D&C Formulas

Question 1

Converting from Fahrenheit to Celsius

Answer 1

C = F - 32 / 1.8

Question 2

Converting from Celsius to Fahrenheit

Answer 2

F = 1.8 C + 32

Question 3

What is are the 3 step approach to D&C?

Answer 3

1. Convert- All units in same system of measurement
2. Think- What is reasonable amount of drug?
3. Calculate- Apply formula

Question 4

Mass to Mass Formula

Answer 4

D = Desired
H = Have
Q = Quantity 
X = Amount
D / H x Q = X

Question 5

Mass/Liquid for Liquid Questions

Answer 5

Y = Liquid Required

D / H x Volume/Have = Y

Question 6

Define Reconstitution

Answer 6

The process of mixing and diluting solutions

Question 7

Define Solute

Answer 7

A substance to be dissolved or diluted

Question 8

Define Solvent

Answer 8

A substance (Liquid) that dissolves another substance to prepare a solutions; Diluent

Question 9

Define Solution

Answer 9

The resulting mixture of a solvent and solute

Question 10

Amount in IV Fluid Formula

Answer 10

Concentration % / 100 x Volume (mL)

Question 11

IV mL Flow Rate Formula: mL/hr

Answer 11

Volume (mL) / Time (hr) = Y (Flow Rate mL/hr)
If the Infusion Time is < 1 hr:
Volume (mL) / Time (min) x 60 min/hr = mL/hr

Question 12

IV Drop Rate Formula: gtt/min

Answer 12

Volume (mL) / Time (min) x Drop Factor (gtt/mL) = Y Rate (gtt/min)

Question 13

Dosage by wt. Formula

Answer 13

Weight (kg) x Dosage/kg = Y (Required Dosage)

Question 14

IV Flow Rate mL/hr Formula

Answer 14

Desire/hr / Have x Volume (mL) = Y (Flow Rate mL/hr)

Question 15

What is the Drop Factor Short Cut?

Answer 15

DO NOT USE IF TIME < 1 hr! 
10 gtt/mL = 60 / 10 = 60
15 gtt/mL = 60 / 15 = 4
20 gtt/mL = 60 / 20 = 3
60 gtt/mL = 60 / 60 = 1

Question 16

Adjusting IV Flow Rates/Recalculating mL/hr:

Answer 16

Remaining Volume / Remaining hr = Recalculated mL/hr
Volume / Time x gtt/mL = gtt/min
Adjusted Rate - Desired Rate / Desired Rate = % Variation

Question 17

Calculating IV Infusion Time Formula:

Answer 17

Total mL / mL/hr = Total hr.

Question 18

Calculating IV Infusion Volume Formula:

Answer 18

Total hr x mL/hr = Total mL

Question 19

Calculating Daily Volume for Pediatric Maintenance Fluids:

Answer 19

100 mL/kg/day for 1st 10 kg
50 mL/kg/day for next 10 kg
20 mL/kg/day/kg >20 kg

Question 20

Calculating the Dosage Units of Heparin Bolus on pt wt.

Answer 20

Units/kg x kg = Units
Calculate volume (mL) of bolus: D / H x Q = X

Question 21

Calculating Initial Continuous Flow Rate of IV Heparin Solution (mL/hr)

Answer 21

Units/kg/hr x kg = Units/hr

Desired (Units/hr Desired) / Have (Units) x Q (mL available) = R (mL/hr Rate)