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Required Formulas 4

Required Formulas - Disease States & Others

TermDefinition
Pack-year Smoking History PYSH = Packs per day x Years Smoked
Friedewald Equation LDL = TC - HDL - (TG*/5) * Don't use if TG > 400
Body Surface Area BSA (m^2) = √[(Height (cm) x Weight (kg)) / 3600]
Mean Arterial Pressure MAP = [(2 x DBP) + SBP] / 3
Phenytoin Correction (Albumin < 3.5) Corrected Phenytoin = Total Phenytoin / (0.2 x Alb) + 0.1
Calcium Salts Calcium Carbonate = 40% elemental Ca Calcium Citrate = 21% elemental Ca
Aminophylline <--> Theophylline **Remember ATM** Aminophylline to Theophylline: Multiply by 0.8
Statin Potencies Pitavastatin = 2mg Rosuvastatin = 5mg Atorvastatin = 10 mg Simvastatin = 20mg Lovastatin & Pravastatin = 40mg Fluvastatin = 80mg
Loop Diuretic Potencies Bumetanide = 1mg (IV:PO = 1:1) Torsemide = 20mg (PO only) Furosemide = 40mg (IV:PO = 1:2) Ethacrynic Acid = 50mg (IV:PO = 1:1)
Levothyroxine Conversion IV: PO = 0.75:1
Steroid Potencies Betamethasone = 0.6 mg Dexamethasone = 0.75 mg Triamcinolone & Methylprednisolone = 4 mg Prednisone & Prednisolone = 5 mg Hydrocortisone = 20 mg Cortisone = 25 mg
Initial Basal-Bolus Dosing in T1DM 1. Calculate TDD of 0.5 units/kg/day using TBW 2. Divide 1/2 basal & 1/2 rapid-acting 3. Split rapid-acting among meals
Insulin to Carb Ratio: Rule of 450 for Regular Insulin 450/TDD = grams of carbs covered by 1 unit of regular insulin
Insulin to Carb Ratio: Rule of 500 for Rapid-Acting Insulin 500/TDD = grams of carbs covered by 1 unit of rapid-acting insulin
Correction Factor: 1,500 Rule for Regular Insulin 1,500/TDD = CF for 1 unit of regular insulin
Correction Factor: 1,800 Rule for Rapid-Acting Insulin 1,800/TDD = CF for 1 unit of rapid-acting insulin
Correction Dose Correction Dose = (blood glucose now - target blood glucose) / correction factor
Created by: skelly46
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