Required Formulas Flashcards
(62 cards)
1
Q
1 tsp = ? mL
A
5 mL
2
Q
1 tbsp = x mL
A
15 mL
3
Q
1 fl oz = x mL
A
29.57 mL
4
Q
1 cup = x oz
A
8 oz
5
Q
1 cup = x mL
A
240 mL (actual 236.56 mL)
6
Q
1 pint = x oz
A
16 oz (2 cups)
7
Q
1 pint = x mL
A
480 mL (actual 473 mL)
8
Q
1 quart = x pint
A
2 pint (4 cup)
9
Q
1 quart = x mL
A
960 mL (actual 946 mL)
10
Q
1 gallon = x quart
A
4 quart (16 cups)
11
Q
1 gallon = x mL
A
3850 mL (3785 mL actual)
12
Q
1 kg = x lbs
A
2.2 lbs
13
Q
1 oz = x g
A
28.4 g
14
Q
1 lb = x g
A
454 gi
15
Q
1 grain = x mg
A
65 mg (64.8 mg actual)
16
Q
1 inch = x cm
A
2.54 cm
17
Q
Convert PPM to percentage strength
A
Move decimal left four places
18
Q
Convert percentage strength to PPM
A
Move the decimal right four places
19
Q
IBW calculation for males
A
50 kg + 2.3*inches over 5 feet
20
Q
IBW calculation for females
A
45.5 kg + 2.3*inches over 5 feet
21
Q
Adjusted body weight equation
A
IBW+ 0.4(TBW-IBW) [I.e. for each 1 kg that actual body weight exceed ideal body weight, it contributes 0.4 kg to the adjusted body weight]
22
Q
Cockcroft-Gault Equation
A
(140-age)/[72*SCr] Times weight in kg (x0.85 if female)
23
Q
Kcal from Dextrose monohydrate?
A
3.5 kcal/gram
24
Q
Kcal from amino acid solutions?
A
4 kcal/gram
25
Kcal from IV fat emulsion 10%?
1.1 kcal/mL
26
Kcal from IV fat emulsion 20%?
2 kcal/mL
27
Kcal from IV fat emulsion 30%?
3 kcal/mL
28
Determining fluid needs for weight >20 kg?
1500 mL + (20 mL*[weight in kg-20]) (E.g. for each kg over 20, patient needs 20 mL of fluid in addition to 1500 mL)
also estimate using 30-40 ml/kg/day
29
Equation for total energy expenditure
TEE = BEE * activity factor * stress factor
30
Calculation for grams of nitrogen from protein
Nitrogen (g) = Protein intake (g)/6.25 (i.e. for each 6.25 g of protein, pt intakes 1 g of nitrogen)
31
Corrected calcium when albumin <3.5?
Calcium corrected = Reported calcium + [(4.0-albumin)*0.8] (i.e. for each 1 point that albumin is below 4, corrected calcium is 0.8 higher than what is reported).
32
Equation for anion gap?
Anion gap (AG) = Sodium - Chloride - HCO3
can also be expressed as AG = Na - (Cl + HCO3)
33
Percent ionization equation?
pH = pKa + log (Salt/acid) or pH = pKa + log (base/salt)
34
Calcium salt conversions (i.e. what is elemental calcium for calcium carbonate and calcium citrate)
1. Calcium carbonate = 40% elemental calcium
| 2. Calcium citrate = 21% elemental calcium
35
Absolute neutrophil equation
ANC = WBC * [(% segs + % bands)/100]
36
Risk equation
(# of subjects with hazard)/(Total # of subjects)
37
Relative Risk equation
(Risk in treatment group)/(Risk in control group)
38
Relative Risk Reduction Equation
(% risk in control group - % risk in treatment group)/% risk in control group
39
Absolute Risk reduction Equation
(%risk in control group - %risk in treatment group)
40
Number needed to treat equation
(1/ARR expressed as decimal)
41
IV:PO conversion Furosemide
IV:PO = 1:2
42
IV:PO conversion ethacrynic acid, torsemide, bumeatide
IV:PO = 1:1
43
List diuretic equivalent doses for loop diuretic doses, from most potent to least potent
1. bumetanide 1 mg
2. torsemide 20 mg
3. furosemide 40 mg
4. ethacrynic acid 50 mg
44
How to calculate time to burn with sunscreen
SPF * Time to Burn without sunscreen
45
What is Rule of 500 for rapid-acting insulin?
500/TDD of insulin = grams of carb covered by 1 unit of rapid-acting insulin
46
What is Rule of 450 for regular insulin?
450/TDD of insulin = grams of carb covered by 1 unit of regular insulin
47
How to calculate correction dose for insulin?
[(blood glucose now)-(target blood glucose)]/correction factor = correction dose
48
How to caclulate correction factor for regular insulin?
Rule of 1500: 1500/TDD of regular insulin = correction factor for 1 unit of regular insulin
49
How to calculate correction factor for rapid-acting insulin?
Rule of 1450: 1450/TDD of rapid-acting insulin = correction factor for 1 unit of rapid-acting insulin
50
What is Friedewald equation?
LDL = TC - HDL - (TG/5)
| *Do not use if TG > 400
51
How to correct phenytoin level for hypoalbuminemia?
Phenytoin correction = (Total phenytoin measured)/[(0.2*albumin)+0.1] (i.e. corrected phenytoin equals measured phenytoin when albumin = 4.5...)
52
How to calculate minimum weighable quantity for a scale?
MWQ = sensitivity requirement / 0.05
53
How to calculate BSA using Mosteller for Oncology
BSA = [(Ht in cm * Wt in kg)/3600]^0.5
54
How to convert from celsius to fahrenheit
F = (Celsius*1.8)+32
55
How to convert from fahrenheit to celsius
C = (Fahrenheit-32)/1.8
56
How to calculate Bioavailability
F = 100*(AUCextravascular/AUCintravenous)*(DoseIV/DoseExtravenous)
57
How to calculate Vd
(Amt of drug in body)/(Concentration of drug in plasma)
58
How to caclulate Clearance (two equations)
Cl = (F*Dose)/AUC or Ke * Vd
59
How to calculate Ke
Cl/Vd
60
How to calculate half-life
0.693/Ke
61
How to calculate Loading Dose
(Desired concentration * Vd)/Bioavailability
62
List glucocorticoid equivalent doses and list from least potent to most potent
1. Cortisone 25 mg
2. Hydrocortisone 20 mg
3. Prednisone 5 mg
4. Prednisolone 5 mg
5. Methylprednisolone 4 mg
6. Triamcinolone 4 mg
7. Dexamethasone 0.75 mg
8. Betamethasone 0.6 mg
