should be implemented:ĥ0 ml of 50% dextrose should be added to one liter in order to make a 2.5% solution. How many milliliters of 50% dextrose should be added to one liter of 0.9% saline in order to make it a 2.5% dextrose solution? Answer: 50 ml 220mg/ 50mg/ml = 4.4 mL to be administered. If the concentration of the cefazolin is 50mg/ml, how many milliliters should be administered? Answer: 4.4 To determine how much volume of metoclopramide is needed, the following math is performed:ġ.7 mg/hr / (52 ml/hr) x (1000 ml)= 32.6 mg (Notice how the units cancel out.)ģ2.6 mg / (5 mg/ml) = 6.5 ml A 10 kg Miniature Schnauzer is to receive 22mg/kg cefazolin intravenously following a laceration repair. Since the fluid is being administered at an hourly rate, we need to figure out how much metoclopramide we are administering per hour. This is definitely a more complicated calculation question, but when broken down it is not insurmountable.Ī 20-kg patient will need 40 mg/day of metoclopramide (20 kg x 2 mg/kg/day) How many milliliters do you need to add to a 1 liter bag? Answer: 6.5 ml Metoclopramide is available as a 5 mg/ml solution. The clinician has requested that 2 mg/kg/day of metoclopramide be added to the bag. A 20-kg patient is currently receiving 52 ml/hr of Lactated Ringer's Solution. This is particularly the case with oral medications so that owners don't have to worry about trying to halve or quarter medications. Many medications are available in different concentrations to accommodate different sized patients. What size tablet should the patient be sent home with? Answer: 375 mgĪfter converting the body weight to kilograms the dose needs to be multiplied by the body weight.Ħ0 lb / (2.2 lb/kg) = 27 kg (Notice the pounds cancel out) A 60-lb patient is to go home on Clavamox after his dental cleaning.
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