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Required Formulas 1
Required Formulas - Calculations
| Term | Definition |
|---|---|
| Volume Conversion Factors | 1 tsp = 5 mL 1 tbsp = 15 mL 1 fl oz = 30 mL 1 cup = 8 oz = 240 mL 1 pint = 16 oz = 480 mL 1 quart = 2 pints = 960 mL 1 gallon = 4 quarts = 3,840 mL |
| Weight Conversion Factors | 1 kg = 2.2 lbs 1 oz = 28.4 g 1 grain = 65 mg mEq:mmol = 1:1 & 1:0.5 for monovalent and divalent |
| Height Conversion Factors | 1 inch = 2.54 cm |
| Percentage Strength | % w/v = X g / 100 mL % v/v = X mL / 100 mL % w/w = X g / 100 g |
| Ratio Strength | % Strength = 100/ Ratio Strength Ratio Strength = 100 / % Strength |
| Parts Per Million (PPM) | PPM --> % Strength = Decimal left 4 places % Strength --> PPM = Decimal right 4 places |
| Specific Gravity | SG = weight of substance (g) / weight of equal volume of water (g) SG = g/mL |
| Dilution & Concentration | Q1 x C1 = Q2 x C2 |
| Alligation | High % - Desired % = X parts of Low % Desired % - Low % = X parts of High % |
| Osmolarity | mOsm/L = [Weight of substance (g/L) / MW (g/mole)] x # of particles x 1,000 |
| Isotonicity (E value) | E = 58.5 / (MW x 1.8) |
| Moles & Millimoles | mols = g/MW mmols = mg/MW |
| Milliequivalents | mEq = (mg x valence)/MW mEq = mmols x valence |
| Enteral Nutrition Calories | Carbs, Protein = 4 kcal/g Fat = 9 kcal/g |
| Parenteral Nutrition Calories | Dextrose Monohydrate = 3.4 kcal/g Amino Acids (Protein) = 4 kcal/g ILE 10% = 1.1 kcal/mL ILE 20% = 2 kcal/mL ILE 30% = 3 kcal/mL |
| Determining Fluid Needs | When weight > 20kg: 1,500 mL +20 mL/ kg (>20kg) |
| Total Energy Expenditure (TEE) | TEE = BEE x activity factor x stress factor |
| Grams of Nitrogen from Protein | Nitrogen (g) = protein intake (g)/6.25 |
| Corrected Calcium (Alb < 3.5) | Corrected Ca = Calcium + [(4-Albumin) x 0.8] |
| Body Mass Index (BMI) | BMI = weight (kg)/ [height (m)] ^2 BMI = (weight (lbs)/ [height (in)]^2) x 703 |
| Ideal Body Weight & Adjusted Body Weight | IBW (males) = 50kg + (2.3 x inches over 5 ft) IBW (females) = 45.5kg + (2.3 x inches over 5 ft) ABW = IBW + 0.4(TBW-IBW) |
| Anion Gap | AG = Na - Cl - HCO3 |
| Cockcroft-Gault Equation | CrCl (mL/min) = [(140 - age) x weight (kg)] / 72 x SCr ** Multiply by 0.85 if pt is female |
| Absolute Neutrophil Count | ANC = WBC x [(% bands + % segs)/100] |
| Temperature Conversions | C= (F-32)/1.8 F = (C x 1.8) + 32 |
Created by:
skelly46
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