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N112 Conversions
N112 - Medication conversions & calculations
| Question | Answer |
|---|---|
| Drop | ggt |
| Teaspoon | tsp or t = 5 mL |
| Tablespoon | tbsp or T = 15 mL |
| Ounce | oz = 2 tbsp or 30 mL |
| Cup | cup = 8 oz = 240 mL |
| Pint | pt = 2 cups |
| Quart | qt = 4 cups or 2 pt |
| One kg | 1000 g or 2.2 lbs |
| One grain (gr i) | 60 mg |
| 15 grains (gr xv) | 1 g or 1000 mg |
| Converting grains (gr) to grams (g) | divide by 15 |
| Converting grams (g) to grains (gr) | multiply by 15 |
| Converting grains (gr) to milligrams (mg) | multiply by 60 gr 1/400 = ? gm 0.0025x60=0.15 mg |
| Converting milligrams (mg) to grains (gr) | divide by 60 600mg = ? gr 600/60=gr 10 |
| Converting grams (g) to milligrams (mg) | divide by 1000 |
| Converting milligrams (mg) to grams (g) | multiply by 1000 |
| Converting micrograms (mcg) to milligrams (mg) | multiply by 1000 |
| Converting milligrams (mg) to micrograms (mcg) | divide by 1000 |
| Fahrenheit to Celsius | (*F - 32) X 5/9 = *oC |
| Celsius to Fahrenheit | (*C X 5/9) + 32 = *F |
| Converting pounds (lbs) to kilograms (kg) | divide by 2.2 |
| Converting kilograms (kg) to pounds (lbs) | multiply by 2.2 |
| Formula method of finding dosage | D/H x V = X (desired / have x volume = X) desired = dose ordered, have = dose on hand, volume = solid or liquid, X = amount to be given |
| Calculating flow rate | V/T x DF = R (volume/time x drop factor = rate) volume = amount to be infused, time = time required for volume (must be in minutes), drop factor = calibration of IV tubing, rate (flow rate) in ggt/min |
| Short-cut method for drop factoring | Must be ml/hr, does not work for flow rates less than one hour = 15ggt/min = 60/15 = 4 drops per minute = 240 drops per hour |