Math & conversions Flashcards

1
Q

1 cc =

A

1 ml
cc stands for cubic centimeter

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2
Q

1 foot =

A

0.3048 m

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3
Q

ml to (imperial) pint conversion, approximated

A

500 milliliters (mL) = approx 1 pint

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4
Q

1 qt = (oz)

A

32 oz

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5
Q

1 cup =

A

~250 ml
8 oz

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6
Q

oz= (mls and tsp)

A

29.57 mL
2 tb nsp

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7
Q

1 ml of H2O weighs

A

1 g

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8
Q

Percent solutions weight

A

Xg/100mL (ie 1% is 1g/100mL, 10% is 10g/100mL)

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9
Q

Percent solutions volume

A

XmL/100mL (ie 2% is 2mL/100mL)

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10
Q

gtt=

A

Drops

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11
Q

mcgtt

A

microdrops

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12
Q

Body Surface Are dosing full formula

A

Dose = square root [(Height (cm) x Weight (kg)) / 3600]

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13
Q

Rounding with syringes

A
  • Amounts less than 1 mL are rounded to nearest hundredth
  • decimal places. Amounts more than 1 mL are rounded to tenth
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14
Q

miles to km

A

1.6miles

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15
Q

Drip rate calculation

A

Total volume x drip factor ÷ time = flow rate (gtt/min)

mnemonic- “TV will make you deaf over time,” which is:

TV – total volume
Deaf = DF or drip factor
Over = divided by (or over)
Time = time prescribed by the physician

ie- 3ml/1 minute x 10gtt/3ml = 30gtt/3min = 10gtt/1min

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16
Q

Drip rate shortcuts

A

For 10 gtt/ml sets, divide flow rate by 6.
For 15 gtt/ml sets, divide flow rate by 4.
For 20 gtt/ml sets, divide flow rate by 3.

17
Q

Desired dosage Formula

A

D/H x Q = X
X is Desired dose (ml)
D is ordered Dose amount
H is Amount on Hand
Quantity.

For example, a provider requests lorazepam 4 Mg IV Push for a patient in severe alcohol withdrawal. The clinician has 2 1mg/1mL vials on hand. How many milliliters should he or she draw up in a syringe to deliver the desired dose?

X= Dose ordered (4 mg) x Quantity (1 mL)/Have (2 mg) = Amount wanted to give (2 mL)

https://www.ncbi.nlm.nih.gov/books/NBK493162/

18
Q

BSA using constants

A

BSA (in m2) = k × BW2/3
K = 0.101 in dogs or 0.1 in cats X kgs or
bw = body weight

19
Q

Find a dilution formular

A

V1 × C1 = V2 × C2
V1C1 is what you have on hand

20
Q

microgram

A

written as ug (u has a tail for first part
1 ug =0.000001 g

21
Q

Dosage calculations

A

Animal body weigh X mass of drug/dosage = dose

22
Q

Determine the amount of solute needed to make a desired amount of solution

A

% x desired volume/100

23
Q

1 Tbsp = ___ tsp

A

3 tsp

24
Q

1 ltr converted to imperial

A

approx 1 qt
(946.4 mL

25
Q

500 mL =

A

1 pt (473 mL)
= 2 cups (equivalent to 1 lb of water)

26
Q

1 gallon = __ pints?

A

8

27
Q

1 mL = (Drops)

A

20 gtt

28
Q

grain =

A

65 mg

29
Q

The next formula can be used to adjust the dosage (mcg/kg/min) in accordance with the response of the animal.

A

M = DWV/R16.67

M = number of milligrams of drug to add to delivery fluid
D = dosage of drug in micrograms per kilogram per minute
W = patient body weight in kilograms
V = volume in milliliters of delivery fluid
R = rate of delivery in milliliters per hour
16.67 = conversion factor

30
Q

percent change

A

change ÷ original. = percent change

31
Q

To convert a percent concentration to a ratio concentration

A

set up a ratio based on percentages

Example: Convert a 3.1% solution to a ratio concentration.
3.1/100 = 1/x
3.1x/100 =1
x =100/3.1
X = 32

32
Q

Adding dose to IV fluid formula

A

Volume=Dose/concentration

Add 20 mEq of potassium (KCl) to a bag of IV fluids containing 1 L (1000 mL). The concentration of potassium is 2 mEq/1mL.

Volume needed = 20mEq/2mEq
Volume needed = 10mEq

33
Q

Farenheit to Celsius

A

°F = (9/5 × °C) + 32

34
Q

Maintenance fluids (simple - 2 options)

A

1ml of fluid per pound of body weight per hour.
20–30 ml per pound per day.

35
Q

Fluid rate

A

daily fluid requirement and divide by 24 and give at that
rate

If the animal is experiencing shock, it needs its fluids a bit more quickly to help get it out of shock. Rapid administration for dogs is 40 ml/lb/hour and 20–30 ml/lb/hr in cats.