Transcript 05 – calculations
Calculations, Drips and Titrations 1 ml 4mg/1ml 5 ml 20mg/5ml Remember: It is better to weigh yourself in kilograms than in pounds. It does not take a nerd to know that kilograms are less (numerically) than pounds. Kilogram (kg) generally used for patient weight milligram (mg) generally used for patient weight and drug dosages microgram (mcg) generally used for drug dosages liter (L) generally used for IV solutions milliliters (ml) generally used for fluid or drug dosages 1,000 grams = 1 kilogram 1/1000 gram = 1 milligram 1/1,000,000 gram = 1 microgram 1,000 liters = 1 kiloliter 1/100 meter = 1 centimeter Drugs Drips Am I ever gonna get through this?? This way to Ron’s “give over have” method. Your medical control physician orders 3 mg of morphine sulfate for a chest pain patient. The morphine is in a Tubex prefilled cartridge, 10 mg in 1 ml dilution. How many milliliters would you give? a) b) c) d) 3mg 10mg/ml 3 ml. 0.3 ml. 0.03 ml 30 ml. 3mg 10 mg/ml 3 10ml = 0.3 ml You have been ordered to administer a repeat IV bolus dose of lidocaine at 0.75 mg/kg. The patient weighs 150 lbs. The lidocaine is packed in a 5 ml prefilled syringe that contains 100 mg of lidocaine. How many ml of the prefilled lidocaine syringe do you administer? a) b) c) d) 75mg/kg 75mgX68k 100mg/5ml 20mg/1ml 5.0 ml. 3.5 ml. 2.5 ml. 1.5 ml. 51mg 20mg/ml 51mg 20mg/ml 51 = 2.5 ml 20ml Medical control orders 5mg/kg of bretylium by IV bolus. Your patient weighs 150 lbs. The bretylium ampule reads “bretylium 500 mg in 10 ml.” How many ml of Bretylol do you administer? a) b) c) d) 5mg/kg 500mg/10ml 34mg 5mg/ml 6.8 ml. 5.5 ml. 3.0 ml. 2.6 ml. 5mg X 68 500mg/10ml 34mg 5mg/ml 34 5ml 340mg 50mg/ml = 340mg 50mg/ml 6.8 ml To administer a lidocaine drip or infusion, you have mixed 2 grams of lidocaine in 500 ml of D5W. Medical control orders a 2 mg/min infusion rate. Using a microdrip administration set (60 drops/ml), your drip rate will be: a) b) c) d) 2mg/min x 60gtts/ml 2gm/500ml 2mg/min x 60gtts/ml 4mg/ml 15 drops/min. 30 drops/min. 45 drops/min. 60 drops/min. 2mg/min x 60gtts/ml 2000mg/500ml 120gtts/min 4 = 2mg/min x 60gtts/ml 2000mg/500ml 30gtts/min That wasn’t so bad was it?